Topic: Screen occasionally fails to come on when booting

Once or twice when I boot the Novena, the board comes up and I can ssh to it, but the screen does not come on.  I tried turning up screen brightness over ssh and nothing happened, so that was not the problem.  Power cycling solves it.  What should I do next time it happens (if it happens again) for debugging?

Re: Screen occasionally fails to come on when booting

If the eDP chip didn't initialise properly then it should show up in dmesg.

Re: Screen occasionally fails to come on when booting

What is the specification of your power supply?
I read that the board itself can work with a lower voltage  than a display needs, so perhaps you are near the range, where it is enough for the board, but not enough for the display?
I had the problem that  my board didn´t wanted to boot most of the time, I found out that 18.2 V is too much for the board most of the time, lowering the voltage of the power supply solved the problem, now it boots every time.

Re: Screen occasionally fails to come on when booting

Sourcerer wrote:

What is the specification of your power supply?
I read that the board itself can work with a lower voltage  than a display needs, so perhaps you are near the range, where it is enough for the board, but not enough for the display?
I had the problem that  my board didn´t wanted to boot most of the time, I found out that 18.2 V is too much for the board most of the time, lowering the voltage of the power supply solved the problem, now it boots every time.

I have the laptop model, running on the power supply that came with it

Re: Screen occasionally fails to come on when booting

I just received my laptop a few days ago, its booted fine several times. Just recently, I booted up, logged in and the screen started flickering for a few seconds until I lost the image all together. Now every time I boot up, everything is on, the screen is on, but no image.

Ideas?

Re: Screen occasionally fails to come on when booting

I've recently started having issues with the screen going blank as well. What I've found is that the other VTs (Ctrl + Alt + #) will still work and display text, even if X11 isn't working. Sometimes It'll happen that X11 will start (eg, show the login screen), then flicker a bit and disappear, sometimes coming back, sometimes not.

I haven't dug into dmesg or anything to try to diagnose.

Re: Screen occasionally fails to come on when booting

That does sound like it's getting mis-synced.

I have a theory that the problem is caused by the eDP chip syncing when the LVDS line isn't stable.  The problem is that the "timings" reported by the chip all say "stable", so it's just freaking out on its own.

When it gets into this mode, it definitely seems more stable when the board is idle.  Making me think there is a subtle clock drift going on somewhere.

I'll look into it some more this week.

Re: Screen occasionally fails to come on when booting

k3nt wrote:

I just received my laptop a few days ago, its booted fine several times. Just recently, I booted up, logged in and the screen started flickering for a few seconds until I lost the image all together. Now every time I boot up, everything is on, the screen is on, but no image.

Ideas?

Hey, something similar just happened to me. I had my new novena latop set to boot in text mode, but after installing some debian updates, the next reboot resulted in a graphical boot/login. Not so bad, but after logging in, I found the xfce ui switched into German! I am in Germany and I did configure xfce with a German keyboard layout, but I promise I didn't ask for everything (including messages) to be switched into German smile. So I futzed around for a while trying to find the source of the problem, this included running several settings tools from xfce and also trying out arandr and novena-eeprom - but not consciously making any changes in these. Eventually I rebooted ... no screen sad

The fix in my case was to reboot with a hdmi monitor attached. This resulted a flickering and unstable image on the laptops own screen, but a steady image on the external hdmi (actually dvi with a convertor) monitor. Once I was logged in (with some pretty wierd screen background effects) I ran the arandr tool again. The two screens were shown as one overlaying the other, I dragged one to be beside the other, hit save / apply and behold everything was perfect. I subsequently used arandr to disable the external monitor output and my novena continues to behave normally.

Strange but true! Perhaps it was just a coincidence and the same problem will reoccur after a future reboot smile

Good luck.

Cheers,
Robb.

Re: Screen occasionally fails to come on when booting

Robb W. wrote:
k3nt wrote:

I just received my laptop a few days ago, its booted fine several times. Just recently, I booted up, logged in and the screen started flickering for a few seconds until I lost the image all together.

Hey, something similar just happened to me. I had my new novena latop set to boot in text mode, but after installing some debian updates, the next reboot resulted in a graphical boot/login.

Hey, here too, command-line mode suddenly changed back to GUI boot. I reconfigured the novena to start in text-mode and that worked for a time. I assume this was caused by some updates, but I am not sure.  (Note: I use HDMI and a TV, still no LCD mounted).
 
Booting in GUI mode (using X) with a HDMI TV connected did not work at first (TV displayed: unsupported mode), but after I unchecked the LCD in the GUI monitor tool (or the Novena eeprom GUI tool, I forgot), it suddenly started to work (XFCE picture after using startx from the commandline). However it does not start with the prefered mode I configured in xorg.conf but the mode that is in the eeprom. This is probably as intended, I just did not expect it.

Re: Screen occasionally fails to come on when booting

Seems to be getting worse for me. I've left my software basically in the default (so it boots up into some display/login manager). X starts to the point where it shows a cursor, and a white rectangle where the login box should be. At that point the screen goes blank (no backlight or anything).

Even my non-graphical consoles seem to be getting flaky, and when I booted up just now the boot text was having some issues (Tux the penguin getting shifted to the bottom of the screen somehow).

Almost makes want to try hunting for an LVDS display, even though getting the pinouts matched seems like it would be miserable.

Re: Screen occasionally fails to come on when booting

Can you try a newer kernel (https://nas.xobs.io/novena/20150429/lin … _armhf.deb) and a newer U-Boot (https://nas.xobs.io/novena/20150429/u-b … _armhf.deb)?

I'm aiming to release these packages to everyone next week, so they should be stable.  Just install them like normal packages (dpkg -i *.deb).

Re: Screen occasionally fails to come on when booting

@xobs I don't think I've had this issue since upgrading my kernel, but it hasn't been long enough for me to be sure.

Re: Screen occasionally fails to come on when booting

I also had this problem, I updated the kernel today and the problem didn't appear again. I have turn off/on 3 or 4 times...

14 (edited by dbtayl 2015-05-02 06:34:13)

Re: Screen occasionally fails to come on when booting

Still seems borked, even with the kernel update. I tried rebooting a couple (~4) times, no dice. Black screen every time. Here's my dmesg:

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 3.19.0-00268-g04e9d08 (xobs@xobs-novena-laptop) (gcc version 4.9.2 (Debian 4.9.2-10) ) #651 SMP PREEMPT Wed Apr 29 13:16:11 SGT 2015
[    0.000000] CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c5387d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
[    0.000000] Machine model: Kosagi Novena Dual/Quad
[    0.000000] cma: Reserved 256 MiB at 0xefc00000
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] On node 0 totalpages: 983039
[    0.000000] free_area_init_node: node 0, pgdat c0b3ca40, node_mem_map ed638000
[    0.000000]   Normal zone: 1710 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 194560 pages, LIFO batch:31
[    0.000000]   HighMem zone: 788479 pages, LIFO batch:31
[    0.000000] PERCPU: Embedded 11 pages/cpu @ed5dd000 s12544 r8192 d24320 u45056
[    0.000000] pcpu-alloc: s12544 r8192 d24320 u45056 alloc=11*4096
[    0.000000] pcpu-alloc: [0] 0 [0] 1 [0] 2 [0] 3 
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 981329
[    0.000000] Kernel command line: init=/lib/systemd/systemd rootwait rw root=PARTUUID=4e6f764d-03 console=tty0
[    0.000000] log_buf_len individual max cpu contribution: 65536 bytes
[    0.000000] log_buf_len total cpu_extra contributions: 196608 bytes
[    0.000000] log_buf_len min size: 131072 bytes
[    0.000000] log_buf_len: 524288 bytes
[    0.000000] early log buf free: 129412(98%)
[    0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[    0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
[    0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
[    0.000000] Memory: 3621552K/3932156K available (8117K kernel code, 366K rwdata, 2500K rodata, 540K init, 630K bss, 48460K reserved, 262144K cma-reserved, 2891772K highmem)
[    0.000000] Virtual kernel memory layout:
    vector  : 0xffff0000 - 0xffff1000   (   4 kB)
    fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
    vmalloc : 0xf0000000 - 0xff000000   ( 240 MB)
    lowmem  : 0xc0000000 - 0xef800000   ( 760 MB)
    pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
    modules : 0xbf000000 - 0xbfe00000   (  14 MB)
      .text : 0xc0008000 - 0xc0a66824   (10619 kB)
      .init : 0xc0a67000 - 0xc0aee000   ( 540 kB)
      .data : 0xc0aee000 - 0xc0b49a3c   ( 367 kB)
       .bss : 0xc0b49a3c - 0xc0be7314   ( 631 kB)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[    0.000000] Preemptible hierarchical RCU implementation.
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] L2C-310 erratum 769419 enabled
[    0.000000] L2C-310 enabling early BRESP for Cortex-A9
[    0.000000] L2C-310 full line of zeros enabled for Cortex-A9
[    0.000000] L2C-310 ID prefetch enabled, offset 1 lines
[    0.000000] L2C-310 dynamic clock gating enabled, standby mode enabled
[    0.000000] L2C-310 cache controller enabled, 16 ways, 1024 kB
[    0.000000] L2C-310: CACHE_ID 0x410000c7, AUX_CTRL 0x76070001
[    0.000000] Switching to timer-based delay loop, resolution 333ns
[    0.000007] sched_clock: 32 bits at 3000kHz, resolution 333ns, wraps every 1431655765682ns
[    0.001524] Console: colour dummy device 80x30
[    0.002613] console [tty0] enabled
[    0.002646] Calibrating delay loop (skipped), value calculated using timer frequency.. 6.00 BogoMIPS (lpj=30000)
[    0.002701] pid_max: default: 32768 minimum: 301
[    0.002982] Mount-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.003021] Mountpoint-cache hash table entries: 2048 (order: 1, 8192 bytes)
[    0.003738] Initializing cgroup subsys memory
[    0.003786] Initializing cgroup subsys devices
[    0.003820] Initializing cgroup subsys freezer
[    0.003852] Initializing cgroup subsys net_cls
[    0.003883] Initializing cgroup subsys blkio
[    0.003913] Initializing cgroup subsys perf_event
[    0.003945] Initializing cgroup subsys net_prio
[    0.004027] CPU: Testing write buffer coherency: ok
[    0.004079] ftrace: allocating 26433 entries in 78 pages
[    0.048931] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[    0.049079] Setting up static identity map for 0x10759b98 - 0x10759bf0
[    0.120498] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[    0.140475] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[    0.160470] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[    0.160556] Brought up 4 CPUs
[    0.160632] SMP: Total of 4 processors activated (24.00 BogoMIPS).
[    0.160653] CPU: All CPU(s) started in SVC mode.
[    0.161382] devtmpfs: initialized
[    0.162197] VFP support v0.3: implementor 41 architecture 3 part 30 variant 9 rev 4
[    0.177250] pinctrl core: initialized pinctrl subsystem
[    0.177716] regulator-dummy: no parameters
[    0.187942] NET: Registered protocol family 16
[    0.190396] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.219641] cpuidle: using governor ladder
[    0.249647] cpuidle: using governor menu
[    0.249805] CPU identified as i.MX6Q, silicon rev 1.2
[    0.258596] vdd1p1: 800 <--> 1375 mV at 1100 mV 
[    0.259066] vdd3p0: 2800 <--> 3150 mV at 3000 mV 
[    0.259496] vdd2p5: 2000 <--> 2750 mV at 2400 mV 
[    0.259932] vddarm: 725 <--> 1450 mV at 1150 mV 
[    0.260379] vddpu: 725 <--> 1450 mV at 1150 mV 
[    0.260862] vddsoc: 725 <--> 1450 mV at 1175 mV 
[    0.270955] No ATAGs?
[    0.271001] hw-breakpoint: found 5 (+1 reserved) breakpoint and 1 watchpoint registers.
[    0.271044] hw-breakpoint: maximum watchpoint size is 4 bytes.
[    0.271638] imx6q-pinctrl 20e0000.iomuxc: initialized IMX pinctrl driver
[    0.302452] 2P5V: 2500 mV 
[    0.302525] reg-fixed-voltage 2p5v: 2P5V supplying 2500000uV
[    0.302714] 3P3V: 3300 mV 
[    0.302782] reg-fixed-voltage 3p3v: 3P3V supplying 3300000uV
[    0.302977] usb_otg_vbus: 5000 mV 
[    0.303042] reg-fixed-voltage usb_otg_vbus: usb_otg_vbus supplying 5000000uV
[    0.710499] es8328-power: 5000 mV 
[    0.710571] reg-fixed-voltage es8328-regulator: es8328-power supplying 5000000uV
[    0.710802] lcd-lvds-power: 3300 mV 
[    0.710891] reg-fixed-voltage lcd-regulator: lcd-lvds-power supplying 3300000uV
[    0.920499] lcd-display-power: 3300 mV 
[    0.920571] reg-fixed-voltage display-regulator: lcd-display-power supplying 3300000uV
[    0.940496] sata-power: 3300 mV 
[    0.940577] reg-fixed-voltage sata-regulator: sata-power supplying 3300000uV
[    0.940787] pcie-power: 3300 mV 
[    0.940858] reg-fixed-voltage pcie-regulator: pcie-power supplying 3300000uV
[    0.941367] vgaarb: loaded
[    0.941748] SCSI subsystem initialized
[    0.941831] libata version 3.00 loaded.
[    0.942136] usbcore: registered new interface driver usbfs
[    0.942222] usbcore: registered new interface driver hub
[    0.942363] usbcore: registered new device driver usb
[    0.944347] stmpe-i2c 0-0044: Looking up vcc-supply from device tree
[    0.944449] stmpe-i2c 0-0044: Looking up vio-supply from device tree
[    0.945354] stmpe-i2c 0-0044: stmpe811 detected, chip id: 0x811
[    0.948035] i2c i2c-0: IMX I2C adapter registered
[    0.948069] of_dma_request_slave_channel: dma-names property of node '/soc/aips-bus@02100000/i2c@021a0000' missing or empty
[    0.948107] i2c i2c-0: can't use DMA
[    0.948804] i2c i2c-1: IMX I2C adapter registered
[    0.948834] of_dma_request_slave_channel: dma-names property of node '/soc/aips-bus@02100000/i2c@021a4000' missing or empty
[    0.948870] i2c i2c-1: can't use DMA
[    0.950263] i2c i2c-2: IMX I2C adapter registered
[    0.950295] of_dma_request_slave_channel: dma-names property of node '/soc/aips-bus@02100000/i2c@021a8000' missing or empty
[    0.950332] i2c i2c-2: can't use DMA
[    0.950543] pps_core: LinuxPPS API ver. 1 registered
[    0.950567] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[    0.950621] PTP clock support registered
[    0.950980] Advanced Linux Sound Architecture Driver Initialized.
[    0.952149] Bluetooth: Core ver 2.20
[    0.952212] NET: Registered protocol family 31
[    0.952232] Bluetooth: HCI device and connection manager initialized
[    0.952259] Bluetooth: HCI socket layer initialized
[    0.952285] Bluetooth: L2CAP socket layer initialized
[    0.952330] Bluetooth: SCO socket layer initialized
[    0.953034] cfg80211: Calling CRDA to update world regulatory domain
[    0.953284] Switched to clocksource mxc_timer1
[    0.984832] FS-Cache: Loaded
[    0.997747] NET: Registered protocol family 2
[    0.998504] TCP established hash table entries: 8192 (order: 3, 32768 bytes)
[    0.998610] TCP bind hash table entries: 8192 (order: 4, 65536 bytes)
[    0.998750] TCP: Hash tables configured (established 8192 bind 8192)
[    0.998854] TCP: reno registered
[    0.998883] UDP hash table entries: 512 (order: 2, 16384 bytes)
[    0.998955] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[    0.999217] NET: Registered protocol family 1
[    0.999293] PCI: CLS 0 bytes, default 64
[    0.999864] hw perfevents: enabled with armv7_cortex_a9 PMU driver, 7 counters available
[    1.002547] futex hash table entries: 1024 (order: 4, 65536 bytes)
[    1.002762] audit: initializing netlink subsys (disabled)
[    1.002829] audit: type=2000 audit(0.980:1): initialized
[    1.012045] zpool: loaded
[    1.012077] zbud: loaded
[    1.012746] VFS: Disk quotas dquot_6.5.2
[    1.012996] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    1.014516] squashfs: version 4.0 (2009/01/31) Phillip Lougher
[    1.015366] fuse init (API version 7.23)
[    1.016999] pstore: Registered eepromoops as persistent store backend
[    1.018770] NET: Registered protocol family 38
[    1.018892] bounce: pool size: 64 pages
[    1.018977] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
[    1.019015] io scheduler noop registered (default)
[    1.019041] io scheduler deadline registered
[    1.019304] io scheduler cfq registered
[    1.021556] pwm-backlight backlight: Looking up power-supply from device tree
[    1.023806] imx-sdma 20ec000.sdma: Direct firmware load for imx/sdma/sdma-imx6q.bin failed with error -2
[    1.023852] imx-sdma 20ec000.sdma: external firmware not found, using ROM firmware
[    1.027105] imx-sdma 20ec000.sdma: initialized
[    1.029006] pfuze100-regulator 1-0008: Full layer: 2, Metal layer: 1
[    1.029639] pfuze100-regulator 1-0008: FAB: 0, FIN: 0
[    1.029664] pfuze100-regulator 1-0008: pfuze100 found.
[    1.031243] SW1AB: 300 <--> 1875 mV at 1375 mV 
[    1.032076] SW1C: 300 <--> 1875 mV at 1375 mV 
[    1.032928] SW2: 800 <--> 3300 mV at 3000 mV 
[    1.033761] SW3A: 400 <--> 1975 mV at 1500 mV 
[    1.034584] SW3B: 400 <--> 1975 mV at 1500 mV 
[    1.035386] SW4: override max_uV, 3300000 -> 1975000
[    1.035402] SW4: 800 <--> 1975 mV at 1800 mV 
[    1.036680] SWBST: 5000 <--> 5150 mV at 5000 mV 
[    1.037970] VSNVS: 1000 <--> 3000 mV at 3000 mV 
[    1.038203] VREFDDR: override min_uV, 1 -> 750000
[    1.038214] VREFDDR: override max_uV, 2147483647 -> 750000
[    1.038841] VREFDDR: 750 mV 
[    1.039645] VGEN1: 800 <--> 1550 mV at 800 mV 
[    1.040471] VGEN2: 800 <--> 1550 mV at 1500 mV 
[    1.041284] VGEN3: 1800 <--> 3300 mV at 1800 mV 
[    1.042106] VGEN4: 1800 <--> 3300 mV at 1800 mV 
[    1.042925] VGEN5: 1800 <--> 3300 mV at 2500 mV 
[    1.043783] VGEN6: 1800 <--> 3300 mV at 2800 mV 
[    1.122660] 21e8000.serial: ttymxc1 at MMIO 0x21e8000 (irq = 295, base_baud = 5000000) is a IMX
[    1.123255] 21ec000.serial: ttymxc2 at MMIO 0x21ec000 (irq = 296, base_baud = 5000000) is a IMX
[    1.123948] 21f0000.serial: ttymxc3 at MMIO 0x21f0000 (irq = 297, base_baud = 5000000) is a IMX
[    1.124488] [drm] Initialized drm 1.1.0 20060810
[    1.126462] panel-simple panel: Looking up power-supply from device tree
[    1.126480] panel-simple panel: Looking up power-supply property in node /panel failed
[    1.126509] panel supply power not found, using dummy regulator
[    1.126814] i2c 2-005c: Driver it6251 requests probe deferral
[    1.128100] imx-ipuv3 2400000.ipu: IPUv3H probed
[    1.129469] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    1.129500] [drm] No driver support for vblank timestamp query.
[    1.129608] imx-drm display-subsystem: bound imx-ipuv3-crtc.0 (ops ipu_crtc_ops)
[    1.129714] imx-drm display-subsystem: bound imx-ipuv3-crtc.4 (ops ipu_crtc_ops)
[    1.129800] imx-drm display-subsystem: bound imx-ipuv3-crtc.5 (ops ipu_crtc_ops)
[    1.129912] imx-drm display-subsystem: bound imx-ipuv3-crtc.1 (ops ipu_crtc_ops)
[    1.130230] imx-hdmi 120000.hdmi: Detected HDMI controller 0x13:0xa:0xa0:0xc1
[    1.130714] imx-drm display-subsystem: bound 120000.hdmi (ops hdmi_ops)
[    1.130831] /soc/aips-bus@02000000/ldb@020e0008/lvds-channel@0: could not find display-timings node
[    1.130863] /soc/aips-bus@02000000/ldb@020e0008/lvds-channel@0: no timings specified
[    1.131080] imx-ldb 2000000.aips-bus:ldb@020e0008: dual-channel mode, ignoring second output
[    1.131122] imx-drm display-subsystem: bound 2000000.aips-bus:ldb@020e0008 (ops imx_ldb_ops)
[    1.161771] Console: switching to colour frame buffer device 240x67
[    1.175261] imx-drm display-subsystem: fb0:  frame buffer device
[    1.175350] imx-drm display-subsystem: registered panic notifier
[    1.203310] [drm] Initialized imx-drm 1.0.0 20120507 on minor 0
[    1.203708] imx-ipuv3 2800000.ipu: IPUv3H probed
[    1.211610] brd: module loaded
[    1.215642] loop: module loaded
[    1.218611] senoko 0-0020: senoko 'S' version 2.0 (features: 0x02)
[    1.220506] ahci-imx 2200000.sata: fsl,transmit-level-mV value 1025, using 00000024
[    1.220624] ahci-imx 2200000.sata: fsl,transmit-boost-mdB value 0, using 00000000
[    1.220730] ahci-imx 2200000.sata: fsl,transmit-atten-16ths value 8, using 00002800
[    1.220835] ahci-imx 2200000.sata: fsl,receive-eq-mdB not specified, using 05000000
[    1.220971] ahci-imx 2200000.sata: Looking up target-supply from device tree
[    1.223897] ahci-imx 2200000.sata: SSS flag set, parallel bus scan disabled
[    1.224025] ahci-imx 2200000.sata: AHCI 0001.0300 32 slots 1 ports 3 Gbps 0x1 impl platform mode
[    1.224147] ahci-imx 2200000.sata: flags: ncq sntf stag pm led clo only pmp pio slum part ccc apst 
[    1.225906] scsi host0: ahci_platform
[    1.226324] ata1: SATA max UDMA/133 mmio [mem 0x02200000-0x02203fff] port 0x100 irq 300
[    1.228536] spi_imx 2010000.ecspi: probed
[    1.230091] libphy: Fixed MDIO Bus: probed
[    1.231416] fec 2188000.ethernet: Looking up phy-supply from device tree
[    1.231435] fec 2188000.ethernet: Looking up phy-supply property in node /soc/aips-bus@02100000/ethernet@02188000 failed
[    1.231459] 2188000.ethernet supply phy not found, using dummy regulator
[    1.243761] pps pps0: new PPS source ptp0
[    1.248621] libphy: fec_enet_mii_bus: probed
[    1.249307] fec 2188000.ethernet eth0: registered PHC device 0
[    1.249780] usbcore: registered new interface driver asix
[    1.249921] usbcore: registered new interface driver ax88179_178a
[    1.250067] usbcore: registered new interface driver cdc_ether
[    1.250204] usbcore: registered new interface driver cdc_eem
[    1.250342] usbcore: registered new interface driver cdc_subset
[    1.250520] usbcore: registered new interface driver cdc_ncm
[    1.250636] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    1.250733] ehci-pci: EHCI PCI platform driver
[    1.250853] ehci-platform: EHCI generic platform driver
[    1.251278] usbcore: registered new interface driver usb-storage
[    1.255397] usbcore: registered new interface driver usbserial
[    1.259305] usbcore: registered new interface driver usbserial_generic
[    1.263302] usbserial: USB Serial support registered for generic
[    1.267305] usbcore: registered new interface driver usb_serial_simple
[    1.271230] usbserial: USB Serial support registered for carelink
[    1.275198] usbserial: USB Serial support registered for zio
[    1.279108] usbserial: USB Serial support registered for funsoft
[    1.283026] usbserial: USB Serial support registered for flashloader
[    1.286916] usbserial: USB Serial support registered for google
[    1.290751] usbserial: USB Serial support registered for vivopay
[    1.294556] usbserial: USB Serial support registered for moto_modem
[    1.298305] usbserial: USB Serial support registered for novatel_gps
[    1.302013] usbserial: USB Serial support registered for hp4x
[    1.305677] usbserial: USB Serial support registered for suunto
[    1.309251] usbserial: USB Serial support registered for siemens_mpi
[    1.314378] imx_usb 2184000.usb: Looking up vbus-supply from device tree
[    1.314700] ci_hdrc ci_hdrc.0: ChipIdea HDRC found, lpm: 0; cap: f01b2100 op: f01b2140
[    1.317684] ci_hdrc ci_hdrc.0: It is OTG capable controller
[    1.318583] imx_usb 2184200.usb: Looking up vbus-supply from device tree
[    1.318847] ci_hdrc ci_hdrc.1: ChipIdea HDRC found, lpm: 0; cap: f01b6300 op: f01b6340
[    1.322349] ci_hdrc ci_hdrc.1: doesn't support gadget
[    1.325685] ci_hdrc ci_hdrc.1: EHCI Host Controller
[    1.328943] ci_hdrc ci_hdrc.1: new USB bus registered, assigned bus number 1
[    1.343320] ci_hdrc ci_hdrc.1: USB 2.0 started, EHCI 1.00
[    1.346723] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
[    1.349936] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    1.353122] usb usb1: Product: EHCI Host Controller
[    1.356284] usb usb1: Manufacturer: Linux 3.19.0-00268-g04e9d08 ehci_hcd
[    1.359422] usb usb1: SerialNumber: ci_hdrc.1
[    1.363213] hub 1-0:1.0: USB hub found
[    1.366349] hub 1-0:1.0: 1 port detected
[    1.370307] mousedev: PS/2 mouse device common for all mice
[    1.373964] input: 20b8000.kpp as /devices/soc0/soc/2000000.aips-bus/20b8000.kpp/input/input0
[    1.378561] input: Senoko keypad as /devices/soc0/soc/2100000.aips-bus/21a0000.i2c/i2c-0/0-0020/senoko-keypad.1/input/input1
[    1.386991] rtc-pcf8523 0-0068: rtc core: registered rtc-pcf8523 as rtc0
[    1.390865] snvs_rtc 20cc034.snvs-rtc-lp: rtc core: registered 20cc034.snvs-rtc-lp as rtc1
[    1.394353] i2c /dev entries driver
[    1.441389] sbs-battery 0-000b: sbs-battery: battery gas gauge device registered
[    1.448554] imx_thermal 2000000.aips-bus:tempmon: failed to register cpufreq cooling device: -517
[    1.451926] platform 2000000.aips-bus:tempmon: Driver imx_thermal requests probe deferral
[    1.455997] imx2-wdt 20bc000.wdog: timeout 60 sec (nowayout=0)
[    1.459528] usbcore: registered new interface driver bcm203x
[    1.462883] usbcore: registered new interface driver bpa10x
[    1.466266] usbcore: registered new interface driver btusb
[    1.469604] usbcore: registered new interface driver ath3k
[    1.473096] Driver 'mmcblk' needs updating - please use bus_type methods
[    1.476557] sdhci: Secure Digital Host Controller Interface driver
[    1.479945] sdhci: Copyright(c) Pierre Ossman
[    1.483355] sdhci-pltfm: SDHCI platform and OF driver helper
[    1.487347] sdhci-esdhc-imx 2194000.usdhc: could not get ultra high speed state, work on normal mode
[    1.491984] sdhci-esdhc-imx 2194000.usdhc: Looking up vmmc-supply from device tree
[    1.492002] sdhci-esdhc-imx 2194000.usdhc: Looking up vmmc-supply property in node /soc/aips-bus@02100000/usdhc@02194000 failed
[    1.492030] sdhci-esdhc-imx 2194000.usdhc: Looking up vqmmc-supply from device tree
[    1.492044] sdhci-esdhc-imx 2194000.usdhc: Looking up vqmmc-supply property in node /soc/aips-bus@02100000/usdhc@02194000 failed
[    1.492058] sdhci-esdhc-imx 2194000.usdhc: No vmmc regulator found
[    1.495397] sdhci-esdhc-imx 2194000.usdhc: No vqmmc regulator found
[    1.543467] mmc0: SDHCI controller on 2194000.usdhc [2194000.usdhc] using ADMA
[    1.547194] sdhci-esdhc-imx 2198000.usdhc: could not get ultra high speed state, work on normal mode
[    1.550731] sdhci-esdhc-imx 2198000.usdhc: Looking up vmmc-supply from device tree
[    1.550749] sdhci-esdhc-imx 2198000.usdhc: Looking up vmmc-supply property in node /soc/aips-bus@02100000/usdhc@02198000 failed
[    1.550770] sdhci-esdhc-imx 2198000.usdhc: Looking up vqmmc-supply from device tree
[    1.550785] sdhci-esdhc-imx 2198000.usdhc: Looking up vqmmc-supply property in node /soc/aips-bus@02100000/usdhc@02198000 failed
[    1.550801] sdhci-esdhc-imx 2198000.usdhc: No vmmc regulator found
[    1.554214] sdhci-esdhc-imx 2198000.usdhc: No vqmmc regulator found
[    1.563333] ata1: SATA link down (SStatus 0 SControl 300)
[    1.603323] mmc1: SDHCI controller on 2198000.usdhc [2198000.usdhc] using ADMA
[    1.607294] ledtrig-cpu: registered to indicate activity on CPUs
[    1.610847] hidraw: raw HID events driver (C) Jiri Kosina
[    1.614782] usbcore: registered new interface driver usbhid
[    1.618278] usbhid: USB HID core driver
[    1.623155] es8328 2-0011: Looking up DVDD-supply from device tree
[    1.623258] es8328 2-0011: Looking up AVDD-supply from device tree
[    1.623368] es8328 2-0011: Looking up PVDD-supply from device tree
[    1.623442] es8328 2-0011: Looking up HPVDD-supply from device tree
[    1.624989] imx-es8328 sound: Looking up audio-amp-supply from device tree
[    1.632783] imx-es8328 sound: es8328-hifi-analog <-> 2028000.ssi mapping ok
[    1.652365] mmc1: host does not support reading read-only switch, assuming write-enable
[    1.663716] mmc1: new high speed SDHC card at address e624
[    1.667579] mmcblk0: mmc1:e624 SS16G 14.8 GiB 
[    1.672416]  mmcblk0: p1 p2 p3
[    1.683369] usb 1-1: new high-speed USB device number 2 using ci_hdrc
[    1.746464] input: imx-audio-es8328 Headphone Jack as /devices/soc0/sound/sound/card0/input2
[    1.750643] gre: GRE over IPv4 demultiplexor driver
[    1.754384] TCP: cubic registered
[    1.757925] Initializing XFRM netlink socket
[    1.761488] NET: Registered protocol family 17
[    1.765105] NET: Registered protocol family 15
[    1.768797] Bluetooth: RFCOMM TTY layer initialized
[    1.772412] Bluetooth: RFCOMM socket layer initialized
[    1.776042] Bluetooth: RFCOMM ver 1.11
[    1.779657] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[    1.783309] Bluetooth: BNEP filters: protocol multicast
[    1.786938] Bluetooth: BNEP socket layer initialized
[    1.790599] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[    1.794307] Bluetooth: HIDP socket layer initialized
[    1.799195] cpu cpu0: Looking up arm-supply from device tree
[    1.799274] cpu cpu0: Looking up pu-supply from device tree
[    1.799333] cpu cpu0: Looking up soc-supply from device tree
[    1.800477] ThumbEE CPU extension supported.
[    1.803001] Registering SWP/SWPB emulation handler
[    1.806177] registered taskstats version 1
[    1.808935] imx6q-pcie 1ffc000.pcie: Looking up vdd3p3-supply from device tree
[    1.809029] imx6q-pcie 1ffc000.pcie: Looking up vdd1p5-supply from device tree
[    1.835023] usb 1-1: New USB device found, idVendor=05e3, idProduct=0614
[    1.837520] usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[    1.840004] usb 1-1: Product: USB2.0 Hub Charger
[    1.843171] hub 1-1:1.0: USB hub found
[    1.846022] hub 1-1:1.0: 4 ports detected
[    1.926786] imx6q-pcie 1ffc000.pcie: PCI host bridge to bus 0000:00
[    1.929264] pci_bus 0000:00: root bus resource [io  0x1000-0xffff]
[    1.931735] pci_bus 0000:00: root bus resource [mem 0x01000000-0x01efffff]
[    1.934223] pci_bus 0000:00: root bus resource [bus 00-ff]
[    1.936672] pci 0000:00:00.0: [16c3:abcd] type 01 class 0x060400
[    1.936696] pci 0000:00:00.0: reg 0x10: [mem 0x00000000-0x000fffff]
[    1.936713] pci 0000:00:00.0: reg 0x38: [mem 0x00000000-0x0000ffff pref]
[    1.936756] pci 0000:00:00.0: supports D1
[    1.936764] pci 0000:00:00.0: PME# supported from D0 D1 D3hot D3cold
[    1.936950] PCI: bus0: Fast back to back transfers disabled
[    1.939550] pci 0000:01:00.0: [168c:0034] type 00 class 0x028000
[    1.939649] pci 0000:01:00.0: reg 0x10: [mem 0x00000000-0x0007ffff 64bit]
[    1.939812] pci 0000:01:00.0: reg 0x30: [mem 0x00000000-0x0000ffff pref]
[    1.940031] pci 0000:01:00.0: supports D1
[    1.940039] pci 0000:01:00.0: PME# supported from D0 D1 D3hot
[    1.940302] PCI: bus1: Fast back to back transfers disabled
[    1.942656] pci_bus 0000:01: busn_res: [bus 01-ff] end is updated to 01
[    1.942758] pci 0000:00:00.0: BAR 0: assigned [mem 0x01000000-0x010fffff]
[    1.945140] pci 0000:00:00.0: BAR 8: assigned [mem 0x01100000-0x011fffff]
[    1.945150] pci 0000:00:00.0: BAR 9: assigned [mem 0x01200000-0x012fffff pref]
[    1.945157] pci 0000:00:00.0: BAR 6: assigned [mem 0x01300000-0x0130ffff pref]
[    1.945169] pci 0000:01:00.0: BAR 0: assigned [mem 0x01100000-0x0117ffff 64bit]
[    1.945226] pci 0000:01:00.0: BAR 6: assigned [mem 0x01200000-0x0120ffff pref]
[    1.945232] pci 0000:00:00.0: PCI bridge to [bus 01]
[    1.945238] pci 0000:00:00.0:   bridge window [mem 0x01100000-0x011fffff]
[    1.945243] pci 0000:00:00.0:   bridge window [mem 0x01200000-0x012fffff pref]
[    1.945461] pcieport 0000:00:00.0: Signaling PME through PCIe PME interrupt
[    1.945465] pci 0000:01:00.0: Signaling PME through PCIe PME interrupt
[    1.945472] pcie_pme 0000:00:00.0:pcie01: service driver pcie_pme loaded
[    1.945751] ath9k 0000:01:00.0: enabling device (0140 -> 0142)
[    1.955724] ath: EEPROM regdomain: 0x60
[    1.955726] ath: EEPROM indicates we should expect a direct regpair map
[    1.955735] ath: Country alpha2 being used: 00
[    1.955737] ath: Regpair used: 0x60
[    1.966214] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[    1.967466] ieee80211 phy0: Atheros AR9462 Rev:2 mem=0xf0800000, irq=320
[    1.968107] it6251 2-005c: Looking up power-supply from device tree
[    1.972513] input: gpio-keys as /devices/soc0/gpio-keys/input/input3
[    1.974439] rtc-pcf8523 0-0068: setting system clock to 2015-05-01 22:29:04 UTC (1430519344)
[    1.983038] PM: Checking hibernation image partition /dev/sda2
[    1.983102] PM: Hibernation image not present or could not be loaded.
[    1.983137] SW4: disabling
[    1.983150] usb_otg_vbus: disabling
[    1.983420] ALSA device list:
[    1.983425]   #0: imx-audio-es8328
[    2.012545] EXT4-fs (mmcblk0p3): couldn't mount as ext3 due to feature incompatibilities
[    2.015292] EXT4-fs (mmcblk0p3): couldn't mount as ext2 due to feature incompatibilities
[    2.036142] EXT4-fs (mmcblk0p3): mounted filesystem with ordered data mode. Opts: (null)
[    2.038335] VFS: Mounted root (ext4 filesystem) on device 179:3.
[    2.041373] devtmpfs: mounted
[    2.044071] Freeing unused kernel memory: 540K (c0a67000 - c0aee000)
[    2.123659] usb 1-1.2: new high-speed USB device number 3 using ci_hdrc
[    2.234782] usb 1-1.2: New USB device found, idVendor=0b95, idProduct=772b
[    2.237430] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    2.239602] usb 1-1.2: Product: AX88772B
[    2.241732] usb 1-1.2: Manufacturer: ASIX Elec. Corp.
[    2.244667] usb 1-1.2: SerialNumber: 000001
[    2.314032] it6251 2-005c: System status: 0x3a
[    2.316600] random: systemd urandom read with 31 bits of entropy available
[    2.319302] dummy 2-005e: error -5 writing to lvds addr 0x5
[    2.321003] systemd[1]: systemd 215 running in system mode. (+PAM +AUDIT +SELINUX +IMA +SYSVINIT +LIBCRYPTSETUP +GCRYPT +ACL +XZ -SECCOMP -APPARMOR)
[    2.321210] systemd[1]: Detected architecture 'arm'.
[    2.326433] dummy 2-005e: it6251.c:it6251_init:277 error -1 writing 255 to 5
[    2.489632] NET: Registered protocol family 10
[    2.492920] systemd[1]: Inserted module 'ipv6'
[    2.496756] systemd[1]: Set hostname to <fawkes>.
[    2.695152] it6251 2-005c: System status: 0x3a
[    2.697797] it6251 2-005c: Display didn't stabilize.  This may be because the LVDS port is still in powersave mode.
[    2.700433] it6251 2-005c: Will try again in 400 msecs
[    3.067235] asix 1-1.2:1.0 eth1: register 'asix' at usb-ci_hdrc.1-1.2, ASIX AX88772B USB 2.0 Ethernet, 00:0e:c6:87:72:01
[    3.094038] it6251 2-005c: System status: 0x3a
[    3.099469] dummy 2-005e: error -5 writing to lvds addr 0x5
[    3.102017] dummy 2-005e: it6251.c:it6251_init:277 error -1 writing 255 to 5
[    3.139619] systemd[1]: Found ordering cycle on basic.target/start
[    3.142115] systemd[1]: Found dependency on sysinit.target/start
[    3.143664] usb 1-1.3: new full-speed USB device number 4 using ci_hdrc
[    3.147066] systemd[1]: Found dependency on rpcbind.service/start
[    3.149526] systemd[1]: Found dependency on network-online.target/start
[    3.152014] systemd[1]: Found dependency on network.target/start
[    3.154461] systemd[1]: Found dependency on novena-firstrun.service/start
[    3.156907] systemd[1]: Found dependency on dbus.service/start
[    3.159360] systemd[1]: Found dependency on basic.target/start
[    3.161769] systemd[1]: Breaking ordering cycle by deleting job rpcbind.service/start
[    3.164282] systemd[1]: Job rpcbind.service/start deleted to break ordering cycle starting with basic.target/start
[    3.171774] systemd[1]: Starting Forward Password Requests to Wall Directory Watch.
[    3.174623] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[    3.177283] systemd[1]: Expecting device dev-ttymxc1.device...
[    3.182871] systemd[1]: Starting Remote File Systems (Pre).
[    3.188617] systemd[1]: Reached target Remote File Systems (Pre).
[    3.191343] systemd[1]: Starting Encrypted Volumes.
[    3.197101] systemd[1]: Reached target Encrypted Volumes.
[    3.199927] systemd[1]: Starting Arbitrary Executable File Formats File System Automount Point.
[    3.206103] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[    3.208926] systemd[1]: Starting Dispatch Password Requests to Console Directory Watch.
[    3.211796] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[    3.214572] systemd[1]: Starting Paths.
[    3.220370] systemd[1]: Reached target Paths.
[    3.223158] systemd[1]: Expecting device dev-disk-by\x2dpath-platform\x2d2198000.usdhc\x2dpart2.device...
[    3.229156] systemd[1]: Expecting device dev-disk-by\x2dpath-platform\x2d2198000.usdhc\x2dpart1.device...
[    3.235291] systemd[1]: Starting Root Slice.
[    3.241399] systemd[1]: Created slice Root Slice.
[    3.244314] systemd[1]: Starting User and Session Slice.
[    3.250482] systemd[1]: Created slice User and Session Slice.
[    3.253417] systemd[1]: Starting /dev/initctl Compatibility Named Pipe.
[    3.255524] usb 1-1.3: string descriptor 0 read error: -22
[    3.255535] usb 1-1.3: New USB device found, idVendor=13d3, idProduct=3393
[    3.255540] usb 1-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[    3.268472] usb 1-1.3: Direct firmware load for ar3k/AthrBT_0x11020000.dfu failed with error -2
[    3.268479] Bluetooth: Patch file not found ar3k/AthrBT_0x11020000.dfu
[    3.268482] Bluetooth: Loading patch file failed
[    3.268498] ath3k: probe of 1-1.3:1.0 failed with error -2
[    3.279913] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[    3.282778] systemd[1]: Starting Delayed Shutdown Socket.
[    3.288910] systemd[1]: Listening on Delayed Shutdown Socket.
[    3.291802] systemd[1]: Starting Journal Socket (/dev/log).
[    3.297974] systemd[1]: Listening on Journal Socket (/dev/log).
[    3.300894] systemd[1]: Starting udev Control Socket.
[    3.306909] systemd[1]: Listening on udev Control Socket.
[    3.309714] systemd[1]: Starting udev Kernel Socket.
[    3.315617] systemd[1]: Listening on udev Kernel Socket.
[    3.318398] systemd[1]: Starting Journal Socket.
[    3.324327] systemd[1]: Listening on Journal Socket.
[    3.327159] systemd[1]: Starting System Slice.
[    3.333082] systemd[1]: Created slice System Slice.
[    3.335934] systemd[1]: Started File System Check on Root Device.
[    3.338729] systemd[1]: Starting system-systemd\x2dfsck.slice.
[    3.344835] systemd[1]: Created slice system-systemd\x2dfsck.slice.
[    3.347628] systemd[1]: Starting system-serial\x2dgetty.slice.
[    3.353579] systemd[1]: Created slice system-serial\x2dgetty.slice.
[    3.353657] usb 1-1.4: new high-speed USB device number 5 using ci_hdrc
[    3.359067] systemd[1]: Starting system-getty.slice.
[    3.364982] systemd[1]: Created slice system-getty.slice.
[    3.367780] systemd[1]: Starting Increase datagram queue length...
[    3.375601] systemd[1]: Starting Nameserver information manager...
[    3.389259] systemd[1]: Started Set Up Additional Binary Formats.
[    3.424897] systemd[1]: Starting Load Kernel Modules...
[    3.437495] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[    3.446764] systemd[1]: Mounting Debug File System...
[    3.455772] systemd[1]: Mounted Huge Pages File System.
[    3.459775] systemd[1]: Starting udev Coldplug all Devices...
[    3.465798] usb 1-1.4: New USB device found, idVendor=05e3, idProduct=0614
[    3.465806] usb 1-1.4: New USB device strings: Mfr=0, Product=1, SerialNumber=0
[    3.465810] usb 1-1.4: Product: USB2.0 Hub Charger
[    3.466730] hub 1-1.4:1.0: USB hub found
[    3.467285] hub 1-1.4:1.0: 4 ports detected
[    3.485951] systemd[1]: Mounted POSIX Message Queue File System.
[    3.489731] systemd[1]: Starting LSB: Set keymap...
[    3.494143] it6251 2-005c: System status: 0x3a
[    3.494150] it6251 2-005c: Display didn't stabilize.  This may be because the LVDS port is still in powersave mode.
[    3.494156] it6251 2-005c: Will try again in 450 msecs
[    3.508210] systemd[1]: Starting LSB: NFS support files common to client and server...
[    3.517951] systemd[1]: Starting Slices.
[    3.524822] systemd[1]: Reached target Slices.
[    3.533952] systemd[1]: Mounted Debug File System.
[    3.540974] systemd[1]: Started Increase datagram queue length.
[    3.551608] systemd[1]: Started Load Kernel Modules.
[    3.559733] systemd[1]: Started Create list of required static device nodes for the current kernel.
[    3.571492] systemd[1]: Started LSB: Set keymap.
[    3.583989] systemd[1]: Started Nameserver information manager.
[    3.691376] systemd[1]: Starting Create Static Device Nodes in /dev...
[    3.703162] systemd[1]: Starting Apply Kernel Variables...
[    3.713248] systemd[1]: Mounted Configuration File System.
[    3.718687] systemd[1]: Mounting FUSE Control File System...
[    3.730522] systemd[1]: Starting Syslog Socket.
[    3.740438] systemd[1]: Listening on Syslog Socket.
[    3.743850] usb 1-1.4.2: new full-speed USB device number 6 using ci_hdrc
[    3.748247] systemd[1]: Starting Journal Service...
[    3.762927] systemd[1]: Started Journal Service.
[    3.868933] usb 1-1.4.2: New USB device found, idVendor=17ef, idProduct=6047
[    3.869914] systemd-udevd[178]: starting version 215
[    3.875078] usb 1-1.4.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    3.875086] usb 1-1.4.2: Product: ThinkPad Compact USB Keyboard with TrackPoint
[    3.875091] usb 1-1.4.2: Manufacturer: Lenovo
[    3.891308] input: Lenovo ThinkPad Compact USB Keyboard with TrackPoint as /devices/soc0/soc/2100000.aips-bus/2184200.usb/ci_hdrc.1/usb1/1-1/1-1.4/1-1.4.2/1-1.4.2:1.0/0003:17EF:6047.0001/input/input4
[    3.943827] lenovo 0003:17EF:6047.0001: input,hidraw0: USB HID v1.00 Keyboard [Lenovo ThinkPad Compact USB Keyboard with TrackPoint] on usb-ci_hdrc.1-1.4.2/input0
[    3.944247] it6251 2-005c: System status: 0x3a
[    3.947130] dummy 2-005e: error -5 writing to lvds addr 0x5
[    3.947140] dummy 2-005e: it6251.c:it6251_init:277 error -1 writing 255 to 5
[    3.965643] input: Lenovo ThinkPad Compact USB Keyboard with TrackPoint as /devices/soc0/soc/2100000.aips-bus/2184200.usb/ci_hdrc.1/usb1/1-1/1-1.4/1-1.4.2/1-1.4.2:1.1/0003:17EF:6047.0002/input/input5
[    4.024129] lenovo 0003:17EF:6047.0002: input,hiddev0,hidraw1: USB HID v1.00 Mouse [Lenovo ThinkPad Compact USB Keyboard with TrackPoint] on usb-ci_hdrc.1-1.4.2/input1
[    4.351775] it6251 2-005c: System status: 0x3a
[    4.356922] it6251 2-005c: Display didn't stabilize.  This may be because the LVDS port is still in powersave mode.
[    4.364029] it6251 2-005c: Will try again in 500 msecs
[    4.370719] EXT4-fs (mmcblk0p3): re-mounted. Opts: barrier=1,errors=remount-ro
[    4.380245] media: Linux media interface: v0.10
[    4.415459] Linux video capture interface: v2.00
[    4.454402] random: nonblocking pool is initialized
[    4.574344] coda 2040000.vpu: Direct firmware load for v4l-coda960-imx6q.bin failed with error -2
[    4.579137] coda 2040000.vpu: firmware request failed
[    4.794119] Adding 32764k swap on /dev/mmcblk0p2.  Priority:-1 extents:1 across:32764k SSFS
[    4.874104] it6251 2-005c: System status: 0x3a
[    4.877175] dummy 2-005e: error -5 writing to lvds addr 0x5
[    4.877183] dummy 2-005e: it6251.c:it6251_init:277 error -1 writing 255 to 5
[    5.290373] it6251 2-005c: System status: 0x3a
[    5.295021] it6251 2-005c: Display didn't stabilize.  This may be because the LVDS port is still in powersave mode.
[    5.298202] it6251 2-005c: Will try again in 550 msecs
[    5.339117] systemd-journald[174]: Received request to flush runtime journal from PID 1
[    5.844141] it6251 2-005c: System status: 0x3e
[    5.849459] it6251 2-005c: RPCLKCnt: 2202
[    5.854282] it6251 2-005c: Clock: 0x194
[    5.854953] it6251 2-005c: Ref Link State: 0x00
[    5.854957] it6251 2-005c: eDP system is already stable
[    8.614518] fec 2188000.ethernet eth0: Freescale FEC PHY driver [Micrel KSZ9021 Gigabit PHY] (mii_bus:phy_addr=2188000.ethernet:07, irq=-1)
[    8.733781] vgaarb: this pci device is not a vga device
[    8.850514] vgaarb: this pci device is not a vga device

Same thing happens as before- a quick flash where I can see the X11 cursor, then black screen, no backlight.

Consoles still work. Mostly. Interestingly enough I can also get a black screen by running "ls". Logging out (blindly) of the console brings it back.

Re: Screen occasionally fails to come on when booting

If the backlight is off, then chances are that something in your environment is setting the brightness to 0 when you log in.

There's a problem I've seen that I haven't tracked down yet where my backlight brightness goes down to 1 when I log into X.  It's not an issue for me, because I keep mashing the Brightness+ key on my keyboard and all is well.

If your keyboard has a Brightness key, you might try mashing that.

Now that I know someone else is having the same problem, I'll look into it further and let you know what I find.

Re: Screen occasionally fails to come on when booting

I stand corrected- the backlight IS on, I just couldn't see it in the lighting.

Is there any other information I can provide that would help? Places I could dig around on my own? Though it's kind of awkward doing so with no X and no "ls"... That's one of the weirder bugs I've seen.

Re: Screen occasionally fails to come on when booting

After maybe 10 good boots, the fail has occurred to me again.
In my case at least, I think the novena doesn't boot at all. When this happens, my bluetooth keyboard doesn't get paired even if I let it try much longer than the boot process is. The backlight, at least in my case, is always on.

I will try to get a FTDI cable in the next days to get more information if this happens again.

Once the problem occurs, I have to power on/off the novena maybe 15-20 times to get it to work.

Re: Screen occasionally fails to come on when booting

+1. Experienced this problem also, with the laptop failing to boot but the screen backlight coming on. Found that pressing reset when this happens to be more reliable than power cycling.

19

Re: Screen occasionally fails to come on when booting

Ok, I'm seeing this too.

This time I had it on a resume from hibernation.
However, it is already happening during the kernel phase before restoring from disk.

Note: the u-boot logo did come up so u-boot initializes the screen fine.

Just to be sure the logs:

[    1.948980] i2c 2-005c: Driver it6251 requests probe deferral
[    3.513943] it6251 2-005c: System status: 0x3a
[    3.521369] dummy 2-005e: error -5 writing to lvds addr 0x5
[    3.527088] dummy 2-005e: it6251.c:it6251_init:281 error -1 writing 255 to 5
[    4.019529] it6251 2-005c: System status: 0x3a
[    4.024056] it6251 2-005c: Display didn't stabilize.  This may be because the LVDS port is still in power save mode.
[    4.034597] it6251 2-005c: Will try again in 400 msecs
[    4.433910] it6251 2-005c: System status: 0x3a
[    4.443359] dummy 2-005e: error -5 writing to lvds addr 0x5
[    4.451347] dummy 2-005e: it6251.c:it6251_init:281 error -1 writing 255 to 5
[    5.012861] it6251 2-005c: System status: 0x3a
[    5.018563] it6251 2-005c: Display didn't stabilize.  This may be because the LVDS port is still in power save mode.
...

Note also that the hibernation restore just happens and then also the restored kernel cannot recover the screen and gives up.
At this point the screen is black.

My theory also based on what I saw with hibernation (and which I thought I fixed): the power on/off in quick succession makes it unstable.
This happened between transition of initial kernel and restore from hibernation, but might also happen between u-boot and initial kernel startup.
Maybe we should tell the kernel u-boot init was already fine and leave it somehow.

Re: Screen occasionally fails to come on when booting

job wrote:

Note: the u-boot logo did come up so u-boot initializes the screen fine.

For me the uboot logo doesn't show, it doesn't show anything at all, it just turns on the backlight and stays that way

21

Re: Screen occasionally fails to come on when booting

Note that the boot logo only happens with the new u-boot from https://nas.xobs.io/novena/20150429/
Are you using that?

22

Re: Screen occasionally fails to come on when booting

Ah 1 minute later, press my power button and:

U-Boot 2015.04-rc1-02823-g42ae9d5 (Apr 29 2015 - 11:19:31)

CPU:   Freescale i.MX6Q rev1.2 at 792 MHz
Reset cause: POR
Board: Novena 4x
I2C:   ready
DRAM:  3.8 GiB
PMIC: PFUZE100 ID=0x10
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
Using default environment

auto-detected panel Chimei-FHD
Display: Chimei-FHD (1920x1080)
In:    serial
Out:   serial
Err:   serial
Display didn't stabilize.
This may be because the LVDS port is still in powersave mode.
Display didn't stabilize.
This may be because the LVDS port is still in powersave mode.
Display didn't stabilize.
This may be because the LVDS port is still in powersave mode.
Display didn't stabilize.
....

with that same u-boot.

So I guess it is not fully reliable at u-boot too.
I'm not on the charger when this happens.

23

Re: Screen occasionally fails to come on when booting

xobs wrote:

... newer U-Boot (https://nas.xobs.io/novena/20150429/u-b … _armhf.deb)?

I'm aiming to release these packages to everyone next week, so they should be stable.  Just install them like normal packages (dpkg -i *.deb).


Could it be that the u-boot installer is not doing a novena-install-spl?

Not sure how relevant this is for the screen init, but if we are testing new u-boots it may matter.
I could not locate where it does this and saw inconsistent version strings before.
Maybe it is related to having to run /usr/sbin/novena-install-spl manually.

Re: Screen occasionally fails to come on when booting

job wrote:

Note that the boot logo only happens with the new u-boot from https://nas.xobs.io/novena/20150429/
Are you using that?

Yes, I'm using the new version. Today I must have tried to boot 40 times and I ended giving up....

I always use the charger, for now, because I haven't finished my battery pack. Not sure if this matters, maybe if it's a EMC related problem, but I hope it isn't!

25

Re: Screen occasionally fails to come on when booting

Try to get a serial console. Figuring out what is going on without it is impossible.
Now I saw it happen once with u-boot too I'm no longer sure what can help it.
I'm thinking of adding a power-cycle to u-boot to see if that matters, but it is a bit wild guessing.