[Bug 94745] New: GPU HANG: ecode 2:0:0x4167ffc1, in Xorg [1188], reason: Ring hung, action: reset

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Mar 29 19:08:57 UTC 2016 

https://bugs.freedesktop.org/show_bug.cgi?id=94745

            Bug ID: 94745
           Summary: GPU HANG: ecode 2:0:0x4167ffc1, in Xorg [1188],
                    reason: Ring hung, action: reset
           Product: DRI
           Version: DRI git
          Hardware: All
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: repairlinux at mail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

> uname -a

>Gateway400vtx
xubuntu 14.04
kernel 4.2.0.34.27 linux generic its wily
kernel 4.2.0.34.39~14.04.1 linux image 4.2.0.34 generic

> dmidecode -s bios-version
>Bios ver. 38.00.35

> lspci 
855gm

> lsmod







Everytime I play a video the GPU hangs.
Sometimes the GPU hangs with other tasks.


>some of my var/log/kern.log.1


kernel: [ 14.393665] [drm] Memory usable by graphics device = 128M
kernel: [ 14.393676] checking generic (e8000000 1e0000) vs hw (e8000000
8000000)
kernel: [ 14.393681] fb: switching to inteldrmfb from VESA VGA
kernel: [ 14.393746] Console: switching to colour dummy device 80x25
kernel: [ 14.394105] [drm] Replacing VGA console driver
kernel: [ 14.411865] [drm] Supports vblank timestamp caching Rev 2
(21.10.2013).
kernel: [ 14.411874] [drm] Driver supports precise vblank timestamp query.
kernel: [ 14.412007] [drm:intel_parse_bios [i915]] *ERROR* Child device config
size 27 is too small.
kernel: [ 14.412217] vgaarb: device changed decodes:
PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+memwns=io+mem
kernel: [ 14.472087] [drm] GMBUS [i915 gmbus panel] timed out, falling back to
bit banging on pin 3
kernel: [ 14.614325] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR*
pipe A underrun
kernel: [ 14.627250] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR*
pipe B underrun
kernel: [ 14.627304] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR*
CPU pipe B FIFO underrun
kernel: [ 14.656777] [drm] initialized overlay support
kernel: [ 14.659290] [drm] Initialized i915 1.6.0 20150522 for 0000:00:02.0 on
minor 0
kernel: [ 14.751833] fbcon: inteldrmfb (fb0) is primary device
kernel: [ 14.752084] Console: switching to colour frame buffer device 128x48
kernel: [ 14.752122] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
kernel: [ 14.752126] i915 0000:00:02.0: registered panic notifier



and some more...



[ 22.812443] [drm] GMBUS [i915 gmbus panel] timed out, falling back to bit
banging on pin 3
[ 22.846745] [drm:intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* pipe A
underrun
[ 22.847046] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe
B FIFO underrun
[ 22.855890] [drm] initialized overlay support
[ 22.855989] [drm] Initialized i915 1.6.0 20150522 for 0000:00:02.0 on minor 0



Some more...




usbcore: registered new interface driver snd-usb-audio
[ 361.000150] [drm] stuck on render ring
[ 361.003143] [drm] GPU HANG: ecode 2:0:0x7c63ffca, in Xorg [1187], reason:
Ring hung, action: reset
[ 361.003151] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 361.003155] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 361.003159] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 361.003163] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[ 361.003168] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 361.008378] drm/i915: Resetting chip after gpu hang
[ 361.008448] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -19



[drm:i9xx_check_fifo_underruns [i915]] *ERROR* pipe B underrun
[ 6238.095366] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[ 6238.178488] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[ 6478.955755] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[ 6479.106324] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[10826.977994] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[10829.110759] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[11516.335599] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[11516.402117] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[11516.501867] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[11516.565194] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[11516.801150] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[11518.994834] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[11526.743669] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[11526.943174] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[11529.385355] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[11537.401099] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[11537.433434] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[14042.976962] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[14044.995527] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[14114.372307] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe A FIFO underrun
[14114.423848] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[15027.000095] [drm] stuck on render ring
[15027.003109] [drm] GPU HANG: ecode 2:0:0x4167ffc1, in Xorg [1188], reason:
Ring hung, action: reset
[15027.003116] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[15027.003121] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[15027.003125] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[15027.003129] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[15027.003134] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[15027.008394] drm/i915: Resetting chip after gpu hang
[15027.008462] [drm:i915_reset [i915]] *ERROR* Failed to reset chip: -19 




Also if helpful, I tried to USB boot Ubuntu 14.04 and it failed to load.

First 8 errors showed up mostly pipe A or B/fifo/cpu
The very first error was a PVS or PVC then after it the pipe errors showed.

The last few lines said:

[15.284012] kernel offset disabled
[15.284012] --- [end kernel panic - not syncing: VFS: unable to mount root fs
on unknown-block [2.0]
[25.332033] random: nonblocking pool is initialized

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