[Bug 76956] Graphical bug and crash [drm] stuck on render ring

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76956

fuujuhi <fuujuhi-ml1 at noekeon.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|WORKSFORME                  |---

--- Comment #6 from fuujuhi <fuujuhi-ml1 at noekeon.org> ---
Hi,

I just had the exact same problem. Actually twice in a row it seems.
The second one the pc recovered. It took some time to accept CTRL-ALT-F1, after
log in, top shows some activity, and finally I could CTRL-ALT-F7 back to the
GUI.

dmesg shows:

[ 1475.042636] [drm] stuck on render ring
[ 1475.042639] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[ 1475.042639] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[ 1475.042639] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[ 1475.042639] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[ 1475.042640] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.

I have the error file, I'll try to attach it.

Btw, this is on a DELL Latitude E5430, running Ubuntu 14.04 Trusty Tahr
(AMD64), with unity 3D. Recently I installed latest XBMC 13.0 Gotham (don't
know if that's related, but there is v-sync tear regression that appears in
XBMC 13 - but I don't have the TearFree option in xorg.conf afaics).

$ inxi -Gx
Graphics:  Card: Intel 3rd Gen Core processor Graphics Controller bus-ID:
00:02.0 
           X.Org: 1.15.1 driver: intel Resolution: 1600x900 at 60.0hz,
1600x1200 at 60.0hz 
           GLX Renderer: Mesa DRI Intel Ivybridge Mobile GLX Version: 3.0 Mesa
10.1.0 Direct Rendering: Yes

$ lspci -v
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09) (prog-if 00 [VGA controller])
    Subsystem: Dell Device 053c
    Flags: bus master, fast devsel, latency 0, IRQ 44
    Memory at f6400000 (64-bit, non-prefetchable) [size=4M]
    Memory at e0000000 (64-bit, prefetchable) [size=256M]
    I/O ports at f000 [size=64]
    Expansion ROM at <unassigned> [disabled]
    Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
    Capabilities: [d0] Power Management version 2
    Capabilities: [a4] PCI Advanced Features
    Kernel driver in use: i915

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