[Intel-gfx] drm stuck on render ring starting xlock on a x201 using SNA

[Chris Wilson]

On Sun, Jan 11, 2015 at 07:06:19PM -0500, Charles Devereaux wrote:
>    Hello
> 
>    Aftertrying to leave an xlock started with  xlock -nolock +use3d -mode
>    gears, I get a drm stuck on render ring error.
>    The funny thing is this problem did not happen on the exact same thinkpad
>    x201 laptop using an identical xorg.conf but with a debian jessie i386  (I
>    did a clean reinstall of debian jessie amd64)
> 
>    xorg.conf contains:
>    Section "Device"
>        Identifier  "i950"
>        Driver      "intel"
>        BusID       "PCI:0:2:0"
>        Screen 0
>        Option    "AccelMethod"    "SNA"
>        Option  "FallbackDebug" "true"
>    EndSection
> 
>    I'm using kernel  3.14.25, and I saved /sys/class/drm/card0/error and
>    gpucrash in case it's not a know bug.
>    Any suggestion?

It's impossible to tell without the complete information
(/sys/class/drm/card0/error, dmesg and Xorg.0.log) but it sounds like
the kernel bug: https://bugs.freedesktop.org/show_bug.cgi?id=87780
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre