[Nouveau] [Bug 87819] New: [NVAC] EQ overflowing

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87819

            Bug ID: 87819
           Summary: [NVAC] EQ overflowing
           Product: Mesa
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/DRI/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: eurbah at free.fr

Created attachment 111450
  --> https://bugs.freedesktop.org/attachment.cgi?id=111450&action=edit
Xorg.0.log for X freeze with nouveau from linux-3.19.0-rc2

Normally, I am using Ubuntu utopic (14.10), where module 'nouveau'
systematically crashes after a few minutes, whereas module nvidia from
nvidia-331-updates crashes only after several hours of work.

So, I have filed https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1396840

Inside this Ubuntu bug, Christopher M. Penalver (penalvch) asked me to ensure
the issue is reproducible with the latest mainline kernel.

Currently, this latest mainline kernel is 'linux-3.19.0-rc2'.
With Cinnamon and Firefox, this kernel quickly froze with 'Xorg.0.log'
complaining 'EQ overflowing'.

Inside 'Xorg.0.log', I found :
-  Module nouveau: vendor="X.Org Foundation" compiled for 1.16.0, module
version = 1.0.11
-  'AIGLX: enabled GLX_MESA_copy_sub_buffer'.
So I guess that the 'nouveau' module embedded in 'linux-3.19.0-rc2' is a 3D
driver from the 'Mesa' product (but I am NOT completely sure).

Anyway, I a trying to attach here :

-  Xorg.0.log,

-  kern.log, restricted to 'linux-3.19.0-rc2', with 'Loglevel set to 1' and
'SysRq : Show State'.

I hope that these log files will be useful.

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