[Nouveau] [Bug 37445] Nouveau regularly reports the TRAP_VFETCH FAULT errors.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=37445

--- Comment #8 from Kevin N. <vekinn at gmail.com> 2012-03-12 21:30:34 PDT ---
I also run into these errors.  They only occur after I reclock the card to any
performance level above 1. If I then run Heroes of Newerth (Opengl game)  I run
into slowdowns that will eventually lock the system up with this message in log
repeatedly.  The messages and slowdowns stop if I manage to kill X before the
system becomes unresponsive.  Running the game at the default performance level
works fine.

01:00.0 VGA compatible controller: nVidia Corporation G96 [GeForce 9600M GT]
(rev a1)

Mar 11 19:23:46 [kernel] [55207.554706] [drm] nouveau 0000:01:00.0: PGRAPH -
TRAP_VFETCH FAULT
Mar 11 19:23:46 [kernel] [55207.554724] [drm] nouveau 0000:01:00.0: PGRAPH -
TRAP_VFETCH 00f00000 0000fe0c 00000000 00000000
Mar 11 19:23:46 [kernel] [55207.554726] [drm] nouveau 0000:01:00.0: PGRAPH -
TRAP
Mar 11 19:23:46 [kernel] [55207.554730] [drm] nouveau 0000:01:00.0: PGRAPH - ch
4 (0x00040f0000) subc 5 class 0x8297 mthd 0x0f04 data 0xbef727ba
Mar 11 19:23:46 [kernel] [55207.554743] [drm] nouveau 0000:01:00.0: VM: trapped
read at 0x0000000000 on ch 4 [0x000040f0] PGRAPH/VFETCH/00 reason:
PT_NOT_PRESENT

libdrm mesa xf86-video-nouveau and kernel current as of 3 PM 02/19/2012 PST

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