Nouveau - Feb 2013 - [Bug 58378] Distorted graphics on NVIDIA GeForce 8400M G after upgrade the kernel to 3.7.0 version

https://bugs.freedesktop.org/show_bug.cgi?id=58378

--- Comment #8 from nemasu at gmail.com ---
I am having the same problems post kernel version 3.7.0 with a GeForce 8800
GTS. Even glxgears will lock up.

I get a ton of these messages:
[   83.399004] nouveau  [   PFIFO][0000:01:00.0] CACHE_ERROR - Ch 2/3 Mthd
0x108c Data 0x2036652f

with the occasional:
[   83.418650] nouveau E[  PGRAPH][0000:01:00.0] TRAP_MP_EXEC - TP 4 MP 1:
INVALID_OPCODE at 07f4d8 warp 2, opcode 0423c788 10000811
[   83.418659] nouveau  [  PGRAPH][0000:01:00.0]  TRAP
[   83.418663] nouveau E[  PGRAPH][0000:01:00.0] ch 4 [0x0027948000] subc 3
class 0x5097 mthd 0x0f04 data 0x00000000
[   83.418672] nouveau E[     PFB][0000:01:00.0] trapped read at 0x0000000000
on channel 0x00027948 PFIFO/PFIFO_READ/SEMAPHORE reason: DMAOBJ_LIMIT
[   83.431368] nouveau E[  PGRAPH][0000:01:00.0] TRAP_MP_EXEC - TP 4 MP 1:
INVALID_OPCODE at 07f4d8 warp 2, opcode 0423c788 10000811
[   83.431376] nouveau  [  PGRAPH][0000:01:00.0]  TRAP
[   83.431379] nouveau E[  PGRAPH][0000:01:00.0] ch 4 [0x0027948000] subc 3
class 0x5097 mthd 0x0f04 data 0x00000000

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https://bugs.freedesktop.org/show_bug.cgi?id=58378

--- Comment #9 from Carolien <BlackberryQueen at live.nl> ---
Same here with nVidia GeForce 8400M G videocard in an Acer Aspire 7520 G laptop
running Ubuntu 12.10 64bit AMD64. My first impression was a heat problem due to
dust. So i cleaned the laptop fan and refitted the heatsink and heatpipes with
new thermal (silver) contact paste, but the video-error reoccurs. When only two
webpages are opened: no problem. Starting a Youtube video: screen is a mass,
like Henrique Dias reported.

Is there a relation to the reported failure of nVidia GeForce 8 series??
http://news.cnet.com/8301-13924_3-10037632-64.html


Carolien.

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