[Nouveau] [Bug 77230] [NV4B] NV40 PGRAPH "unknown bits" - windows render in white

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77230

Troy <guinness.meredith at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |NOTABUG

--- Comment #3 from Troy <guinness.meredith at gmail.com> ---
Well it took a while but I eventually discovered Video Memory Test (VMT) which
is like memtest but for video ram.  I downloaded the ISO version (VMTCE) from
sourceforge:

http://sourceforge.net/projects/vmtce/files/

After completing the test there were 223,834 errors.

Nice... not.

Further investigation suggests nVidia might have switched the type of solder
the year after my card was manufactured, due to high failure rates in
notebooks:

http://www.tgdaily.com/hardware-features/39045-nvidia-gpu-failures-caused-by-material-problem-sources-claim

Anyway, my problem is indeed a hardware error, most likely all those solder
joints have micro fractures.

Thanks for pointing me in the right direction.

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