[Nouveau] [Bug 79518] nouveau causes lockup and reboot on GT215

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=79518

--- Comment #5 from Adam Borowski <kilobyte at angband.pl> ---
Created attachment 122779
  --> https://bugs.freedesktop.org/attachment.cgi?id=122779&action=edit
including boot with nouveau.debug=DRM=debug drm.debug=0xe

> Was there anything before the tlb flush timeout error?

Nothing since boot.  I don't know what messages are interesting to you, so
here's a dump since boot, this time with nouveau.debug=DRM=debug drm.debug=0xe

> Unfortunately I have no clue why those timeouts happen... basically it's an indication that the GPU is "done".

I believe my hardware itself is ok, at least as in "never had any issue with
the proprietary driver".  Those bastards dropped support for GT215 though...

> You could disable GL stuff for chromium, either launching it with LIBGL_ALWAYS_SOFTWARE=1 or by disabling stuff in about:flags.

I don't care about chromium, I got a better browser :p  But whatever GL calls
it does can be invoked by some other program later...

> Perhaps the memory comes up in a (slightly) funny state? You could try reclocking it and see if that improves matters, have a look in /sys/kernel/debug/dri/0/pstate for the available perf levels, you can echo those values in to change states.

What values would you suggest?  I'm afraid I did not find documentation that's
idiot-proof -- and I sadly got exactly 0 clue about this kind of stuff so I
require some handholding to give you useful debug info.

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