[Nouveau] [Bug 93629] [NVE6] complete system freeze, PGRAPH engine fault on channel 2, SCHED_ERROR [ CTXSW_TIMEOUT ]

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93629

Dan Moulding <dmoulding at me.com> changed:

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                 CC|                            |dmoulding at me.com

--- Comment #16 from Dan Moulding <dmoulding at me.com> ---
I'm experiencing this bug with kernel 4.4.6 and GK106 (GeForce GTX 645 OEM).

For what it's worth, I've been experiencing this same bug for about two years,
ever since kernel 3.12 (I was on kernel 3.10 prior to that and never
experienced the bug). After each kernel upgrade I've done, I usually test the
built-in firmware to see if the problem is still there. For a while, I thought
the bug was gone as of the 4.4 kernel because I hadn't experienced the problem
for a long time on 4.4 with the built-in firmware. But recently I upgraded my
desktop environment to KDE Plasma 5 and now I've experienced the lockup twice
in less than a 24-hour period.

I just switched back to the proprietary firmware (after moving/renaming the
binary blobs to match the names that the new version of the driver looks for).

I'm willing to test the built-in firmware more, in order to help debug this
longstanding problem. Is there something I can do to help gather more
information (traces, enable debug logging, etc)?

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