[Nouveau] [Bug 91373] Nouveau fills kern.log with gigabytes of data when molecule screensaver is ran

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91373

--- Comment #1 from Olivier Diotte <vhann3000+freedesktop at gmail.com> ---
Looks much better on v3.19.

The computer didn't lock up after 3 xscreensaver-command -lock.

Interestingly though, on the HDMI screen, the first time, the molecule wasn't
rotating and error messages appeared. This was in dmesg:

[  131.177645] nouveau E[   PFIFO][0000:01:00.0] SCHED_ERROR [ CTXSW_TIMEOUT ]
[  131.177651] nouveau E[   PFIFO][0000:01:00.0] PGRAPH engine fault on channel
7, recovering...
[  160.403618] nouveau E[molecule[2408]] failed to idle channel 0xcccc0000
[molecule[2408]]
[  175.398186] nouveau E[molecule[2408]] failed to idle channel 0xcccc0000
[molecule[2408]]

Didn't get any error since, still testing.

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