[Nouveau] [Bug 50121] [Regression] Since kernel v3.5 several cards fail to resume, introduced by: 'convert to exec engine, and improve channel sync'

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=50121

--- Comment #59 from Mr-4 <mr.dash.four at googlemail.com> ---
(In reply to comment #58)
> Created attachment 73597 [details] [review]
> Backport for 3.5 (and may be 3.6) - fixed again
I have to say, I didn't expect for this to be fixed, but this time it looks as
though this nasty bug is being squashed. I have been doing hibernate/restore
like mad (a couple of times a day) for the past week and not a single glitch,
not one!

My one-and-only gripe with this (and it really is a minor one, given the
circumstances) is that since I used a "fork" of the mainstream driver from
Martin Peres (mupuf) at gitorious
(http://gitorious.org/linux-nouveau-pm/linux-nouveau-pm/commits/thermal) to
take advantage of the automatic fan management so that I don't have to execute
"echo 40 > /sys/class/drm/card0/device/pwm0" every time I come out of
hibernation and stop my nvidia fan wailing like a jet engine, this is still not
implemented in the main stream driver code.

I used to have this so that when I come out of hibernate the automatic fan
management takes over and reduces my fan speed according to the current
temperature of the video card. It worked a treat, but I don't seem to be
getting this any more and applying the patch which fixed the above bug is not
possible against Martin's fork, unfortunately.

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