[Nouveau] [Bug 25658] Move to loadable firmware breaks suspend on nVidia 9800M

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25658





--- Comment #4 from Xavier <shiningxc at gmail.com>  2009-12-15 16:21:29 PST ---
I also suspected loadable firmware initially, but then I quickly moved to
suspecting all the ttm changes.
It's the last merge that broke it for me :
commit 12b59e64a4df9f4298a2abb8b331074adea113ed

curro pointed me to the following fix on dri-devel by airlied :
http://www.mail-archive.com/dri-devel@lists.sourceforge.net/msg45533.html

It seems that fixed suspend for me. But I still have troubles resuming, I get
pixmap corruption problem in X. After reloading X, it is fine.

However, there is also a known bug in nouveau code, fixed by curro :
http://lists.freedesktop.org/archives/nouveau/2009-December/004266.html

This last patch seems to correct a very obvious bug/overlook. But it causes
other problems for me when resuming :
Dec 15 18:50:06 xps-m1530 kernel: [   42.706924] [drm] nouveau 0000:01:00.0:
Reinitialising engines...
Dec 15 18:50:06 xps-m1530 kernel: [   42.709976] [drm] nouveau 0000:01:00.0:
Restoring GPU objects...
Dec 15 18:50:06 xps-m1530 kernel: [   42.742509] [drm] nouveau 0000:01:00.0:
Restoring mode...
Dec 15 18:50:06 xps-m1530 kernel: [   42.742513] [drm] nouveau 0000:01:00.0: bo
ffff88011d2b1400 pinned elsewhere: 0x00000002 vs 0x00000004
Dec 15 18:50:06 xps-m1530 kernel: [   42.746882] [drm] nouveau 0000:01:00.0: bo
ffff88011d2b1400 pinned elsewhere: 0x00000002 vs 0x00000004
Dec 15 18:50:06 xps-m1530 kernel: [   42.746885]
[drm:drm_helper_resume_force_mode] *ERROR* failed to set mode on crtc
ffff88011c51c000

The screen stays black. Reloading nouveau blindly fixes it though.
Some other times, resuming caused hardlock, but I suspect it's related to this
same bo/ttm problem.

Just give me another year and I might find something :)


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