Bug#595124: workaround and more info about resume troubles on ATI Radeon RV250
On Thu, Feb 10, 2011 at 01:58:43PM +0100, Holger Levsen wrote:
> reassign 595124 linux-2.6
> forwarded 595124 https://bugzilla.kernel.org/show_bug.cgi?id=16140
> found 595124 2.6.37-1~experimental.1
> found 595124 2.6.32-30
> thanks
>
> Hi,
>
> I've also seen this bug, also with pm-suspend.
>
> ~$ lspci -nn|grep VG
> 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Radeon RV250 [Mobility FireGL 9000] [1002:4c66] (rev 02)
>
> And with these two kernel images:
>
> ii linux-image-2.6.32-5-686 2.6.32-30 Linux 2.6.32 for modern PCs
> ii linux-image-2.6.37-trunk-686 2.6.37-1~experimental.1 Linux 2.6.37 for modern PC
>
> But there is a workaround which makes resume work for ~90% of the cases:
> turning agpmode off. To achieve that, I've put the following into
> /etc/modprobe.d/radeon-kms.conf
>
> options radeon modeset=1 agpmode=-1
[..]
> Just for completeness: with 2.6.32 (using agp) glxgears showed 2421 frames/s,
> with 2.6.37 using agp 2685 FPS and without agp still 1800 FPS, with is fast
> enough for youtube in fullscreen :-) Resume also worked with 2.6.32 and without
> KMS, but then things were slooow. (830 FPS).
Hi Sebastian/Holger,
according to the upstream bug https://bugzilla.kernel.org/show_bug.cgi?id=16140 this
should have been fixed with
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=45171002b01b2e2ec4f991eca81ffd8430fd0aec
This fix was merged into 3.2.35 and is thus part of the Wheezy kernel. Can either of you
confirm that it's working now?
Cheers,
Moritz
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