Am Tuesday 08 March 2011 schrieb Michel DÃnzer: > On Die, 2011-03-08 at 19:40 +1000, Dave Airlie wrote: > > On Tue, Mar 8, 2011 at 7:35 PM, Martin Steigerwald <Martin@xxxxxxxxxxxx> wrote: > > > Its rainy again in Sevilla... > > > > > > Am Sunday 06 March 2011 schrieb Dave Airlie: > > >> > I verified this. Lockup happens with 2.6.38, last one tested > > >> > rc8-gfb62c00, but not with 2.6.37 with exactly same userspace. > > >> > Needed to try the effect several times, as this time the lockup > > >> > with 2.6.38 only happened shortly after the second activation > > >> > of the effect. > > >> > > >> Hmm, can you attach Xorg logs from both? > > > > > > Attached. I have dmesgs available as well. Both kernels are mainly > > > upstream. The 2.6.37 contains some recursive mtime patches from Jan > > > for Ext3/4 that are very likely unrelated. For 2.6.38 I am testing > > > too hibernation patches from Raphael, but the lockup also happened > > > with a plain vanilla 2.6.38 one before. > > > > > >> I'm guessing its either pageflipping or a later kernel allowing > > >> some feature of mesa to be used. > > > > Okay can you try using an xorg.conf with Option "pageflip" "false" > > set in it for the radeon. > > That should be > > Option "EnablePageFlip" "false" So the desktop cube runs absolutely stable with 2.6.38 when I disable page flipping. The hang just happens with enabled page flipping. But beside the desktop cube I had no other hang with page flipping enabled. If its not related to exact gfx chip, it should be easily reproducable: - install kwin - kwin --replace your current window manager - make sure composoting is enabled if it isn't - Ctrl-Alt-F11, maybe hang happens on the second time, not on the first, but hang should happen quite reproducably My compositing settings are: martin@shambhala:~> grep -A 13 "\[Compositing\]" ~/.kde/share/config/kwinrc [Compositing] AnimationSpeed=3 Backend=OpenGL CheckIsSafe=true DisableChecks=true Enabled=true GLDirect=true GLMode=TFP GLTextureFilter=2 GLVSync=true HiddenPreviews=5 OpenGLIsUnsafe=false XRenderSmoothScale=false (I disabled checks whether compositing is performant or safe enough sometime ago, as KWin did not enable compositing otherwise, maybe due to performance reasons. But from what I know OpenGL compositing should be pretty safe on my chipset.) Thanks, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7
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