On Mit, 2011-10-26 at 14:16 +0200, Michal Suchanek wrote: > 2011/10/26 Michel Dänzer <[email protected]>: > > On Mit, 2011-10-26 at 12:05 +0200, Michal Suchanek wrote: > >> 2011/10/26 Michel Dänzer <[email protected]>: > >> > On Die, 2011-10-25 at 20:41 +0200, Michal Suchanek wrote: > >> >> 2011/10/25 Michel Dänzer <[email protected]>: > >> >> > On Mon, 2011-10-24 at 23:23 +0200, Michal Suchanek wrote: > >> >> >> With this patch it should be at least possible to turn off all this > >> >> >> when it does not work. > >> >> > > >> >> > Exactly. So, have you had a chance to try it? > >> >> > >> >> I installed the packages I built yesterday. The patch has no visible > >> >> effect. > >> > > >> > Well, I do see an effect in the log file: > >> > > >> > [2558366.995] (==) RADEON(0): SwapBuffers wait for vblank: disabled > >> > > >> > > >> >> > Does it address your bug report? > >> >> > >> >> I am not quite sure. > >> > > >> > The above means the thing the bug report complains about being > >> > impossible to disable is disabled. > >> > >> Still it is disabled without the patch too, which it supposedly should not. > > > > I don't see how that can be the case with a driver built from unpatched > > upstream, without (the equivalent of) Option "SwapbuffersWait" "off". > > I don't have that in Xorg.conf and the only patch Ubuntu adds fixes up > the -background none option. > > So I would suspect that in this particular driver snapshot vblank is > broken in entirely new way which completely evades whatever the patch > is doing.
Option "SwapbuffersWait" has nothing to do with sync to vblank (which is controlled via the driconf setting vblank_mode). It only controls whether tearing is avoided for DRI2 buffer swaps without sync to vblank. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Debian, X and DRI developer _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
