On Sat, Jan 19, 2013 at 8:59 AM, Marc Dequènes <d...@duckcorp.org> wrote: > Package: xserver-xorg-video-radeon > Version: 1:6.14.4-6 > Severity: normal > > > Coin, > > At the end of the 2012 year, i upgraded my desktop machine, switching from > Radeon HD 4890 to Radeon HD 6970. Since then i experience tearing, easily > visible when watching videos for example. I was using Unagi at the time, so > i stopped using it which only reduced the effect. > > It is not easy to show the resulting effect so i tried some camera shots > (see attached) using the following video : > http://www.youtube.com/watch?v=ceX18O9pvLs > Unfortunately, it does not seem to show anything proving I'm not drunk. The > other machine i can test on has got a Mobility Radeon X300 and besides some > slowness display it properly ; shots on this machine also show "brightness > blocks", even if less blocks and with a perfect separation line. > > Tell me if i can test anything else.
What are you using to render the videos (Xv, GL)? Did you also change your desktop environment? Note that if you are using a compositing manager (compiz, gnome shell, kwm, etc.), the compositing manager is responsible for preventing tearing by syncing screen updates to vsync. If you are using Xv, the driver's anti-tearing Xv features only work when rendering directly to the display buffer. If you are using a composting manager, the driver renders to an offscreen buffer and the compositor is responsible for updating the display buffer with the new Xv data. Alex -- To UNSUBSCRIBE, email to debian-x-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/cadnq5_ovcej17kinr5uwwdedkv3rf-5mklxcmkoikso0_bl...@mail.gmail.com
