Created attachment 133928 [details] dmesg I have video tearing in Gentoo linux with ATI Radeon 9550 256mb (r300), installed driver is xf86-video-ati-7.9.0, same problem with 7.8.0. I have tried to enable 'Option "TearFree" "on"' but that doesn't help. With TearFree enabled i also get complete system freeze on logout from xfce to tty.
Created attachment 133929 [details] glxinfo
Created attachment 133930 [details] xorg.log
What exactly do you mean by "video tearing", and under what circumstances (fullscreen or windowed, which desktop environment / window manager, ...) does it occur? Note that you can enable and disable TearFree at runtime via xrandr --output DVI-0 --set TearFree on # or off / auto
(In reply to Michel Dänzer from comment #3) > What exactly do you mean by "video tearing", and under what circumstances > (fullscreen or windowed, which desktop environment / window manager, ...) > does it occur? > > Note that you can enable and disable TearFree at runtime via > > xrandr --output DVI-0 --set TearFree on # or off / auto That happens everytime when GPU is on some load (i think). When firefox loading some site, desktop and terminal text flickering, also when playing video in vlc or mplayer text also flicker. Im on Gentoo linux running Xfce desktop environment. I have tried to enable DRI3, TearFree, some other options...and nothing helps. I have discovered something: 1600x900 - tearing 1680x1050 - no tearing 1920x1080 - tearing
Also, text flickering in firefox on loading pages...
"text flickering" doesn't sound to me like what "tearing" usually refers to, and your description leaves me unsure what exactly the symptoms look like. It might help if you could provide a video or at least screenshots / photos showing the problem. Does the problem also occur with a different desktop environment / window manager than XFCE, or if you disable / enable compositing in XFCE?
(In reply to Michel Dänzer from comment #6) > "text flickering" doesn't sound to me like what "tearing" usually refers to, > and your description leaves me unsure what exactly the symptoms look like. > It might help if you could provide a video or at least screenshots / photos > showing the problem. > > Does the problem also occur with a different desktop environment / window > manager than XFCE, or if you disable / enable compositing in XFCE? It's weird but it's not visible on screenshot and i have tried to record it but my camera doesn't see it. Everything looks normal on camera. I have tested with manjaro-xfce and kdeneon and it has same issue. On Windows there's no problems. I have tried to enable/disable composing and it's the same.
It seeems like it's about aspect ratio or something like that. 1600x900 - flickering 1680x1050 - no flickering 1920x1080 - flickering There are no problem on windows. I have tried xf86-video-ati-7.10.0, but no changes.
I have fixed this text flickering by lowering monitor 'phase' setting.
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