Arch Linux

gwpl

Member

From: Warsaw, Poland

Registered: 2010-07-10

Posts: 37

xf86-video-ati Screen tearing (some tiles rendered with offset) especi

Hello, I have problem with my Radeon card in DualHead setup with pivot.

My problem is exactly the same like described here :

https://bugs.freedesktop.org/show_bug.cgi?id=28960

I've met many problems with scrolling and window moving, but not only.
In some apps, like OO-calc I meet wrongly rendered table... like part of screen
copied and pasted with some offset in x and y axes. (Moving cursor refreshes
those fragments, minimising and maximising window also might help... but
enforcing refreshment is - at least - not comfortable).

In my case - ATI HD4350 PCI-E - problem appears when using DualHead mode,
with turned off KDE Composition (OpenGL) in order to use basic rendering
techniques (when using Composition, OpenGL etc. KDE crashes and X-Server
restarts... but when playing OpenGL games like TuxRacer everything is ok).

My setup is to 1900x1200 monitors in Dual Head, one is in pivot.
When using single head setup it is ok.

What I've found, is that
Putting option:

Option      "AccelDFS" "off"

into xorg.conf, helped (even I have PCI-E card), not rendering is correct, but
performance decreased dramatically.

My software version is

$ LC_ALL=en pacman -Qi xorg-server | grep Version
Version        : 1.8.1.902-1

$ LC_ALL=en pacman -Qi xf86-video-ati | grep Version
Version        : 6.13.0-1

How could I help you to fix this?
(btw. Is it right place to file such bug, or is there better?)

Any advice ?