Ubuntu
xserver-xorg-video-ati package

  1. Bug #413259
  2. Comment #33

Comment 33 for bug 413259

Revision history for this message
In , Michel Dänzer (michel-daenzer) wrote :

(In reply to comment #7)
> EXANoDownloadFromScreen only helped when no OpenGL app was runnning at least
> for the time I tested. Once I started Auteria (http://www.auteria.com)game in
> the window, the font tearing and artifacts started appearing again.

A similar mechanism as for DownloadFromScreen is used for evicting buffer objects from VRAM, so this indicates that VRAM -> AGP transfers are generally unreliable on your system. One thing I notice in your dmesg is

[35162.662996] [drm] AGP mode requested: 4

Maybe you can try different values for the radeon.agpmode parameter, including 1, 2, not specifying any explicitly or -1 to disable AGP.

If none of that helps, maybe you can try booting the kernel or loading the radeon kernel module with radeon.test=1 and see if that gives any interesting results.

> Also the text inside the game is flickering.

That could be a separate issue.