[Radeon + KMS + Karmic + X1400] Screen blanks out once in a while

[Killigrew]

Hi

I'm using latest Karmic Build with the Xorg-Edgers PPA
everything's working fine, compiz, 3D games... but
my screen gets black for 1 sec sometimes, mostly while watching videos
oder playing 3D games, on normal Desktop usage, even with compiz enabled,
everything's ok. when it goes black, it looks a bit like shutting off an old crt monitor. Im using a Dell G2410 Monitor via DVI with the Dockingstation of my Thinkpad.
Does anybody know why this is happening, or better how to resolve it?

greetings from germany

killigrew

[agd5f]

Sounds like a display underflow issue. The DisplayPriority option needs to be ported to kms. To test it you can disable kms and add:
Option "DisplayPriority" "HIGH"
to the device section of your config.

[Killigrew]

Hi

didn't help, with kms, without kms and with DisplayPriority High, alway the same Problems.

[madman2k]

are you using Ubuntu Karmic? Check System->Einstellungen->Energieverwaltung.

[Killigrew]

Hi, no, that was not the solution.
When I start crrcsim (an RC Plane Simulator) the screen goes black completely and comes back on only after shutting down the game via alt+F4.

[suokko]

Hi, no, that was not the solution.
When I start crrcsim (an RC Plane Simulator) the screen goes black completely and comes back on only after shutting down the game via alt+F4.

Sounds like program could be using Direct color visual which is known to be buggy. Can you change it to use double buffering from config?

[Killigrew]

The problem occures only if the monitor is connected via dvi.
Via vga there is no flickering or anything at all.

[fa5hion]

Sounds familiar...

https://bugzilla.redhat.com/show_bug.cgi?id=501601

Even clean fedora 11 without fancy KMS stuff suffers this.

Hi

I'm using latest Karmic Build with the Xorg-Edgers PPA
everything's working fine, compiz, 3D games... but
my screen gets black for 1 sec sometimes, mostly while watching videos
oder playing 3D games, on normal Desktop usage, even with compiz enabled,
everything's ok. when it goes black, it looks a bit like shutting off an old crt monitor. Im using a Dell G2410 Monitor via DVI with the Dockingstation of my Thinkpad.
Does anybody know why this is happening, or better how to resolve it?

greetings from germany

killigrew

[Killigrew]

Hi

yes, some of the description are looking familiar indeed

greetings, and thanks for your afford