You have been subscribed to a public bug:
The radeon driver randomly blanks the screen (connected via DVI),
especially while working with Thunderbird. If it happens, it usually
happens several times in a row, and then it is good again for a day or
so.
I do have Option "DisplayPriority" "HIGH" in my xorg.conf, and
radeon.modeset=0 in my boot params.
These settings seems to have helped somewhat (before I had them, the
incident occured much more frequently), but didn't fix it completely.
My card is a Radeon RS690 (X1200 Series):
> lspci | fgrep VGA
01:05.0 VGA compatible controller: ATI Technologies Inc RS690 [Radeon X1200
Series]
3. What I expect to happen:
The screen should not blank while I'm actively working with the computer
4. What does happen:
The screen blanks, even while I am active
** Affects: xserver-xorg-video-ati (Ubuntu)
Importance: Undecided
Status: New
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radeon driver "randomly" blanks screen on DVI
https://bugs.launchpad.net/bugs/959775
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Packages, which is subscribed to xserver-xorg-video-ati in Ubuntu.
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