Public bug reported:
Upgrading to kernel 3.5.0-22 from 3.5.0-21 has broken my multiple
monitor setup using the open-source radeon driver. My DVI monitor
suffers from display corruption when booting, and can only run in mirror
mode with my second VGA monitor. Plugging in only one monitor fixes the
problem, but only allows the one display to be used.
Booting into kernel 3.5.0-21 fixes all issues and everything operates
normally.
I believe this is related to kernel changes in the DRM/radeon drivers
made upstream and first spotted in xorg-edgers a while back in #1093753,
although the proposed commit patch there did not resolve all issues.
** Affects: xorg-server (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1105510
Title:
[radeon] regression from 3.5.0-22 from 3.5.0-21 for multi-monitor
setups
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