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[jan <jan-ubuntu@xxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-ati

After the upgrade to Lucid, certain games did not play anymore on my Compaq EVO n620c.
The screen became black, and the computer thus unusable.

Reprudicing it started when I realized that the same problem appeared when setting 640x480 resolution from the monitor settings menu.
Per-lucid releases did either NOT allow 640x480 resolution or a setting that I so far haven't found.
I found no 640x480 resolution that the used monitor supports.
Adding a Monitor entry restricting the horizontal sync range, the problem was mitigated.
The game now plays well at 800x600 resolution: the lowest attempted.

This is a nasty regression problem, that took me a day to figure out.

** Affects: xserver-xorg-video-ati (Ubuntu)
     Importance: Undecided
         Status: New

-- 
After Lucid upgrade, invalid LVCD modes shown
https://bugs.launchpad.net/bugs/590948
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