[Nouveau] [Bug 109654] New: Nouveau picks bad mode setting 640x480 resolution

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109654

            Bug ID: 109654
           Summary: Nouveau picks bad mode setting 640x480 resolution
           Product: xorg
           Version: 7.7 (2012.06)
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: dan1espen at gmail.com
        QA Contact: xorg-team at lists.x.org

This has been discussed on the Nouveau mailing list.

When running this command:

xrandr -s 640x480

Nouveau only fills the screen horizontally, vertically it leaves 2/3s of the
screen at the top and bottom unused.  This makes this mode unusable.

Adding -r 75 to the above command fixes the problem.

Perhaps the higher frequency mode should be used by default.

The NVIDIA drivers do not have this problem, the screen is always filled.

This bug breaks games like "lbrickbuster2" which want to run full screen at
640x480.

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