[Bug 32988] xorg sets wrong resolution when 2 monitors are connected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=32988

Alex Deucher <agd5f at yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Driver/Radeon               |Server/general
         AssignedTo|xorg-driver-ati at lists.x.org |xorg-team at lists.x.org

--- Comment #5 from Alex Deucher <agd5f at yahoo.com> 2011-01-11 10:43:02 PST ---

This is an xserver issue rather than a driver issue:
[    29.088] (II) RADEON(1): Using fuzzy aspect match for initial modes
[    29.088] (II) RADEON(1): Output DVI-0 using initial mode 640x480
[    29.088] (II) RADEON(1): Output DVI-1 using initial mode 640x480

The xserver comes up by default in clone mode and it tries to match all
attached heads to the largest common mode supported by both.  In your case,
that ends up being 640x480.  Most desktop managers will remember your xrandr
settings if you use their tools to configure your monitors.  You might try the
kde randr applet.  Alternatively, you can manually configure the preferred
modes for your monitors in your xorg.conf.  See section III of this page:
http://wiki.debian.org/XStrikeForce/HowToRandR12

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