Thank you for taking the time to report this bug and helping to make
Ubuntu better. Please attach your X server configuration file
(/etc/X11/xorg.conf) and X server log file (/var/log/Xorg.0.log) to the
bug report as individual uncompressed file attachments using the
"Attachment:" box below. Could you please also try to run without any
/etc/X11/xorg.conf and let Xorg autodetect your display and video card?
Please also attach the /var/log/Xorg.0.log from this attempt. Thanks in
advance.
Please also attach the output from "xrandr".
Most probably the driver is seeing a second "ghost" screen that is using
as primary, cloning the image to the secondary (and only real) screen.
Try disabling the second output with "xrandr --output XXX --off"
** Changed in: xserver-xorg-video-ati (Ubuntu)
Sourcepackagename: xserver-xorg-driver-ati => xserver-xorg-video-ati
Assignee: (unassigned) => Tormod Volden (tormodvolden)
Status: New => Incomplete
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[gutsy] ati open source driver issues with external monitor
https://bugs.launchpad.net/bugs/156550
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