Problem with xorg ati driver (open source "ati")

[Alex Deucher]

On 10/16/07, Jussi Schultink <jussi01 at gmail.com> wrote:
> Hi,
>
> Im currently having a bit of a problem with the ati driver as included
> with ubuntu gutsy atm.
>
> My problem is that when I set the reolution of my screen to its native
> resolution (1680x1050)(22" LG L222Ws) it appears that the driver
> thinks the screen is 2x the size it actually is, and so, large
> portions of the desktop appear to be outside the viewable area.  I
> have tried using the exact xorg.conf that was/is working with the
> earlier earlier driver. The driver that works is the
> xserver-xorg-video-ati-1:6.6.3-2ubuntu6 . anything newer than that has
> the issue.
>
> You can find various extra details here:
> https://bugs.edge.launchpad.net/ubuntu/+source/xorg/+bug/147329

according to the output of xrandr, you are running 1440x900, not 1680x1050.
xrandr --output VGA-0 --mode 1680x1050
or
xrandr --output VGA-0 --auto
should do the trick.  1680x1050 seems to be the preferred mode of your
monitor, so I'm not sure why it's not being chosen by default.

Alex