Bug#488277: xserver-xorg-video-radeon: No longer uses correct resolution when a second screen is connected

[Alex Deucher]

On Fri, Jun 27, 2008 at 10:35 AM, Torquil Macdonald Sørensen
<torquil at gmail.com> wrote:
> Package: xserver-xorg-video-radeon
> Version: 1:6.8.192-1
> Severity: normal
>
> Up until the last few days, when I started my laptop (1400x1050) with an
> external screen (LCD 1280x1024), X would automatically lower the resolution so
> that it was appropriate for the external screen, instead of the 1400x1050 it
> normally uses on my laptop (IBM T24 with ATI Radeon Mobility 9600). It doesn't
> do that any more.

This is an xserver change.

>
> Now I get a cropped 1400x1050 on the external LCD instead. E.g. I can only see
> the upper half of the KDE panel on the external screen. The lowest part of the
> desktop is not shown.

The xserver mode default mode chooser has changed.  Nothing to do with
the driver.  removing the "Modes" line from your config may fix it:
Modes "1400x1050" "1280x1024" "1280x960" "1024x768" "800x600"
"700x525" "640x480"

>
> When I try to lower the resolution to 1280x1024 using kcontrol, the external
> screen becomes black and a 1280x1024 image is shown only on the laptop screen.
>

kcrontrol is probably not xrandr 1.2 compliant and probably uses the
old xrandr 1.0 API which only affect one of the outputs and leads to
problems on multi-head systems.

Alex