Hi all,

I'm pretty new to KDE having only used it for a couple of months now. I've been running KDE 4.2 on openSUSE for a little while now successfully on my laptop. When I would dock my laoptop, I have two Flat panels hooked up to the VGA and HDMI outputs. Previously, when docked, the laptop would display POST information via the HDMI connected monitor and SUSE would begin to load there. When kdm would take over, things would switch to the VGA connected display (this worked fine and I just never looked into how to get it to stay with the HDMI display). Once logged into KDE (and still on the VGA display) I'd use a shell script to have xrandr configure the display how I want (most commonly with the HDMI left-of VGA).

This all worked well until a couple of days ago I decided to roll up to the latest versions available on the KDE42 and online update repositories. Since then, kdm always loads on the laptop (LVDS) display even when docked with the lid closed. When logged in and attempting to use xrandr to reconfigure my display with:

xrandr --output VGA --mode 1280x1024 --output HDMI-1 --mode 1280x1024 --left-of VGA --output LVDS --off

I get the error message:

xrandr: cannot find crtc for output

I can work around this by first:

xrandr --output VGA --mode 1280x1024 --output HDMI-1 --mode 1280x1024 --output LVDS --off

and then repeating the xrandr with the VGA output.

I didn't need to do this extra step before and I'm fairly certain that whatever is causing this is also causing kdm to always load on the LVDS display as well.

Does anyone have some tips that might help me track down my problem?

Thanks all for any help!

-Steve

For inside the KDE session at least, you will need to configure multi screen support in System Settings > Display.