monline

Some (maybe all?) of the "System settings" configuration screens in KDE are implemented in Python scripts (found in /var/lib/python-support/python2.5/). It might happen that one of the configuration screens does not load, instead you get some error messages complaining that something failed. In my example the "Monitor and Display" configuration failed to load and as such, I could not change resolution.

The "Monitor and Display" config can be manually started with following command line:

This will eventually start the Python script at /var/lib/python-support/python2.5/displayconfig.py. The advantage in starting the script from the command line is that you can see all the error output of the Python script.

In my case the problem was a corrupted config file in the home directory of the user. The config of the "Monitor and Display" preferences is stored here in $HOME/.kde/share/config/displayconfigrc. Once I deleted this file, the "Monitor and Display" configuration screen loaded without any problem.