Comment 2 for bug 376383

I get this error when switching monitor configurations also. Just changing the xorg.conf doesn't work for me, I also have to remove ~/.kde/share/config/plasmarc and ~/.kde/share/config/plasma-appletsrc. I simply backed them up as *.singlescreen and *.dualscreen and switch them depending on the configuration.

Could this problem be caused by keeping plasma widgets on the external monitor? Then plasma returns the error when it can't put the widgets off of the screen? Just a shot at the dark, but I have my widgets on the external monitor and I noticed the files I have to remove had the screen positions in them. Perhaps plasma could be forced to display all widgets within the X screen or to have multiple configurations depending on the screen resolution.

Minor issue though, I'm just going to write a script to remove and copy the correct files depending on the setup since I have to do this with the xorg.conf anyways.