--> additionally: If systemsettings --> display is slected, the screen
flickers and falls back to the lowest resolution and the desktop renders
poorly on the external display. After this, the dialog for the display
applet loads but "apply" is not highlighted and therefore, no changed
can be made to take effect. Even launching this in root has the same
effect, no ability to apply changes. One must restart X.
The graphical version of xrandr doesn't seem to load from the menu so I
have yet to try to configure this from the command line. I tried once
and I could never get my external display back up to the 1280x1024.
Renamed /home/{username}/.kde4 to /.kde4old and logged out/in and the
default desktop loaded, and I could copy the "plasma" related from the
old .kde4 config directory to the new one and my desktop was back to the
way I had set it up before this debacle. I add this just in case
someone "ruins" their desktop and wants to restore it. There might be
an easier way by editing some config file.
--
Screen resolution incorrectly detected with external monitor in kde4
https://bugs.launchpad.net/bugs/211682
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