I was able to access the display settings by reseting the KDE configuration.
1) Remove (don't forget to backup) folders ~/.kde, ~/.local and ~/.config .
Removing all of them is necessary :-(
2) Reboot (log out is not enough)
3) Start the display setting :-)
4) Copy configurations of selected apps
Similar for me in Kubuntu 16.10, plasmashell 5.7.5:
1) Search for "display" in application menu
2) Right click -> add to Favorites
3) Remove from Favorites
4) Broken
Has anybody find a solution?
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Public bug reported:
Driver manager shows only "Collecting information about your system". It
happens when started from both"System setting" and console (kcmshell5
kcm_driver_manager). The bug is similar to
https://bugs.launchpad.net/ubuntu/+source/kubuntu-driver-
manager/+bug/1280310 but
** Summary changed:
- kcm_driver_manager: Infinitely shows Collecting information'
+ kcm_driver_manager: Infinitely shows Collecting information
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https://bugs.launchpad.net/bugs/1530523
