https://bugs.kde.org/show_bug.cgi?id=484592
--- Comment #3 from Matthias ---
No. I missed to specify that, but the error occurs, when I confirm a
configuration, that doesnt work.
As you can read from my report, I am already in a situation, that prevents me
from using that TV as an external display.
There is no way, to restore its functionality so far as I can see. (Not even
modifiying a text file can help, sincs that one is generated and cannot be
modified seemingly.)
The issue is, that the irrevertable action does not come with the KCM setting
itself, but by using the Fn+F7 menu (dont know its name) with which you
determine the output configuration.
It allows you to choose between several options, among those:
) Switch to internal display
) Switch to external display
) Unify output
) Extend left
) Extend right
If you choose to follow the steps outlined in the original report, and then
choose 'Switch to external display' there is no way of changing the setup
again.
And plugging the device in, will always result in a black screen on both
devices.
Since it is only possible to edit it once plugged in, and plugging it in, it
switches to 'external screen only' - even though that one is in an ill state.
The TV rejects the format, and we seem to have no detection for that.
Another possible solution would be, to never except such an illegal state in
the first place.
My TV does not accept a seemingly plausible resolution (2560 x 1440) and shows
this on its screen.
I dont know, if it reports this back on an API as well.
--
You are receiving this mail because:
You are watching all bug changes.
