https://bugs.kde.org/show_bug.cgi?id=510432
Bug ID: 510432
Summary: A way to reset display configurations
Classification: Plasma
Product: KScreen
Version First 6.5.80
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: common
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Hi there :)
Last year, I ran into an issue where the selection of a resolution for my TV in
KScreen resulted in the device being entirely unusable for this installation.
There was no way discovered, despite multiple issues and conversations with
people on different Matrix channels, to restore its functionality as an
external display.
Here is the issue, if details are interesting:
https://bugs.kde.org/show_bug.cgi?id=484592
Now, I managed to get myself into a similar situation, just that this time it's
not the OSD menu that caused the situation, but some magic.
I had the mouse cursor in the bottom right of the screen when I plugged in the
display, and as soon as I realized that I chose the problematic resolution that
is not supported by my TV, my hand slipped, and I accidentally did a left
click.
I don't know how it managed to reach the confirmation box, which was seated
right in the middle of the screen, but apparently it did.
So, my real issue is that there is no way to restore the default configuration
for said display (that would just select the highest resolution, which one is
supported) by *ANY* means possible.
So far as I know, does KWin violate the fundamental UNIX principle that
everything is editable in the form of a text file. Even worse, is that the file
in question, kwinoutputconfig.json, does not even say that.
It just rests there, innocently, and pretends to be editable like every other
file.
Changing it does not do anything, and without asking the actual maintainers,
there is no way anyone would ever know; this file is not even meant to be
edited by hand.
It's auto-generated somehow, and I don't know how I could possibly cause an
edit, since the TV is not even recognized anymore by KScreen, when it's
connected.
I tried with remote desktop solutions, to edit the setting this way, but not
even that is possible.
Currently, there is no way to go back to a working state, without having to
reinstall the entire operating system.
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