KDE

5234 readers

141 users here now

KDE is an international technology team creating user-friendly free and open source software for desktop and portable computing. KDE’s software runs on GNU/Linux, BSD and other operating systems, including Windows.

Plasma 6 Bugs

If you encounter a bug, proceed to https://bugs.kde.org, check whether it has been reported.

If it hasn't, report it yourself.

PLEASE THINK CAREFULLY BEFORE POSTING HERE.

Developers do not look for reports on social media, so they will not see it and all it does is clutter up the feed.

founded 1 year ago

MODERATORS

[email protected]

Trying to find a solution to a use case where I need to disable certain display outputs or focus one single display temporarily. (lemmy.world)

submitted 1 week ago* (last edited 1 week ago) by [email protected] to c/[email protected]

7 comments fedilink hide all child comments

I have a use case where I would like to play games on the TV in my living room.

For this I have purchased a HDMI KVM Extender which allows me to have an HDMI signal connected to my TV. This is working great, but the only problem is that i would like to disable the other outputs when I am not using them, mostly for ease-of-use with windows not opening on the monitors in the office while I am in the TV Room.

I have tried using kscreen-doctor with the command "kscreen-doctor output.HDMI-A-1.disable" which works, but wreaks havoc on the display configuration in KDE Plasma on my desktop.

One solution I have found is to simply pull out the display connectors that I don't need on the PC, which works as intended. Only problem is that its a bit brute force. I had hoped to find something with similar functionality but controlled from the system. IE. a script, shortcut or similar.

Asking here in hopes that someone can suggest a way to get this to work!

System info:

Operating System: Fedora Linux 40
KDE Plasma Version: 6.1.4
KDE Frameworks Version: 6.5.0
Qt Version: 6.7.2
Kernel Version: 6.10.8-200.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 5900X 12-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: AMD Radeon RX 7900 XTX

EDIT: OMG, this solution was so simple, but completely just worked. Just mirrored the main display and fixed individual refresh rates, even works when turning the extender on and off. Major thanks to @pandapoo for the idea

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 3 points 1 week ago

I do this with a projector.

When the projector is off, it is not detected by my GPU. When it is on, it is.

I simply configured the display config while the projector was on, with disabled monitors.

When the projector is turned off, it disappears, which triggers the normal, no-projector config.

My monitors now go blank, and come back, depending on whether the projector is on.