this post was submitted on 15 Jun 2024
30 points (96.9% liked)
Linux
47994 readers
1554 users here now
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Rules
- Posts must be relevant to operating systems running the Linux kernel. GNU/Linux or otherwise.
- No misinformation
- No NSFW content
- No hate speech, bigotry, etc
Related Communities
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
I guess KDE means using SDDM. Would this help ? https://wiki.archlinux.org/title/SDDM#Login_session_appears_on_an_unexpected_display
(Edited for clarity) This was interesting. It gave me arandr to generate a script which is great for lazy me. That script "works" in that it doesn't give any errors when I test it, but it actually doesn't have any effect on the login screen. In fact with more digging i discovered that xrandr just doesn't work at all. I tried setting the display to a lower resolution (default is 3440x1440 so I used 1920x1080) in the control panel to test the xrandr command but xrandr tells me the mode (3440x1440) is not found. I looked again in xrandr and saw that any resolution higher 1920x1080 is not listed any more. I reset the resolution back to 3440x1440 in the control panel then looked in xrandr again and all the expected resolutions are listed again.
xrandr errors when I try to set my display to anything other than the setting it is currently using. Either I'm don't something stupid with the syntax (99.999% confident I'm doing it right), or xrandr is broken with my setup. Maybe kde plasma 6 and wayland is giving me grief here? My PC has an AMD 7900XT GPU, so maybe it just doesn't like my GPU for some reason.
Here is the output from xrandr for my current settings:
Here are the commands I'm using in the Xsetup script.
xrandr is Xorg only, it doesn't work with Wayland. You should be able to make SDDM use your Plasma display configuration - https://wiki.archlinux.org/title/SDDM#Match_Plasma_display_configuration
No clue if that's going to fix your issues, but at least it's supposed to work with Wayland.
Ok that explains it. I tried applying the plasma config earlier. Didn't fix.