I recently did a clean kde neon install on one of my laptops. Now I’m experiencing an issue with X11 on Plasma 6.3. Wayland works sometimes but doesn’t work for all the apps I need which is why I prefer to use X11. I had kde neon on my old laptop that was working just fine with the Ubuntu 22.04 based Plasma 6.2. Now with the newer Plasma 6.3 X11 doesn’t seem to start properly (or at all) on boot. When I log in into X11, I can open desktop but not all apps seem to work, and if they do open they usually launch in small non-scalable windows and don’t appear on the taskbar. Sometimes the system just straight up freezes completely.
From journalctl, I’m able to see the following error message:plasma-kwin_x11.service: Failed with result 'exit-code'.
Any ideas?
Little more specs:
Justin
June 4, 2025, 12:47am
3
If you can please provide more context around this entry, it will help with identifying why it exited.
For example you can do journalctl -b -u plasma-kwin_x11 to get all logs from that service for the current boot.
Hi!
I did grep x11 on the journalctl and found the following:
kesä 03 22:08:55 eemil-kde sddm-greeter-qt6[979]: Reading from "/usr/local/share/xsessions/plasmax11.desktop"
kesä 03 22:08:55 eemil-kde sddm-greeter-qt6[979]: Reading from "/usr/share/xsessions/plasmax11.desktop"
kesä 03 22:24:55 eemil-kde sudo[3575]: eemilpietila : TTY=pts/1 ; PWD=/home/eemilpietila ; USER=root ; COMMAND=/usr/bin/cat /usr/bin/startplasma-x11
kesä 03 22:28:29 eemil-kde google-chrome-stable[2008]: [2053:2093:0603/222829.816724:ERROR:ui/base/x/x11_software_bitmap_presenter.cc:150] XGetWindowAttributes failed for window 20971547
kesä 03 22:42:54 eemil-kde kernel: pci 0000:00:14.2: [8086:9d31] type 00 class 0x118000 conventional PCI endpoint
kesä 03 22:42:54 eemil-kde kernel: pci 0000:00:15.0: [8086:9d60] type 00 class 0x118000 conventional PCI endpoint
kesä 03 22:42:54 eemil-kde kernel: pci 0000:00:15.1: [8086:9d61] type 00 class 0x118000 conventional PCI endpoint
kesä 03 22:43:00 eemil-kde sddm-greeter-qt6[988]: Reading from "/usr/local/share/xsessions/plasmax11.desktop"
kesä 03 22:43:00 eemil-kde sddm-greeter-qt6[988]: Reading from "/usr/share/xsessions/plasmax11.desktop"
kesä 03 22:46:15 eemil-kde kernel: pci 0000:00:14.2: [8086:9d31] type 00 class 0x118000 conventional PCI endpoint
kesä 03 22:46:15 eemil-kde kernel: pci 0000:00:15.0: [8086:9d60] type 00 class 0x118000 conventional PCI endpoint
kesä 03 22:46:15 eemil-kde kernel: pci 0000:00:15.1: [8086:9d61] type 00 class 0x118000 conventional PCI endpoint
kesä 03 22:46:21 eemil-kde sddm-greeter-qt6[993]: Reading from "/usr/local/share/xsessions/plasmax11.desktop"
kesä 03 22:46:21 eemil-kde sddm-greeter-qt6[993]: Reading from "/usr/share/xsessions/plasmax11.desktop"
kesä 03 22:47:44 eemil-kde kernel: pci 0000:00:14.2: [8086:9d31] type 00 class 0x118000 conventional PCI endpoint
kesä 03 22:47:44 eemil-kde kernel: pci 0000:00:15.0: [8086:9d60] type 00 class 0x118000 conventional PCI endpoint
kesä 03 22:47:44 eemil-kde kernel: pci 0000:00:15.1: [8086:9d61] type 00 class 0x118000 conventional PCI endpoint
kesä 03 22:47:50 eemil-kde sddm-greeter-qt6[989]: Reading from "/usr/local/share/xsessions/plasmax11.desktop"
kesä 03 22:47:50 eemil-kde sddm-greeter-qt6[989]: Reading from "/usr/share/xsessions/plasmax11.desktop"
kesä 03 23:03:46 eemil-kde systemd[5156]: Starting plasma-kwin_x11.service - KDE Window Manager...
kesä 03 23:03:46 eemil-kde systemd[5156]: plasma-kwin_x11.service: Main process exited, code=exited, status=203/EXEC
kesä 03 23:03:46 eemil-kde systemd[5156]: plasma-kwin_x11.service: Failed with result 'exit-code'.
kesä 03 23:03:46 eemil-kde systemd[5156]: Failed to start plasma-kwin_x11.service - KDE Window Manager.
kesä 03 23:03:46 eemil-kde systemd[5156]: plasma-kwin_x11.service: Scheduled restart job, restart counter is at 1.
kesä 03 23:03:46 eemil-kde systemd[5156]: Starting plasma-kwin_x11.service - KDE Window Manager...
kesä 03 23:03:46 eemil-kde systemd[5156]: plasma-kwin_x11.service: Main process exited, code=exited, status=203/EXEC
kesä 03 23:03:46 eemil-kde systemd[5156]: plasma-kwin_x11.service: Failed with result 'exit-code'.
kesä 03 23:03:46 eemil-kde systemd[5156]: Failed to start plasma-kwin_x11.service - KDE Window Manager.
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Scheduled restart job, restart counter is at 2.
kesä 03 23:03:47 eemil-kde systemd[5156]: Starting plasma-kwin_x11.service - KDE Window Manager...
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Main process exited, code=exited, status=203/EXEC
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Failed with result 'exit-code'.
kesä 03 23:03:47 eemil-kde systemd[5156]: Failed to start plasma-kwin_x11.service - KDE Window Manager.
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Scheduled restart job, restart counter is at 3.
kesä 03 23:03:47 eemil-kde systemd[5156]: Starting plasma-kwin_x11.service - KDE Window Manager...
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Main process exited, code=exited, status=203/EXEC
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Failed with result 'exit-code'.
kesä 03 23:03:47 eemil-kde systemd[5156]: Failed to start plasma-kwin_x11.service - KDE Window Manager.
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Scheduled restart job, restart counter is at 4.
kesä 03 23:03:47 eemil-kde systemd[5156]: Starting plasma-kwin_x11.service - KDE Window Manager...
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Main process exited, code=exited, status=203/EXEC
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Failed with result 'exit-code'.
kesä 03 23:03:47 eemil-kde systemd[5156]: Failed to start plasma-kwin_x11.service - KDE Window Manager.
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Scheduled restart job, restart counter is at 5.
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Start request repeated too quickly.
kesä 03 23:03:47 eemil-kde systemd[5156]: plasma-kwin_x11.service: Failed with result 'exit-code'.
kesä 03 23:03:47 eemil-kde systemd[5156]: Failed to start plasma-kwin_x11.service - KDE Window Manager.
kesä 03 23:03:49 eemil-kde systemd[5156]: Reached target plasma-workspace-x11.target.
kesä 03 23:04:48 eemil-kde systemd[5156]: Stopped target plasma-workspace-x11.target.