Kubuntu Forums - Desktop Environment Support

[SOLVED]Updates seem to work but login screen and desktop very low resolution

barfly — Fri, 24 Jul 2026 10:14:29 GMT

I have tried a few times to update my Noble install, but every time it fails with the same result, 1024x768 resolution on both the login and desktop screens. The connection is from an HDMI cable from my computer in the loft to my Samsung 55" S95B in my lounge. The install is fine, login and desktops run at 1920x800 or 3840x2160 depending on scaling.

The GPU is an older GTX1600 Nvidia.

I have tried inserting

Code:

xrandr --output HDMI-1 --mode 1920x1080 --rate 59.94

Into /usr/share/sddm/scripts/xsetup

I have tried nvidia drivers 470, 580 and 595 and nouveau drivers all the same result.

But that does nothing.

My 26.04 install and Windows 11 work fine, and reverting back to an older backup of 24.04 works every time.

Updates kill my resolution, 50% of stuff is off-screen with no way to change the resolution.

Any ideas? I am fresh out of them.

Cheers Tony

My wife's desktop displays bigger than the screen

MichaelEber — Thu, 23 Jul 2026 01:46:08 GMT

My wife has a Lenovo IdeaPad slim 3 15
Monitor is 15.3 and default resolution is 1920x1080 (16:9)

Display is set in Display at 1920x1080 but the desktop must be moved to see all parts of the Desktop

I searched for fixes and one I couldn't find which was the DPI of the font, but I doubt my wife would change anything.
After all she used it this way for a long time without saying anything.

Operating System: Kubuntu 25.10
KDE Plasma Version: 6.4.5
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.2
Kernel Version: 6.17.0-41-generic (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i3-N305
Memory: 8 GiB of RAM (7,5 GiB usable)
Graphics Processor: Intel® Graphics
Manufacturer: LENOVO
Product Name: 82XB
System Version: IdeaPad Slim 3 15IAN8

[SOLVED]An observation re. Psensor

Teunis — Mon, 13 Jul 2026 21:05:46 GMT

Hi,

Since several months or maybe even a year my laptop would suddenly loose the KDE panel and the only way to recover the system would be a hard shut down.
This would happen more and more often.

Now I found a solution, normally I'd have Psensor running but once it is off the computer regains its normal Linux stability.
To be sure and because I hardly ever looked at it anyway I uninstalled it.