hello KDE forum, i wonder if you can help me out. i have these strange visual effects on most applications, such as konsole, yakuake, firefox, mpv and discord. they appear in windowed, maximized and fullscreen modes. the issue seems to disappear when zoom is set to 100%; it appears at both 140% and 150% (<- dyslexia lol).
some apps also maximize to a slightly incorrect size, causing little lines showing the desktop behind them along the edges of the screen. this is fixable by setting the correct size with Window Settings rules (Size > Apply Initially), but i wondered if it was related to the other issue. iâm not sure if this also depends on zoom level.
as a new user i can only post one screenshot, so hereâs the most annoying example:
sorry for the awful phone picture, but it doesnât appear on spectacle.
some of them are persistent, but others, like the one pictured, pop in and out as i interact. itâs very distracting!
my system is as follows:
distribution: Debian 12 x86_64 stable (bookworm, main, non-free firmware, contribs)
host: 21EBCTO1WW ThinkPad E14 Gen 4
Plasma version: 5.27.5
window manager: kwin
protocol: Wayland
CPU: AMD Ryzen 3 5425U
GPU: AMD ATI 04:00.0 Barcelo
output of kscreen-doctor --outputs
:
Output: 1 eDP-1 enabled connected priority 1 Panel Modes: 0:1920x1080@60*! 1:1680x1050@60 2:1280x1024@60
3:1440x900@60 4:1280x800@60 5:1280x720@60 6:1024x768@60 7:800x600@60 8:640x480@60 9:1280x1024@60 10:102
4x768@60 11:1280x800@60 12:1920x1080@60 13:1600x900@60 14:1368x768@60 15:1280x720@60 Geometry: 0,0 1371x
771 Scale: 1.4 Rotation: 1 Overscan: 0 Vrr: incapable RgbRange: unknown
it happens on all stock themes.
display settings:
as i said my screen is set to 140% zoom; no overscan, and legacy applications apply scaling themselves.
i installed Debian on another, much older Thinkpad from the same USB drive and it doesnât have the same issue. KDE was selected during installation on both laptops. the installer was burned from an iso on Debianâs website and i regularly update && upgrade, so iâm up to date (with Debian, not KDE lol).
possibly related issue: âweird glitch on top left cornerâ (i canât post a link, but itâs a recent post)
thanks a lot for reading!