Arch Linux

ajww

Member

Registered: 2025-04-15

Posts: 2

[SOLVED] kwin_wayland/Firefox Half of window turns transparent

https://i.imgur.com/qVV0zcQ.png It'll display whatever's underneath Firefox. Never had a problem until the most recent update, so not sure where to start. Using X11  as a fallback for now and the issue isn't present there.

Operating System: Arch Linux
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.9.0
Kernel Version: 6.14.2-zen1-1-zen (64-bit)
Graphics Platform: X11 [fallback]
Processors: 8 × Intel® Core™ i5-1035G1 CPU @ 1.00GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Intel® UHD Graphics
Manufacturer: Dell Inc.
Product Name: Inspiron 15 3511

Last edited by ajww (2025-04-18 02:02:49)

AntiWrapper

Member

Registered: 2025-04-17

Posts: 1

Re: [SOLVED] kwin_wayland/Firefox Half of window turns transparent

I have the same issue, also running KDE Plasma on Wayland. Turning off hardware acceleration in Firefox didn't help. The issue is not present in Chrome.

I have the same version of software as listed above (except standard kernel instead of Zen) but for hardware I have an AMD processor and GPU.

Xephon

Member

Registered: 2024-12-22

Posts: 92

Re: [SOLVED] kwin_wayland/Firefox Half of window turns transparent

Might be the same as
https://www.reddit.com/r/firefox/commen … refox_137/

ajww

Member

Registered: 2025-04-15

Posts: 2

Re: [SOLVED] kwin_wayland/Firefox Half of window turns transparent

Might be the same as
https://www.reddit.com/r/firefox/commen … refox_137/

Yup, you were on the right track. I just came back to mark this as solved, ran into another use with same issue. Resetting gfx.webrender.compositor.force-enabled def seems to have fixed it, though I reset other settings related to webrender just to be safe.