Created attachment 147344 [details] bad font rendering example SUMMARY Hey there, I recently switched from x11 to wayland. I have two displays, one turned by 90° (Display 1), one oriented normally (Display 0). Display 0 is set to 100% scale, Display 1 to 125% scale. In some places, like the system settings window, fonts are broken (see attachment), which really makes it hard to read it. Ironically, it's especially bad in the font settings of plasma :D I own an nvidia graphics card with proprietary drivers. STEPS TO REPRODUCE 1. switch to wayland 2. set two displays to different scale factors 3. try to read text OBSERVED RESULT Font is partly unreadable EXPECTED RESULT font looks clear as water SOFTWARE/OS VERSIONS Operating System: Manjaro Linux KDE Plasma Version: 5.24.2 KDE Frameworks Version: 5.91.0 Qt Version: 5.15.2 Kernel Version: 5.16.11-2-MANJARO (64-bit) Graphics Platform: Wayland Processors: 8 × Intel® Core™ i7-6700K CPU @ 4.00GHz Memory: 23.4 GiB of RAM Graphics Processor: NVIDIA GeForce GTX 1080/PCIe/SSE2 ADDITIONAL INFORMATION I wasn't sure which component's fault it is, so I just put it in the general category, sorry
Does it go away if you restart the affected app? Does it affect QtWidgets apps like Dolphin?
(In reply to Nate Graham from comment #1) > Does it go away if you restart the affected app? > > Does it affect QtWidgets apps like Dolphin? Unfortunately, it doesn't go away after restarting the app and it doesn't happen with Dolphin.
And it doesn't happen with anything in Plasma itself, right? Like text in Kickoff of the Task Manager or icons on the desktop?
(In reply to Nate Graham from comment #3) > And it doesn't happen with anything in Plasma itself, right? Like text in > Kickoff of the Task Manager or icons on the desktop? No, neither in kickoff, icons on the desktop nor in the task manager in the panel.
Ok, that means that the problem is limited to software using qqc2-desktop-style, or QtQuick style for apps. That style uses graphics from the QtWidgets style. So the issue is either in KStyleItem which gets the image, or else deeper in the stack and related to the GPU rendering. Cannot reproduce with 125% scale on Wayland using an Intel HD 620 GPU. May be NVIDIA-related.
Created attachment 148566 [details] Window Rules - System Settings I am getting this issue on AMD GPU but only with one screen. I have one primary (2160p@130% + 1440p@100%) and when I use settings on second screen I'm getting artifacts.
Hey there, I tested a few things and I noticed that all my text looks broken, when I disable font smoothing (disabling anti-aliasing). Might it be that it's not applied everywhere for some reason on my system?
This should definitely be fixed in Plasma 6. I haven't been able to reproduce it in a long time.