| Summary: | Filenames on specific desktop columns blurry with fractional scaling, depending on alignment settings | ||
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| Product: | [Plasma] plasmashell | Reporter: | madness742 |
| Component: | Desktop icons & Folder View widget | Assignee: | Plasma Bugs List <plasma-bugs> |
| Status: | CONFIRMED --- | ||
| Severity: | minor | CC: | hein, kde, nate, tbertels, yanexbug |
| Priority: | NOR | ||
| Version First Reported In: | 6.3.1 | ||
| Target Milestone: | 1.0 | ||
| Platform: | Fedora RPMs | ||
| OS: | Linux | ||
| See Also: | https://bugs.kde.org/show_bug.cgi?id=501142 | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: |
Aligned desktop left to right, positioned in the upper left corner.
Aligned desktop right to left, positioned in the upper left corner. Behaviour on 6.4.4. Behaviour on 6.4.4 (increased font size). |
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Description
madness742
2025-02-24 17:49:13 UTC
Created attachment 178831 [details]
Aligned desktop right to left, positioned in the upper left corner.
You probably mean column instead of row. Defining the following global environment variable has solved the blurriness: `QT_SCALE_FACTOR_ROUNDING_POLICY=Ceil`. Interestingly, this has also fixed the weird text rendering I'd see in certain places, such as the digital clock settings. (Unrelated to this bug report) That environment variable essentially turns off fractional scaling support entirely, so KWin is downscaling from an integer scale. This works, but generates a *different* type of blurriness and also wastes CPU and GPU resources and power. So I'm afraid we can't consider that as a fix; we'll need to find the actual cause here and fix it. It would be helpful if we could find a 100% reproducible test case for the bug. So far I have not been able to trigger it. (In reply to Nate Graham from comment #4) > So I'm afraid we can't consider that as a fix; we'll > need to find the actual cause here and fix it. Apologies, I should've phrased it differently. I meant it as a workaround (for myself) while the bug gets a proper fix. > It would be helpful if we could find a 100% reproducible test case for the > bug. So far I have not been able to trigger it. I've also been testing it on my ThinkPad T400 (2008) at 125% scaling (1280x800) with #ff1616 as my wallpaper colour, and I can reproduce it using the steps from my first comment. Sadly I have no other machines to test on, but both my desktop (AMD/AMD) and laptop (Intel/Intel) seem to be affected. Don't have much to add besides a higher resolution (2560x1440) will make the issue much more apparent. At least compared to 1280x800. On the laptop the affected rows are also different for some reason. Linux: Fedora 41 KDE Plasma Version: 6.3.4 KDE Frameworks Version: 6.13.0 Qt Version: 6.8.2 Kernel: 6.14.4 CPU: Intel Core 2 Duo T9400 GPU: Intel GM45 Express chipset There have been a lot of fixes for desktop icon positioning issues recently; can anyone still reproduce this one in Plasma 6.4.4 or later? Thanks! (In reply to Nate Graham from comment #6) > can anyone still reproduce this one in Plasma 6.4.4 or later? The first column still looks a little bit fuzzy on my 1440p monitor. When increasing the system font size by 2 points (pt) it's hard to notice the fuzzyness, but I do notice that the font is slightly darker for some reason. Operating System: Fedora Linux 42 KDE Plasma Version: 6.4.4 KDE Frameworks Version: 6.17.0 Qt Version: 6.9.1 Kernel Version: 6.15.9-201.fc42.x86_64 (64-bit) Graphics Platform: Wayland Created attachment 184176 [details]
Behaviour on 6.4.4.
Created attachment 184177 [details]
Behaviour on 6.4.4 (increased font size).
Is this Wayland specific or can you reproduce it with X11? (In reply to Thomas Bertels from comment #10) > Is this Wayland specific or can you reproduce it with X11? This bug is Wayland specific. |