| Summary: | Wayland: Text Rendering Artifacts When Scaling the Screen | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | Alex J Green <greenulito> |
| Component: | wayland-generic | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | kdedev, nate, u0sd2qpny |
| Priority: | NOR | Keywords: | wayland-only |
| Version First Reported In: | 6.3.3 | ||
| Target Milestone: | --- | ||
| Platform: | Neon | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: |
This is how fonts look like when screen is scaled to 125%
This is how fonts looks like if the screen is not scaled (i.e. 100%) |
||
|
Description
Alex J Green
2025-03-25 11:55:52 UTC
Created attachment 179719 [details]
This is how fonts look like when screen is scaled to 125%
Created attachment 179720 [details]
This is how fonts looks like if the screen is not scaled (i.e. 100%)
Does it happen in a new clean user account with no customizations except for changing the scale factor to 125%? If not, this is probably caused by your font settings somehow. (In reply to Nate Graham from comment #3) > Does it happen in a new clean user account with no customizations except for > changing the scale factor to 125%? If not, this is probably caused by your > font settings somehow. Hi! This is a clean account. I do only these steps: 1 Write the Neon ISO onto USB stick 2 Boot USB stick 3 Open Display settings, (for me it already shows 105%) change to 125%, press OK 4 Open Settings again, go to Font Management –– observe fonts I use Neon here only for reproducing this observation. Normally, I run different distributive. It is observed not only on the Font Management, but for other applications too; I think that the Font Management page is good for reproducing it because everyone has this application — this is why I use Font Management screen. Firstly I found it in my gentoo installation https://forums.gentoo.org/viewtopic-t-1172976.html but that is not something that can be reproduced on another laptop, so I needed some reproducible example and I find Neon is very useful. Additional observation is that it does not appear in X11, and (just for experiment purposes) I tried to set QT_SCALE_FACTOR with scaling 100% under Wayland session then it is not observed too. Maybe, this is related to the graphics card? I run Intel Arc with Xe drivers -- these are relatively new drivers > 00:02.0 VGA compatible controller: Intel Corporation Meteor Lake-P [Intel Arc Graphics] (rev 08) > Subsystem: Lenovo Device 50e9 > Kernel driver in use: i915 > Kernel modules: xe Also, the screen is 14" 1920x1200 Can you clarify some points? 1. Can you attach a few screenshots of the issue in other contexts? 2. Does it happen at both 105% scale as well as 125% scale, or only one? (In reply to Nate Graham from comment #5) > Can you clarify some points? > > 1. Can you attach a few screenshots of the issue in other contexts? > 2. Does it happen at both 105% scale as well as 125% scale, or only one? A1: It happens not only un Fint browser, but in other applciations. If for example I open in Firefox https://fonts.google.com/noto/specimen/Noto+Sans and set background to black (there is a theme button on the page) and change font (there is a dropdown on that page) from 48px to 20px, then fonts become colored. This is only observed under Wayland session A2: It happens with 105%, with 125%, with 150% – any non integer scale. Does not happen with 200%. Here's the video, starting from boot from usb iso, then 105 (corrupted), then 125(corrupted), then 100 (good) https://fex.net/s/4kmkkpe Here's an example for A1, made here https://fonts.google.com/noto/specimen/Noto+Sans https://fex.net/s/sevdk7r It can be seen that characters change their shape when they are slowly moved up-down Similar bug 499289 I also experience it with software and hardware, listed here: bug 502322 See also: bug 502322, bug 502103 (In reply to Alex J Green from comment #8) > Similar bug 499289 This looks like the same bug as that report. I'm going to mark this as a duplicate of that one. Please follow that report for updates. Thanks! *** This bug has been marked as a duplicate of bug 499289 *** |