Bug 475834

Summary: Glitched text/artifacts when using 150% scale factor
Product: [Plasma] plasmashell Reporter: hexchain <kde>
Component: generalAssignee: Plasma Bugs List <plasma-bugs>
Status: RESOLVED DUPLICATE    
Severity: normal CC: CoelacanthusHex, kde, nate
Priority: NOR Keywords: qt6
Version: master   
Target Milestone: 1.0   
Platform: Compiled Sources   
OS: Linux   
Latest Commit: Version Fixed In:
Attachments: Network applet
KRunner
System Settings - Display
System Settings - Touchscreen

Description hexchain 2023-10-19 17:19:39 UTC
Created attachment 162425 [details]
Network applet

SUMMARY
When using a 150% scale factor, some texts and controls seem to render incorrectly: some characters look stretched or compressed, and straight borders of control may look distorted. It happens a lot less frequently with 175% and does not seem to occur at all with 200%.

This is not only seen in Plasma Shell, it also occurs in e.g. KRunner, Spectacle, and System Settings. My guess is that it only happens with QtQuick interfaces, not QtWidget ones, such as KWrite. It also doesn't happen in Plasma 5.

STEPS TO REPRODUCE
Change the scale factor to 150% and navigate around.

OBSERVED RESULT
Some texts look strange. Sometimes the hovering state of an item can also affect the text inside.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 5.27.80
KDE Frameworks Version: 5.240.0
Qt Version: 6.6.0
Kernel Version: 6.5.7-arch1-1 (64-bit)
Graphics Platform: Wayland
Comment 1 hexchain 2023-10-19 17:19:58 UTC
Created attachment 162426 [details]
KRunner
Comment 2 hexchain 2023-10-19 17:20:16 UTC
Created attachment 162427 [details]
System Settings - Display
Comment 3 hexchain 2023-10-19 17:20:34 UTC
Created attachment 162428 [details]
System Settings - Touchscreen
Comment 4 Nate Graham 2023-10-20 15:21:24 UTC

*** This bug has been marked as a duplicate of bug 464069 ***
Comment 5 hexchain 2023-10-20 15:30:10 UTC
Is it a duplicate? I don't see this issue in Plasma 5 though.
Comment 6 Nate Graham 2023-10-20 15:33:11 UTC
It was also a problem in Plasma 5. It may have gotten worse in 6 due to Qt 6 changes, but in any event the solution would be the same.