Bug 454238 - Constantly updated text flickers with oxygen widget style if scaling enabled.
Summary: Constantly updated text flickers with oxygen widget style if scaling enabled.
Status: CONFIRMED
Alias: None
Product: Oxygen
Classification: Plasma
Component: style (other bugs)
Version First Reported In: 5.24.90
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: Unassigned bugs
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2022-05-22 21:51 UTC by retired
Modified: 2026-02-13 17:46 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:


Attachments
demo (1.26 MB, video/x-matroska)
2022-05-22 21:51 UTC, retired
Details

Note You need to log in before you can comment on or make changes to this bug.
Description retired 2022-05-22 21:51:52 UTC
Created attachment 149121 [details]
demo

SUMMARY
I am using a 14 inch laptop with 1080p screen, no scaling makes everything tiny so I increased scaling to 125%, but it appears to cause font hop up and down very slightly.

Breeze, Fusion and MS 9x styles are not affected


STEPS TO REPRODUCE
1. Set scaling to 125%, haven't tried higher values, apart from 100%. Make sure that widget theme is set to Oxygen.
2. Open ksysguard switch to tab with graphs.
3. Updated numbers flicker on my system.

OBSERVED RESULT
Flickering text, video attached below.

EXPECTED RESULT
No eyesore.

SOFTWARE/OS VERSIONS

Operating System: Arch Linux
KDE Plasma Version: 5.24.90
KDE Frameworks Version: 5.94.0
Qt Version: 5.15.4
Kernel Version: 5.17.9-zen1-1-zen (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-3720QM CPU @ 2.60GHz
Memory: 15.4 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 4000
Manufacturer: LENOVO
Product Name: redacted
System Version: ThinkPad T430

ADDITIONAL INFORMATION
I tested with default fonts config (Noto), recorded with Ubuntu fonts.
It happens to me on Xorg, but confirmed with wayland just in case.

Kinda sucks that Oxygen fell out of favor, I am not a big fan of flat theming.
Comment 1 Filip Fila 2026-02-13 07:53:07 UTC
Are you still seeing this?

I can see somewhat of a different animation than in Breeze when using ksysguard6, but it doesn't seem that bad as your video. And KSysGuard has been replaced by System Monitor so are you seeing this bug in any place on your desktop?
Comment 2 retired 2026-02-13 17:24:26 UTC
I can still reproduce it with ksysguard6-git from AUR. Same steps, set widgets to oxygen and scaling to 125%. Not a big deal for me as I don't use scaling anymore (1440p 32" screen). Also my KDE is on entirely different hardware now. I'm not sure if it happens anywhere else.
I'm using Ubuntu fonts, with Source Code Pro as mono font, if that's of any help, I'm pretty sure it was all Ubuntu fonts on my original report.

As for ksysguard being deprecated, new system monitor is a busy bloated mess, and one meter on main screen is broken for me (Raid0 on ZFS). Maybe it looks decent on Hi-DPI screens, who knows.
All I expect from system monitor is simple charts for system stats and process list, that's it. It's been solved 20 years ago.

Operating System: Arch Linux 
KDE Plasma Version: 6.5.5
KDE Frameworks Version: 6.22.0
Qt Version: 6.10.2
Kernel Version: 6.12.67-273-tkg-bore (64-bit)
Graphics Platform: X11
Processors: 16 × AMD Ryzen 7 7800X3D 8-Core Processor
Memory: 96 GiB of RAM (93.9 GiB usable)
Graphics Processor: AMD Radeon RX 7800 XT
Comment 3 Filip Fila 2026-02-13 17:45:57 UTC
(In reply to retired from comment #2)
> I can still reproduce it with ksysguard6-git from AUR. Same steps, set
> widgets to oxygen and scaling to 125%. Not a big deal for me as I don't use
> scaling anymore (1440p 32" screen). Also my KDE is on entirely different
> hardware now. I'm not sure if it happens anywhere else.
> I'm using Ubuntu fonts, with Source Code Pro as mono font, if that's of any
> help, I'm pretty sure it was all Ubuntu fonts on my original report.
> 
> As for ksysguard being deprecated, new system monitor is a busy bloated
> mess, and one meter on main screen is broken for me (Raid0 on ZFS). Maybe it
> looks decent on Hi-DPI screens, who knows.
> All I expect from system monitor is simple charts for system stats and
> process list, that's it. It's been solved 20 years ago.
> 
> Operating System: Arch Linux 
> KDE Plasma Version: 6.5.5
> KDE Frameworks Version: 6.22.0
> Qt Version: 6.10.2
> Kernel Version: 6.12.67-273-tkg-bore (64-bit)
> Graphics Platform: X11
> Processors: 16 × AMD Ryzen 7 7800X3D 8-Core Processor
> Memory: 96 GiB of RAM (93.9 GiB usable)
> Graphics Processor: AMD Radeon RX 7800 XT

That's for checking, switching the status to confirmed and moving over to the style sub-component.
Comment 4 Filip Fila 2026-02-13 17:46:06 UTC
(In reply to Filip Fila from comment #3)
> (In reply to retired from comment #2)
> > I can still reproduce it with ksysguard6-git from AUR. Same steps, set
> > widgets to oxygen and scaling to 125%. Not a big deal for me as I don't use
> > scaling anymore (1440p 32" screen). Also my KDE is on entirely different
> > hardware now. I'm not sure if it happens anywhere else.
> > I'm using Ubuntu fonts, with Source Code Pro as mono font, if that's of any
> > help, I'm pretty sure it was all Ubuntu fonts on my original report.
> > 
> > As for ksysguard being deprecated, new system monitor is a busy bloated
> > mess, and one meter on main screen is broken for me (Raid0 on ZFS). Maybe it
> > looks decent on Hi-DPI screens, who knows.
> > All I expect from system monitor is simple charts for system stats and
> > process list, that's it. It's been solved 20 years ago.
> > 
> > Operating System: Arch Linux 
> > KDE Plasma Version: 6.5.5
> > KDE Frameworks Version: 6.22.0
> > Qt Version: 6.10.2
> > Kernel Version: 6.12.67-273-tkg-bore (64-bit)
> > Graphics Platform: X11
> > Processors: 16 × AMD Ryzen 7 7800X3D 8-Core Processor
> > Memory: 96 GiB of RAM (93.9 GiB usable)
> > Graphics Processor: AMD Radeon RX 7800 XT
> 
> That's for checking, switching the status to confirmed and moving over to
> the style sub-component.

*Thanks