Plasma freezes randomly with tons of warnings in journalctl

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1

System Info:

Operating System: Arch Linux
KDE Plasma Version: 6.1.2
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2
Kernel Version: 6.9.8-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 PRO 4750U with Radeon Graphics
Memory: 29.2 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: LENOVO
Product Name: 20U5S0M600
System Version: ThinkPad L14 Gen 1

Randomly my plasma desktop freezes - I cant click on any icons on the panels or any icon on the desktop or right click the desktop, but everything else runs just fine. I can even open up settings or other applications. This is only mildly annoying, but would be great to know if I am doing something wrong here that is causing this.

journalctl has a continuous stream of

Jul 11 19:51:37 akshatd-tp plasmashell[13213]: file:///usr/share/plasma/plasmoids/org.kde.kscreen/contents/ui/main.qml:77:25: QML ColumnLayout: possible QQuickItem::polish() loop
Jul 11 19:51:37 akshatd-tp plasmashell[13213]: file:///usr/share/plasma/plasmoids/org.kde.kscreen/contents/ui/main.qml:77:25: QML ColumnLayout: ColumnLayout called polish() inside updatePolish() of ColumnLayout

spamming at around 150 times a second

2

Update: On htop i can see that /usr/bin/plasmashell was consuming >100% of the CPU, and after killing it, plasma restarted and everything was back to normal.

I hope this is a bug that someone is looking at.

3

i’m also seeing this issue with the same journalctl entries on an nvidia gpu and x11. currently working around it by restarting plasmashell with this:

killall -9 plasmashell;kstart plasmashell

would love to know what is causing it and if it is fixable.

4

I’m seeing it on Fedora (T2Linux) on a MacBook Pro 2019.

System Information

Operating System: Fedora Linux 40
KDE Plasma Version: 6.1.2
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.2
Kernel Version: 6.9.8-200.t2.fc40.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 × Intel® Core™ i9-9880H CPU @ 2.30GHz
Memory: 61.7 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: Apple Inc.
Product Name: MacBookPro16,1
System Version: 1.0

I can trigger it by playing a YouTube video in Firefox. If I kill (and hence restart) plasmashell then the problem recurs within seconds unless I stop playing the video first. I also tried playing a video in Chrome, but that doesn’t seem to trigger the issue at all.

5

thank you for narrowing it down - this does indeed only happen when playing a video (not just youtube, i’ve tried multiple sites to the same effect) in firefox. interestingly, sometimes when i boot my pc this issue is absent until i reboot again with seemingly no pattern.

maybe this is a firefox issue?

still experiencing this on plasma 6.1.4.

kinfo:

Operating System: Arch Linux 
KDE Plasma Version: 6.1.4
KDE Frameworks Version: 6.5.0
Qt Version: 6.7.2
Kernel Version: 6.10.8-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 12 × AMD Ryzen 5 1600 Six-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1080/PCIe/SSE2
6

This also happen to me while recording using OBS but dosen’t occur when watching video on firefox or else.

7

haven’t had this issue for 4 boots in a row, which tells me that this is fixed for me now, i think? i mentioned in an earlier comment that this issue is seemingly randomly not present sometimes when i boot my computer, so i held off on calling it fixed until it i could make it happen several times in a row.

no idea what fixed it or if it was even plasma’s fault, but here’s my current kinfo:

Operating System: Arch Linux 
KDE Plasma Version: 6.1.5
KDE Frameworks Version: 6.6.0
Qt Version: 6.7.3
Kernel Version: 6.11.1-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 12 × AMD Ryzen 5 1600 Six-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1080/PCIe/SSE2