I am using KDE on opensuse Leap 15.6. After a crash a couple weeks ago I found it takes up to a minute for me to unlock the screen after the screen has been locked for a reasonable period, maybe 15 minutes. Looking online I found that this may be a process that is taking CPU time. That I tracked to plasmashell. I am not much of a guts of the OS person. My question is how to I track it down to a specific thing that I can either turn off or reset? Or, would it be better to just reset the plasma config files and rebuild my settings?
A possibly related note, my computer will not go into sleep mode.
Thank you for any help I can get.
Hi! To help folks best guide you, could you please provide your basic system information from the Info Center app? The Copy Details button is the easiest way to get that ready to paste in:
Thank you for the reply. Here is what I have.
Operating System: openSUSE Leap 15.6
KDE Plasma Version: 5.27.11
KDE Frameworks Version: 5.115.0
Qt Version: 5.15.12
Kernel Version: 6.4.0-150600.23.33-default (64-bit)
Graphics Platform: X11
Processors: 12 Ă— AMD Ryzen 5 5600 6-Core Processor
Memory: 31.3 GiB of RAM
Graphics Processor: NVIDIA GeForce GTX 1050/PCIe/SSE2
Manufacturer: Gigabyte Technology Co., Ltd.
Product Name: B550M AORUS ELITE
System Version: -CF
I also signed into another account and let it sit with the lockscreen on. When I came back plasmashell was not causing any problems.
Thanks - you mentioned signing in to second account and having it sit with the lockscreen on, in the same way that caused problems on the first one, seemed to work fine?
That would typically indicate that some specific configuration within that first user account is contributing to the issue. Just to check, do you have any customizations applied to that first user account like non-default widgets on your panel or desktop, third-party global themes installed from Get New Stuff/KDE Store, etc.?
It might also be helpful to look at the system journal when the issue starts to see what clues might be logged there. For example, if the CPU starts spiking sometime between 2:20 and 2:30 PM today, you could use sudo journalctl --since="2025-02-11 14:20:00" --until="2025-02-11 14:30:00" to look at that timeframe and see if any major crashes or errors are reported there.
Feel free to post those logs in this topic, using the “Preformatted text” option in the formatting toolbar, and folks can help with possible troubleshooting ideas 
For what it’s worth, it is possible that an underlying issue here has since been fixed in upstream code - I only mention that because I have personally found Plasma 6 to be much more reliable than Plasma 5 on my devices with NVIDIA graphics cards. openSUSE Leap typically freezes the upstream software versions that are packaged - it might also be worthwhile testing out a distribution that ships more up-to-date software, to see if these issues might have been already been resolved?
I’ve also experienced the same problem under X11. The CPU is so heavily utilized the fans ramp up, with a fairly large delay until the password prompt appears. I’m running the default Breeze Dark theme.
Operating System: KDE neon 6.2
KDE Plasma Version: 6.3.0
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.2
Kernel Version: 6.11.0-17-generic (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-8700K CPU @ 3.70GHz
Memory: 31.3 GiB of RAM
Graphics Processor: NVIDIA GeForce RTX 4070 SUPER/PCIe/SSE2
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Good point @BulletDust, it’s possible that this is the somewhat gnarly-looking 484323 – High CPU load of kwin_x11 when locking or turning off the screen if it’s only showing up on X11, since it sounds like an Xorg bug might be at the root of it (that one was first reported with Plasma 6, but maybe there’s still a connection)?
@JayTreiman55, can you reproduce this issue on your device when using a Wayland session?
