FW13 kworker stuck near 100% on Fedora 41

Framework Laptop 13 Linux
1

Which Linux distro are you using?
Fedora 41 KDE

Which kernel are you using?
6.12.7-200.fc41.x86_64 (64-bit)

Which BIOS version are you using?
3.05

Which Framework Laptop 13 model are you using? (AMD Ryzen™ 7040 Series, Intel® Core™ Ultra Series 1, 13th Gen Intel® Core™ , 12th Gen Intel® Core™, 11th Gen Intel® Core™)

AMD Ryzen 5 7640U

Earlier today I was using Firefox on my FW 13, I had began noticing my CPU temp was creeping up even thought I was just looking at emails. Then the system experienced extreme slow down. My mouse cursor would only move at what felt like 1fps. I could still interact with the computer and it seemed like opening tabs and opening a terminal ran at the correct speed. It was almost as if just everything was being rendered slowly.

I checked CPU frequencies and they looked normal. I had experienced this before on Fedora 40 months ago, and while it happened multiple times a week back then, I had not experienced this issue in a couple of months.

I checked top and noticed there was a kworker process at almost 100%. This seemed similar to [TRACKING] Kworker stuck at near 100% CPU usage with Ubuntu 22.04

I ran perf as that OP did and saw the following.

Screenshot_20250105_170710
Screenshot_20250105_1707101819×1816 293 KB

I also ran dmesg and saw a couple of amdgpu errors

Screenshot_20250105_170849
Screenshot_20250105_1708491819×1816 305 KB

Rebooting fixes the issue.

2

This seems oddly similar to the issue described in this thread. I’ve experienced the issue as well (on Arch Linux, using an AMD system both on the linux and linux-zen kernel), and was able to fix it by setting the following kernel parameter: amdgpu.dcdebugmask=0x10

Unfortunately, I don’t have a Fedora system to test this on. While this solution may work for you too, I suggest you do a little research beforehand to avoid any issues. I wish you luck!