Howdy,
I’m running an up-to-date Fedora 42 system and am receiving new messages. The message is meaningless to me. Here’s what I’m seeing:
[Thu Dec 18 16:00:32 2025] workqueue: drm_fb_helper_damage_work hogged CPU for >10000us 4 times, consider switching to WQ_UNBOUND
What are “we” supposed to do about this? Doc for this message on the internet is meager at best.
Best regards,
George…
You’re not really supposed to do anything with it - it’s aimed more towards the kernel devs.
It’s basically saying that the code to redraw the damaged parts of the screen (i.e. parts that have changed in the frame buffer) is taking more time than expected or desired; more than 10 ms, and did so four times.
Unless it’s an issue for you, or it’s flooding your logs, you can ignore it.
Steve,
Thanks for responding to this question.
How do the devs know there’s a problem that may need to be addressed?
Regards,
George…
They run the same debug kernel that you’re running and see the same messages which suggest that there’s either a code path with needs optimisation, a parameter that needs tuning or that there is a problem with the interaction with a driver (the video driver in this case - whichever one is handling the framebuffer in your specific situation)