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Comment by TaylorAlexander | Hacker News Reader

Unrelated but I would love to figure out why my AMD system will completely lock up (including the mouse) under certain tasks with high CPU loads (in ubuntu). Rendering with Kdenlive is a great way to lock up my entire system for example. It is so irritating it makes me want to go to an intel system even though I have a very nice CPU and mobo.

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I might have the same issue, although it's hard to say.

My current suspicion is it's somehow related to power saving, because I can't reproduce it after a fresh reboot. It only starts happening once I go through a few power states (e.g. by closing the laptop lid).

Since you mentioned a mobo I assume you're on a desktop. Do you use sleep/hibernate?

Ah yeah I remember there being an open issue for the kernel that had something to do with sleep states, but if I recall they supposedly patched that bug. I don't use sleep/hibernate. I'm not sure what my system settings are for those modes. Yes on desktop.

My first gen ryzen 1700 had a silicon bug that was fixed by RMA and c6 sleep states bug can be fixed in software https://wiki.archlinux.org/title/Ryzen#Soft_lock_freezing

I have ’pcie_aspm=off’ in my boot params, although I don’t recall the exact reason why it was needed. Likely something stability related, have you tried it?

Although sounds like your problem could also be caused by I/O saturation?

Doesn't happen to me. I'm on ZorinOS (Ubuntu based) but no such issues.

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