Arch Linux

Gricenchos

Member

Registered: 2016-09-03

Posts: 25

Re: Random system freezes/reboots

I've found out that it's possible to use the curve optimiser with the ryzenadj package. For now I've removed all kernel parameters and tried to add a bit more voltage to the CPU through that. Will report on the results.

Gricenchos wrote:
Edit 2: processor.max_cstate=1 doesn't seem to help much. Still getting freezes - it seems like kwin freezing? Unsure.

Thanks for the update.

The behavior you're describing now — graphical freezes (kwin locking up) instead of full kernel panic — is a different failure mode.

We need journal logs to be sure whether this is a GPU driver hang or something else.

Meanwhile: 
Since

processor.max_cstate=1

alone is insufficient, the next consistent step is to also add:

idle=nomwait

This prevents the kernel from using the MWAIT instruction during idle, which can trigger deep sleep instability even when deeper C-states are disabled.

This is not random trial-and-error — it's a documented mitigation path for Ryzen C-state related issues.

No new kernel parameters beyond that at this stage. Clean isolation.

Edit:
Post journal from previous boot:

sudo journalctl -b -1 -p 3

or full log:

sudo journalctl -b -1 | curl -F 'file=@-' 0x0.st

Here's the full log, since it was a couple reboots ago:

http://0x0.st/8WXZ.txt

I will return the mentioned parameters when/if I get another freeze/panic and continue from there.

Last edited by Gricenchos (Today 05:35:19)