(In reply to Maxim Bakulin from comment #492)
> Created attachment 280669 [details]
> dmesg of freeze with 4.20.3 kernel and nomwait, rcu_nocbs, max_cstate applied
>
> some older info here:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1690085/comments/566
>
> I have three machines with
Well, 4.18.19 froze after four days.
4.19.7 froze in 3½ hours.
rcu_nocb_poll mem_encrypt=off nosmt=force
CONFIG_RCU_NOCB_CPU=y
CONFIG_PREEMPT_RCU=y
[12572.931476] watchdog: BUG: soft lockup - CPU#1 stuck for 22s!
[(journald):18688]
[12572.931509] watchdog: BUG: soft lockup - CPU#4 stuck for
With Ryzen 1600X + Radeon RX 550 + ASRock Taichi X370 I didn't have this bug
until 4.18.20. 4.18.18 had 12 days uptime and 4.18.20
(and 4.19.6) maybe 6 hours. 4.18.19 now has 56 hours uptime.
X just freezes (keyboard+mouse dead) and I have to press reset button.
Likewise, if I am in console,
