(In reply to zheilbron from comment #624) > As @C0rn3j mentioned, I'm in a similar boat. With a Ryzen 3700x, I continue > to get the following errors: > > ``` > rcu: INFO: rcu_sched self-detected stall on CPU > ... > watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [kworker/1:1:94] > ``` > > I've tried just about every workaround that I've read about: > * Disable C5/C6 states (from BIOS, from zenstates.py) > * Set "Typical Current Idle" in BIOS > * Add a combination of kernel parameters (idle=nomwait, noapci, acpi=off, > rcu_nocbs=0-15, processor.max_cstate=1) > > Nothing works. > > System specs: > Linux ... 4.19.0-5-amd64 #1 SMP Debian 4.19.37-5+deb10u2 (2019-08-08) x86_64 > MSI B450 Gaming Pro Carbon AC (BIOS version 7B85v18) > Ryzen 7 3700X
It seems that leaving the machine idle does not produce the issue. However, connecting over Wireguard + SSH (which is how I had been accessing the machine) seems to cause the issue to manifest. After following the advice here (https://bbs.archlinux.org/viewtopic.php?id=247900), I've added the `nordrand` boot flag. This seems to be keeping the issue at bay so far. Perhaps I was chasing the wrong issue! Time will tell... I'll report back with any new findings or if it remains stable for some time. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1690085 Title: Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1690085/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
