(In reply to Borislav Petkov from comment #482) > (In reply to Aaron Muir Hamilton from comment #480) > > So my box was mostly idle for the last day or so, and had locked up while > > the monitor was asleep, so I had to reset it. > > Let me make sure I understand it correctly: you had "idle=nomwait" on > the kernel command line and it became unresponsive?
Yes > If so, it would be really helpful if you could connect that box over > serial to another one and collect logs in realtime with the hope of > maybe catching something relevant. Yeah, I'm looking at that, I don't want to fry the (~500 CAD) board with the wrong serial voltage though (RS-232 v. other serial), so I'm being a bit careful. > The other thing I could suggest is to disable SMT: I know of another > threadripper machine where disabling SMT helped with the lockups. (Not > saying this is the final solution but it would be a good data point to > know). That is maybe an option, for now I disabled C6 from my board firmware (in ASRock's case, by selecting "Typical current idle" [sometimes called "Common current idle" I think, on some Ryzen boards] in Advanced > AMD CBS > Zen Common Options > Power Supply Idle Control); and I'll see if that does the trick. I've heard that this resolved some soft lockup issues on Ryzen. > > Thx. Thank you. -- 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
