(In reply to ison from comment #544) > (In reply to Philip Rosvall from comment #541) > > Try idle=halt! It is the workaround that fixes the random freezes! You > don't > > need anything else (at least not with Ryzen 1*** and 2***U processors, as > it > > works wonders on my desktop with a 1600 and my notebook with a 2700U). > > > > IDLE=HALT IS THE WORKAROUND THAT FIXES THIS BULLSHIT! > > I REPEAT: > > IDLE=HALT! > > > > It will probably work for most of you too! > > In light of the last few comments here I can say that I may have been > confusing 2 separate issues: The random segfaults and the lockups. > I tested idle=halt a while back and I may have inadvertently concluded that > it didn't work due to my machine still receiving segfaults, which I was > assuming would eventually lead to a lockup. > > Likewise, the solution I mentioned earlier (disabling PAGE_TABLE_ISOLATION) > seems to have fixed my crashes, but my machine just locked up. > > I've set idle=halt again and this time I'll try to keep the two issues > separate and only post back here if I still receive lockups. > Thanks for clarifying the issue.
It seems like seperate issues. The lockups seems, to me, to be related to MWAIT and misconfigured C-states. Have you taken a look at your dmesg after a boot without idle=halt, if you get the error "[Firmware Bug]: ACPI MWAIT C-state 0x0 not supported by HW (0x0)"? -- 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
