(In reply to JerryD from comment #426) > I am on Ryzen 2500U Laptop, HP. I am using kernel 4.18.9-200.fc28.x86_64. > > The zenstates.py script fails when I try to disable C6. Oh well. > > I have kernel parameters: idle=nomwait processor.max_cstate=5 > > I still get lockup. No BIOS settings available on this mavhine. > > Feel pretty hopeless at the moment.
I'm on Ryzen 2500U Laptop as well, HP 15-db0229ur with latest BIOS (F.11 Rev.1 in my case) and latest kernel (something that used to be called 4.19-rc7 on kernel.org). Also have no option of entering BIOS settings available on this machine. Tried putting both kernel parameters AND *successfully* disabling ZenStates.py. Already had massive data loss at least twice. I really, really-really hope this issue won't turn into one of those 10-years-old issues. AMD did publish an errata report, pointing that this may be fixed at software level (page 63). https://www.amd.com/system/files/TechDocs/55449_Fam_17h_M_00h-0Fh_Rev_Guide.pdf -- 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
