(In reply to Borislav Petkov from comment #519) > (In reply to Philip Rosvall from comment #518) > > I can confirm that "idle=halt" makes both my Ryzen desktop and Ryzen > > notebook more stable than anything else I've tried. I have not experienced > > freezes for some days now. > > Can you upload dmesg from the working and non-working kernels pls? > > Thx.
I have only used the workaround since kernel 4.20.4, so I just booted the kernel now without and with the parameter. As can be seen in line 704 in the log without "idle=halt", we see the error "[Firmware Bug]: ACPI MWAIT C-state 0x0 not supported by HW (0x0)". This error does not occur when "idle=halt" is set. -- 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
