With Ryzen 1600X + Radeon RX 550 + ASRock Taichi X370 I didn't have this bug until 4.18.20. 4.18.18 had 12 days uptime and 4.18.20 (and 4.19.6) maybe 6 hours. 4.18.19 now has 56 hours uptime.
X just freezes (keyboard+mouse dead) and I have to press reset button. Likewise, if I am in console, freeze happens the same way; cursor stops blinking and I don't get any messages. I am booting with nosmt=force rcu_nocbs=0-5 mem_encrypt=off (also CONFIG_RCU_NOCB_CPU=Y ). Now, I don't feel like doing git-bisect (commits v4.18.19..v4.18.20),... Does someone have ideas as to what to try next? Anything suspicious in v4.18.20 commits? Some differences in dmesg 4.18.19..4.18.20: -smpboot: Allowing 16 CPUs, 10 hotplug CPUs +smpboot: Allowing 16 CPUs, 4 hotplug CPUs -.... node #0, CPUs: #1 #2 #3 #4 #5 +.... node #0, CPUs: #1 #2 #3 #4 #5 #6 #7 #8 #9 #10 #11 smp: Brought up 1 node, 6 CPUs smpboot: Max logical packages: 3 -ACPI: (supports S0 S5) +ACPI: (supports S0 S3 S5) -- 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
