Hi Thomas, Various people are reporting false positive "do_IRQ: #.55 No irq handler for vector" messages on AMD ryzen based laptops, see e.g.:
https://bugzilla.redhat.com/show_bug.cgi?id=1551605 Which contains this dmesg snippet: Feb 07 20:14:29 localhost.localdomain kernel: smp: Bringing up secondary CPUs ... Feb 07 20:14:29 localhost.localdomain kernel: x86: Booting SMP configuration: Feb 07 20:14:29 localhost.localdomain kernel: .... node #0, CPUs: #1 Feb 07 20:14:29 localhost.localdomain kernel: do_IRQ: 1.55 No irq handler for vector Feb 07 20:14:29 localhost.localdomain kernel: #2 Feb 07 20:14:29 localhost.localdomain kernel: do_IRQ: 2.55 No irq handler for vector Feb 07 20:14:29 localhost.localdomain kernel: #3 Feb 07 20:14:29 localhost.localdomain kernel: do_IRQ: 3.55 No irq handler for vector Feb 07 20:14:29 localhost.localdomain kernel: smp: Brought up 1 node, 4 CPUs Feb 07 20:14:29 localhost.localdomain kernel: smpboot: Max logical packages: 1 Feb 07 20:14:29 localhost.localdomain kernel: smpboot: Total of 4 processors activated (15968.49 BogoMIPS) It seems that we get an IRQ for each CPU as we bring it online, which feels to me like it is some sorta false-positive. I temporarily have access to a loaner laptop for a couple of weeks which shows the same errors and I would like to fix this, but I don't really know how to fix this. Note if you want I can set up root ssh-access to the laptop. Regards, Hans