Scott,
Scott Branden <scott.bran...@broadcom.com> writes:
> Occasionally I get the following Kernel panic on boot. This is
> running on the latest kernel but have seen it previously as well.
> "Kernel panic - not syncing: IO-APIC + timer doesn't work! Boot with
> apic=debug and send a report."
>
> I don't know who I am support to send a report to. But here is the log with
> apic=debug
> [ 0.006000] ENABLING IO-APIC IRQs
> [ 0.007000] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
> [ 0.007000] ..MP-BIOS bug: 8254 timer not connected to IO-APIC
> [ 0.007000] ...trying to set up timer (IRQ0) through the 8259A ...
> [ 0.007000] ..... (found apic 0 pin 2) ...
> [ 0.007000] ....... failed.
> [ 0.007000] ...trying to set up timer as Virtual Wire IRQ...
> [ 0.007000] ..... failed.
> [ 0.007000] ...trying to set up timer as ExtINT IRQ...
> [ 0.007000] ..... failed :(.
> [ 0.007000] Kernel panic - not syncing: IO-APIC + timer doesn't work!
> Boot with apic=debug and send a report. Then try booting with the 'noapic'
> option.
Nothing which rings a bell. Can you please provide a boot log from a
successful boot with apic=debug on the command line?
Also you might check whether there are BIOS updates for this board. The
early Ryzen BIOSes had some rough edges.
Thanks,
tglx
