Hi, I'm also getting such messages since the buster upgrade: Message from syslogd@lant at Aug 26 20:05:12 ... kernel:[686221.093605] do_IRQ: 1.52 No irq handler for vector Message from syslogd@lant at Aug 27 01:03:12 ... kernel:[704101.075251] do_IRQ: 1.43 No irq handler for vector -- Regards, Feri