[ 17.786040] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready [ 28.198206] eth0: no IPv6 routers present [ 223.751560] irq 16: nobody cared (try booting with the "irqpoll" option) [ 223.751567] Pid: 0, comm: swapper/0 Tainted: G C 3.2.0-34-generic #53-Ubuntu [ 223.751569] Call Trace: [ 223.751571] [] __report_bad_irq+0x3d/0xe0 [ 223.751584] [] note_interrupt+0x135/0x190 [ 223.751588] [] handle_irq_event_percpu+0xaa/0x210 [ 223.751592] [] handle_irq_event+0x51/0x80 [ 223.751596] [] handle_fasteoi_irq+0x6a/0x110 [ 223.751601] [] handle_irq+0x22/0x40 [ 223.751606] [] do_IRQ+0x5a/0xe0 [ 223.751610] [] common_interrupt+0x6e/0x6e [ 223.751612] [] ? enqueue_hrtimer+0x39/0xc0 [ 223.751623] [] ? arch_local_irq_enable+0xb/0xd [ 223.751627] [] acpi_idle_enter_c1+0x95/0xbf [ 223.751632] [] cpuidle_idle_call+0xc1/0x280 [ 223.751636] [] cpu_idle+0xca/0x120 [ 223.751642] [] rest_init+0x72/0x74 [ 223.751647] [] start_kernel+0x3b0/0x3bd [ 223.751652] [] x86_64_start_reservations+0x132/0x136 [ 223.751657] [] ? early_idt_handlers+0x140/0x140 [ 223.751661] [] x86_64_start_kernel+0xcd/0xdc [ 223.751663] handlers: [ 223.751667] [] usb_hcd_irq [ 223.751669] Disabling IRQ #16