[63151.377634] usb 2-2: USB disconnect, device number 3 [63154.703029] usb 2-2: new full-speed USB device number 4 using ohci-pci [63154.986867] usb 2-2: New USB device found, idVendor=239a, idProduct=0001 [63154.986871] usb 2-2: New USB device strings: Mfr=0, Product=1, SerialNumber=0 [63154.986873] usb 2-2: Product: Adafruit Industries [63155.395258] ohci-pci 0000:00:06.0: frame counter not updating; disabled [63155.395266] ohci-pci 0000:00:06.0: HC died; cleaning up [63159.987813] usb 2-2: can't set config #1, error -110 [63159.987878] usb 2-1: USB disconnect, device number 2 [63161.397977] irq 22: nobody cared (try booting with the "irqpoll" option) [63161.397985] CPU: 0 PID: 303 Comm: systemd-udevd Tainted: G OE 3.19.0-25-generic #26~14.04.1-Ubuntu [63161.397987] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [63161.397988] ffff880035c47aa4 ffff88003fc03ce0 ffffffff817aed00 0000000000003a40 [63161.397991] ffff880035c47a00 ffff88003fc03d10 ffffffff810ce3b6 ffff88003fc03d10 [63161.397992] ffff880035c47a00 0000000000000016 0000000000000000 ffff88003fc03d60 [63161.397994] Call Trace: [63161.397996] [] dump_stack+0x45/0x57 [63161.398010] [] __report_bad_irq+0x36/0xd0 [63161.398012] [] note_interrupt+0x24c/0x2a0 [63161.398016] [] ? add_interrupt_randomness+0x3a/0x1e0 [63161.398019] [] handle_irq_event_percpu+0xae/0x1a0 [63161.398020] [] handle_irq_event+0x41/0x70 [63161.398022] [] handle_fasteoi_irq+0x82/0x140 [63161.398025] [] handle_irq+0x22/0x40 [63161.398027] [] do_IRQ+0x51/0xf0 [63161.398031] [] common_interrupt+0x6d/0x6d [63161.398034] [] ? __do_softirq+0x7f/0x270 [63161.398036] [] ? __do_softirq+0x20/0x270 [63161.398038] [] irq_exit+0x9d/0xb0 [63161.398039] [] smp_apic_timer_interrupt+0x4a/0x60 [63161.398041] [] apic_timer_interrupt+0x6d/0x80 [63161.398042] [] ? copy_process.part.26+0x13db/0x1c00 [63161.398047] [] do_fork+0xd5/0x340 [63161.398052] [] ? sock_alloc_file+0x91/0x120 [63161.398054] [] SyS_clone+0x16/0x20 [63161.398056] [] stub_clone+0x69/0x90 [63161.398057] [] ? system_call_fastpath+0x16/0x1b [63161.398059] handlers: [63161.398069] [] usb_hcd_irq [63161.398070] Disabling IRQ #22 [63161.399293] usb 2-2: USB disconnect, device number 4