Comment 43 for bug 1242321

This is the log when I connect a device:

28/04/15 23:01:59 kubuntu-pc-allard kernel [22930.437785] usb 5-2: new high-speed USB device number 2 using xhci_hcd
28/04/15 23:01:59 kubuntu-pc-allard kernel [22930.437989] usb 5-2: Device not responding to set address.
28/04/15 23:02:16 kubuntu-pc-allard kernel [22935.638860] xhci_hcd 0000:00:10.0: Timeout while waiting for address device command
28/04/15 23:02:16 kubuntu-pc-allard kernel [22946.851362] xhci_hcd 0000:00:10.0: Stopped the command ring failed, maybe the host is dead
28/04/15 23:02:16 kubuntu-pc-allard kernel [22946.887284] xhci_hcd 0000:00:10.0: Host not halted after 16000 microseconds.
28/04/15 23:02:16 kubuntu-pc-allard kernel [22946.887289] xhci_hcd 0000:00:10.0: Abort command ring failed
28/04/15 23:02:16 kubuntu-pc-allard kernel [22946.887444] xhci_hcd 0000:00:10.0: HC died; cleaning up
28/04/15 23:02:16 kubuntu-pc-allard kernel [22946.888511] [sched_delayed] sched: RT throttling activated
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] The canary thread is apparently starving. Taking action.
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] Demoting known real-time threads.
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] Successfully demoted thread 2416 of process 2412 (n/a).
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] Successfully demoted thread 2415 of process 2412 (n/a).
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] Successfully demoted thread 2414 of process 2412 (n/a).
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] Successfully demoted thread 2412 of process 2412 (n/a).
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] Successfully demoted thread 2283 of process 2254 (n/a).
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] Successfully demoted thread 2282 of process 2254 (n/a).
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] Successfully demoted thread 2271 of process 2254 (n/a).
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] Successfully demoted thread 2254 of process 2254 (n/a).
28/04/15 23:02:16 kubuntu-pc-allard rtkit-daemon[2256] Demoted 8 threads.
28/04/15 23:02:16 kubuntu-pc-allard kernel [22947.088557] usb 5-2: device not accepting address 2, error -108
28/04/15 23:02:21 kubuntu-pc-allard kernel [22952.085806] xhci_hcd 0000:00:10.0: Timeout while waiting for a slot
28/04/15 23:02:21 kubuntu-pc-allard kernel [22952.085816] xhci_hcd 0000:00:10.0: Abort the command ring, but the xHCI is dead.
28/04/15 23:02:26 kubuntu-pc-allard kernel [22957.083055] xhci_hcd 0000:00:10.0: Timeout while waiting for a slot
28/04/15 23:02:26 kubuntu-pc-allard kernel [22957.083065] xhci_hcd 0000:00:10.0: Abort the command ring, but the xHCI is dead.
28/04/15 23:02:31 kubuntu-pc-allard kernel [22962.080239] xhci_hcd 0000:00:10.0: Timeout while waiting for a slot
28/04/15 23:02:31 kubuntu-pc-allard kernel [22962.080245] xhci_hcd 0000:00:10.0: Abort the command ring, but the xHCI is dead.