kernel 3.8.0.28-generic problem started
syslog output:
Aug 2 09:39:15 u kernel: [ 2268.769492] usb 1-8: new high-speed USB
device number 11 using ehci-pci
...
Aug 2 09:44:26 u udevd[3606]: timeout: killing '/sbin/blkid -o udev -p /dev/sdb' [3717]
Aug 2 09:44:57 udevd[3606]: last message repeated 30 times
Aug 2 09:44:57 u kernel: [ 2610.106976] usb 1-8: reset high-speed USB device number 11 using ehci-pci
Aug 2 09:44:57 u udevd[3606]: timeout: killing '/sbin/blkid -o udev -p /dev/sdb' [3717]
Aug 2 09:45:28 udevd[3606]: last message repeated 30 times
Aug 2 09:45:28 u kernel: [ 2641.011767] usb 1-8: reset high-speed USB device number 11 using ehci-pci
Aug 2 09:45:28 u kernel: [ 2641.146199] sd 11:0:0:0: [sdb] Attached SCSI removable disk
Aug 2 09:45:28 u udevd[3606]: '/sbin/blkid -o udev -p /dev/sdb' [3717] terminated by signal 9 (Killed)
Aug 2 09:45:28 u udevd[3606]: timeout 'udisks-part-id /dev/sdb'
kernel 3.5.0-38-generic is the last known one that USB works.