Comment 22 for bug 84762

I can confirm such a problem: USB mouse freezes randomly. No hint in dmesg at that time. After unplugging, the following appears:

[ 1452.009000] usb usb2: usb auto-resume
[ 1452.009000] usb usb2: finish resume
[ 1452.010000] hub 2-0:1.0: hub_resume
[ 1452.010000] ehci_hcd 0000:00:02.1: resume root hub
[ 1452.022000] hub 2-0:1.0: state 7 ports 10 chg 0000 evt 0000
[ 1452.022000] usb 2-10: usb auto-resume
[ 1452.048000] ehci_hcd 0000:00:02.1: GetStatus port 10 status 001005 POWER sig=se0 PE CONNECT
[ 1452.059000] usb 2-10: finish resume
[ 1452.059000] hub 2-10:1.0: hub_resume
[ 1452.059000] ehci_hcd 0000:00:02.1: reused qh dd04e100 schedule
[ 1452.059000] usb 2-10: link qh256-0001/dd04e100 start 255 [1/0 us]
[ 1452.060000] hub 2-10:1.0: state 7 ports 4 chg 0000 evt 0000
[ 1454.061000] hub 2-10:1.0: hub_suspend
[ 1454.061000] usb 2-10: unlink qh256-0001/dd04e100 start 255 [1/0 us]
[ 1454.062000] usb 2-10: usb auto-suspend
[ 1456.073000] hub 2-0:1.0: hub_suspend
[ 1456.073000] usb usb2: usb auto-suspend
[ 1498.726000] hub 1-4:1.0: state 7 ports 4 chg 0000 evt 0002
[ 1498.731000] hub 1-4:1.0: port 1, status 0100, change 0001, 12 Mb/s
[ 1498.731000] usb 1-4.1: USB disconnect, address 7
[ 1498.731000] usb 1-4.1: unregistering device
[ 1498.731000] usb 1-4.1: usb_disable_device nuking all URBs
[ 1498.731000] ohci_hcd 0000:00:02.0: shutdown urb dfdf5bc0 pipe 40408780 ep1in-intr
[ 1499.736000] ohci_hcd 0000:00:02.0: IRQ INTR_SF lossage
[ 1499.736000] ohci_hcd 0000:00:02.0: leak ed dfddb1c0 (#81) state 0 (has tds)

After plugging the mouse back in, it still does not work. Any new usb devices will be ignored. USB seems kind of inaccessible, though other existing devices (keyboard etc) still work. lsusb command hangs silently.

I am going to try unloading ohci-hcd when the problem appears next. Boot options also remain to be tested.

The kernel ist custom built based on ubuntus linux-source-2.6.20-16.29. The only change I made was to activate verbose usb debugging messages.

This is what lsusb showed before unplugging the mouse:

Bus 002 Device 003: ID 0409:0059 NEC Corp. HighSpeed Hub
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 009: ID 06cb:0009 Synaptics, Inc. Composite TouchPad and TrackPoint
Bus 001 Device 008: ID 04b3:3018 IBM Corp. UltraNav Keyboard
Bus 001 Device 007: ID 046d:c002 Logitech, Inc. M-BA47 [MouseMan Plus]
Bus 001 Device 006: ID 04b3:3016 IBM Corp. UltraNav Keyboard Hub
Bus 001 Device 001: ID 0000:0000