Ive tried kernel 2.6.36-999-generic #201009180905. (mainline build)
I can confirm the bug is still present.
This occurs in the kernel log after a few mins.
-------
Sep 20 15:11:06 quantum kernel: [ 3841.280300] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 20 15:11:06 quantum kernel: [ 3841.280305] khubd D ffff880001e94cc0
0 29 2 0x00000000
Sep 20 15:11:06 quantum kernel: [ 3841.280314] ffff8800791f9c20
0000000000000046 ffff8800791f9fd8 0000000000014cc0
Sep 20 15:11:06 quantum kernel: [ 3841.280323] 0000000000014cc0
ffff8800791f9fd8 0000000000014cc0 ffff8800791f9fd8
Sep 20 15:11:06 quantum kernel: [ 3841.280329] 0000000000014cc0
ffff88007910b158 ffff88007910b160 ffff88007910adc0
Sep 20 15:11:06 quantum kernel: [ 3841.280336] Call Trace:
Sep 20 15:11:06 quantum kernel: [ 3841.280350] [<ffffffff81405e05>]
usb_kill_urb+0x85/0xc0
Sep 20 15:11:06 quantum kernel: [ 3841.280359] [<ffffffff81083090>] ?
autoremove_wake_function+0x0/0x40
Sep 20 15:11:06 quantum kernel: [ 3841.280367] [<ffffffff814060eb>] ?
usb_get_urb+0x1b/0x30
Sep 20 15:11:06 quantum kernel: [ 3841.280375] [<ffffffff81404a09>]
usb_hcd_flush_endpoint+0xc9/0x140
Sep 20 15:11:06 quantum kernel: [ 3841.280381] [<ffffffff81406c11>]
usb_disable_endpoint+0x61/0xa0
Sep 20 15:11:06 quantum kernel: [ 3841.280387] [<ffffffff81586464>] ?
_raw_spin_lock_irqsave+0x34/0x50
Sep 20 15:11:06 quantum kernel: [ 3841.280392] [<ffffffff81406c95>]
usb_disable_device+0x45/0x120
Sep 20 15:11:06 quantum kernel: [ 3841.280402] [<ffffffff813ffc8c>]
usb_disconnect+0x8c/0x100
Sep 20 15:11:06 quantum kernel: [ 3841.280408] [<ffffffff81401a47>]
hub_port_connect_change+0x397/0x6a0
Sep 20 15:11:06 quantum kernel: [ 3841.280415] [<ffffffff81401f71>]
hub_events+0x221/0x450
Sep 20 15:11:06 quantum kernel: [ 3841.280422] [<ffffffff81037dc9>] ?
default_spin_lock_flags+0x9/0x10
Sep 20 15:11:06 quantum kernel: [ 3841.280428] [<ffffffff814021dd>]
hub_thread+0x3d/0x160
Sep 20 15:11:06 quantum kernel: [ 3841.280434] [<ffffffff81083090>] ?
autoremove_wake_function+0x0/0x40
Sep 20 15:11:06 quantum kernel: [ 3841.280439] [<ffffffff814021a0>] ?
hub_thread+0x0/0x160
Sep 20 15:11:06 quantum kernel: [ 3841.280445] [<ffffffff810829b7>]
kthread+0x97/0xa0
Sep 20 15:11:06 quantum kernel: [ 3841.280453] [<ffffffff8100bea4>]
kernel_thread_helper+0x4/0x10
Sep 20 15:11:06 quantum kernel: [ 3841.280459] [<ffffffff81082920>] ?
kthread+0x0/0xa0
Sep 20 15:11:06 quantum kernel: [ 3841.280464] [<ffffffff8100bea0>] ?
kernel_thread_helper+0x0/0x10
-------
Hope this helps.
Glen.
--
USB Mouse freezes randomly but consistently
https://bugs.launchpad.net/bugs/627862
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