[Bug 141396] ipw3945 hangs intermittently on Thinkpad T61

[Echo Nolan]

Public bug reported:

Binary package hint: linux-restricted-modules

The Intel Pro/Wireless 3945abg controller in my new Thinkpad T61 sometimes hangs, around once every twelve hours. I can identify no direct cause, although I have only experienced this when on line power. Any attempt to remove the ipw3945 module from the kernel after this happens also hangs, as does trying to kill -9 NetworkManager. This may be a duplicate of bug #118110, but I never see "microcode SW error detected. Restarting." in my dmesg. This is with linux-image-2.6.22-11-generic and linux-restricted-modules-2.6.22-11-generic, on Gutsy. Below is the end of /var/log/kern.log after a hang:
Sep 20 15:55:14 lappy-x86-64 kernel: [ 9873.149617] ipw3945: Error sending cmd #07 to daemon: time out after 500ms.
Sep 20 15:55:16 lappy-x86-64 kernel: [ 9874.480288] ipw3945: Error sending SCAN_ABORT_CMD: time out after 500ms.
Sep 20 15:55:16 lappy-x86-64 kernel: [ 9874.754086] ipw3945: Error sending cmd #08 to daemon: time out after 500ms.
Sep 20 15:55:17 lappy-x86-64 kernel: [ 9875.104638] ipw3945: Error sending ADD_STA: time out after 500ms.
Sep 20 15:55:17 lappy-x86-64 kernel: [ 9875.378949] ipw3945: Error sending SCAN_ABORT_CMD: time out after 500ms.
Sep 20 15:55:21 lappy-x86-64 kernel: [ 9878.457100] ipw3945: Error sending LEDS_CMD: time out after 500ms.
Sep 20 15:55:39 lappy-x86-64 kernel: [ 9897.096306] ADDRCONF(NETDEV_UP): eth1: link is not ready
Sep 20 15:56:16 lappy-x86-64 kernel: [ 9933.412673] ipw3945: Error sending LEDS_CMD: time out after 500ms.
Sep 20 15:56:17 lappy-x86-64 kernel: [ 9933.659750] ipw3945: Error sending LEDS_CMD: time out after 500ms.

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New

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ipw3945 hangs intermittently on Thinkpad T61
https://bugs.launchpad.net/bugs/141396
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