iwl4965 panic -- tracking it down

Daniel Pittman daniel at rimspace.net
Sun Dec 23 22:51:03 GMT 2007


My Lenovo T61p, running x64 Hardy, has an Intel wireless card in it:

03:00.0 Network controller: Intel Corporation PRO/Wireless 4965 AG or
AGN Network Connection (rev 61)

Linux krosp 2.6.24-2-generic #1 SMP Thu Dec 20 17:58:55 GMT 2007 x86_64 GNU/Linux

This loads and seems to run with the iwl4965 driver, but it will panic
the kernel unpredictably if the radio is enabled and NetworkManager is

The machine doesn't have a serial port, nor any other easy to attach
output, and when I triggered the message on a console I didn't get much
usable information -- and couldn't scroll back due to the kernel panic.

I can't locate anything useful on the 'net, or in Launchpad, that
suggests a possible cause or even a possible debugging strategy.

So, what is the best way for me to help diagnose and report this
effectively?  I am happy to set up 'LKCD' or equivalent, if that will
help, with some pointers in the right sort of direction.

I have done kernel driver development before, but not for years, and
traditionally always had a serial port available.

Er, and I presume that I can't use a USB serial adapter to catch the
panic output -- but if I am wrong, please correct me.

Daniel Pittman <daniel at cybersource.com.au>           Phone: 03 9428 6922
1/130-132 Stawell St, Richmond              Web: http://www.cyber.com.au
Cybersource: Australia's Leading Linux and Open Source Solutions Company

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