On Thu, 03 Aug 2006 06:35:09 -0500, Larry Finger wrote:
> I have one other problem that I cannot document. When the wireless 
> interface is active, but never when I'm connected through the wire, 
> the machine will hang with the cpu busy. It usually happens overnight 
> when the system is idle, and the main activity is my E-mail client 
> contacting the POP servers. Unfortunately, the magic 'sysrq' key does 
> nothing, and I have to power the machine off. It makes one glad for 
> journaling file systems! Of course, any log information is lost.

Could you write details about your setup? Which bcm chip do you have
(I'll try to reproduce it with a similar chip if possible)? Do you have
SMP machine? Do you have SMP kernel? Do you have preemption enabled in
the kernel? Do you have ipv6 enabled? What type of encryption are you
using to connect to AP? Are you running wpa_supplicant?

> Any suggestions on how to provide more information?

Compile kernel with d80211 and bcm43xx debug information enabled
(CONFIG_D80211_DEBUG, CONFIG_D80211_VERBOSE_DEBUG and
CONFIG_BCM43XX_D80211_DEBUG, but _not_ CONFIG_TKIP_DEBUG and
CONFIG_HOSTAPD_WPA_TESTING). Use vga=1 kernel parameter at boot. Kill
klogd and set kernel logging to the highest level:

klogconsole -l 9 -r 1
killall klogd
echo '9 4 1 7' > /proc/sys/kernel/printk

Switch to the first console (tty1) and wait for the hang. Take a
screenshot with a camera :-)

Thanks,

-- 
Jiri Benc
SUSE Labs
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