[RFT] Intel 3945abg wireless driver (wpi)

Frank Staals frankstaals at gmx.net
Tue Nov 6 09:32:08 PST 2007

Sam Leffler wrote:
> Frank Staals wrote:
>> Benjamin Close wrote:
>>> Frank Staals wrote:
>> <snip>
>>>> Everything works fine with the connection itself. Allthough 
>>>> sometimes when switching from tty9 to tty0 and back the system 
>>>> locks up. I've had it before when switching  from tty1 to tty0. 
>>>> Anyone with the same problems ?
>>>> Anyway; Great work on the driver so far :D
>>> I've similar issues and believe it might be due to the amount of 
>>> kernel printfs that are happening. Can you sysctl debug.wpi=0  and 
>>> see if the problem still exists?
>>> By chance are you using ZFS? I caught a memory modified after free 
>>> panic in zfs the other day pid was from syslogd. I'm trying to work 
>>> out if it's related.
>>> Cheers,
>>>    Benjamin
>> When setting debug.wpi to 0 it seems like the problem is gone. I'm 
>> not using ZFS by the way.  I did have a problem connecting to the AP 
>> at my university though; the driver wouldn't assosicate whatever I 
>> tried. I didn't have a chance to do some extensive testing though. It 
>> might be because of the WEP+wpa_supplicant + ca certificate method 
>> that is required to authenticate. Anyway I'll let it know if there is 
>> an actual problem with the driver itself
> Rule of thumb in debugging wireless issues (and most others for that 
> matter): simplify your config if at all possible.  In this case try 
> checking things out w/o wpa_supplicant (i.e. no crypto).
> When debugging, start at the top and work your way down to rule out 
> problems at each layer.  In this case collect a wpa_supplicant debug 
> log first, then check for issues at the net80211 layer (wlandebug, 
> wlanstats, etc.), then finally check at the driver level.
>    Sam
For at home wpi is working fine, and I indeed used the method you 
described above. Unfortunately I don't have the luxury of that extended 
testing methods at my university since I can't turn off encryption and 
the weird authentication methods there ;)

-Frank Staals

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