[ltp] IBM wifi cards for t41p

[Stefan Schmidt]

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Hello.

On Tue, 2006-09-12 at 12:51, Alex Deucher wrote:
>=20
> If I bought the FRU 2915abg for a t41p, can anyone verify that fn-f5
> will still turn off the radio and that the wireless LED will continue
> to work?

I changed the atheros card against a 2915abg in my T40p. I needed to
change the bit inside the BIOS. Doing this from a linux system with a
selfcompiled no-1802 works very well. I had to do this three times
because my system board was replaced twice.

The wireless LED is not working anymore. :(

Perhaps it is possible with the led=3D1 parameter rom ipw2200, or with
the kernel led subsystem. Never tried, perhaps i should. ;)

Are you sure that fn+f5 toogle your wlan, not only bluetooth? IIRC it
only toogles bluetooth on my system. I now use the ibm-acpi hotkey
feature to toogle bluetooth with fn+f5 and wlan with fn+f6. Loading
and unloading the ipw2200 module is fine with me.

Another problem i run into at Linux-Kongress just 5 days ago was the
strange behaviour with channel 12 and 13 within the 2,4 GHz band.

The ipw cards have a geography region code inside the eeprom. Some
OEMs, Acer for example, cuts down the allowed channels to the smallest
subset. The ipw driver picks up this region code and do the "right"=20
channel mapping for it. Means i'm able to see the wlan during 'iwlist
scan' but not able to connect to it. But channel 12 and 13 are allowed
channel in germany. Damn FCC and stupid OEMs.

BTW, a remapping from region code to channels inside the driver fix
this problem. ;)

All in one i_m happy with this card. The driver works fine with
wpa, wpa2, NetworkManager and is integrated into vanilla kernel.

regards
Stefan Schmidt

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