[ltp] IBM wifi cards for t41p

[Alex Deucher]

On 9/12/06, Stefan Schmidt <stefan@sostec.de> wrote:
> Hello.
>
> On Tue, 2006-09-12 at 12:51, Alex Deucher wrote:
> >
> > 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. :(

Was it an IBM FRU 2915 or a generic one?  I'd rather not deal with the
no-1802 stuff.

>
> Perhaps it is possible with the led=1 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.

On my t41p fn-f5 seems to toggle bluetooth and the wifi radio.  I've
never tried fn-f6, but's it's not marked lke the other fn-f* keys.
I'm letting the bios control the fn keys.

>
> 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"
> 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.

Cool.

Alex

>
> regards
> Stefan Schmidt
>
>
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