Fwd: MC7455 in X220 with ModemManager 1.6.4

[Dominik Strnad]

Hi Bjorn,

I did the same trick when I installed new wireless card in my older X220 -
after flashing modified FRU white-listed BIOS I had to load BIOS default to
get my card working, but there was slight difference - the card was showing
in the rfkill listing as HW blocked. As I remember correctly MC7455 is not
listed in rfkill at all, which is kind of strange... But I will double
check it tomorrow as I do not have NB with me right now. Thank you anyway
for suggestion, l will post rfkill list here.

BR

On Wed, Jun 7, 2017 at 9:38 PM, Bjørn Mork <bjorn at mork.no> wrote:

> Dominik Strnad <litinoveweedle at gmail.com> writes:
>
> >> Oh, hum. See, there you may have a problem. When we query the "operating
> >> mode" from the device, it is telling us that it is in "low-power" mode
> due
> >> to "hardware restricted mode". Maybe you do need to play with the rfkill
> >> pins as well?
> >>
> >
> > I can test that, but strange is, that WWAN card is not listed in "rfkill
> > list all" listings which is strange.... But I will double check this. and
> > also I can isolate PIN 20. But how I could validate, that low power mode
> is
> > because of external hw rfkill signal?
>
> Don't know if this is relevant, but I seem to remember similar problems
> on my X301 when switching modems.  IIRC the BIOS cached whether or not a
> modem was installed, and I had to reset this somehow after installing a
> new modem to get rfkill working again.  My memory is a bit hazy as
> always, but I *think* I simply did a "load BIOS defaults" or whatever it
> was called in the BIOS setup.
>
> Might be worth a try before messing with the pin.
>
>
> Bjørn
>
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