2.4GHz working, but 5GHz not working -- strange dmesg error

[Lennart Sorensen]

On Fri, Dec 13, 2013 at 04:46:44PM -0500, Tim Tisdall wrote:
> On Fri, Dec 13, 2013 at 11:35 AM, Lennart Sorensen
> <lsorense-1wCw9BSqJbv44Nm34jS7GywD8/FfD2ys at public.gmane.org> wrote:
> > I remember it took a long time to clue in to needing the package
> > 'wireless-regdb' to configure it to know which country I was in and
> > hence which frequencies were allowed to be tried.  Once I did install
> > that and tell it I was in Canada, then 5GHz just worked.
> 
> How did you set the country?  I have wireless-regdb installed on my
> system but not sure how to tell it I'm in Canada.  When I run 'crda'
> it says "COUNTRY environment variable not set", but "env COUNTRY=CA"
> doesn't seem to make a difference.  "iw reg get" tells me "country
> US".
> 
> I've never had my wireless adapter connect to my router at 5GHz (in
> Ubuntu) and never really knew why.  However, 5GHz is allowed in the US
> so I'm guessing there's probably something else I'm missing.

Hmm.  I am trying to remember where I put that.

If I run 'iw reg get' it says:

# iw reg get
country CA:
        (2402 - 2472 @ 40), (3, 27)
        (5170 - 5250 @ 40), (3, 17)
        (5250 - 5330 @ 40), (3, 20), DFS
        (5490 - 5710 @ 40), (3, 20), DFS
        (5735 - 5835 @ 40), (3, 30)

So it gets set somewhere.  Hmm.

It looks like the package 'crda' has something to do with it.

I am not actually sure how I made it work and if it still works the same.
I wonder if it somehow detects the information from the AP in the area,
although I have a hard time believing that,

-- 
Len Sorensen
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