Those at BSDCan 2015: please test: iwn(4) patch to buffer 5ghz frames before transmitting

[Adrian Chadd]

On 11 June 2015 at 05:03, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
> --------
> In message <CAPyFy2Cd5FgOKoTEvFNH3PHL-t0Q6roYV9nYgLK3jkBXJpe=LQ at mail.gmail.com>
> , Ed Maste writes:
>
>>I'm running with the patch at BSDCan. Failed to associate several
>>times at 5Ghz before settling on channel 11 (2462 MHz 11g ht/20). A
>>log with:
>>
>>wlandebug +assoc +state +rate
>>sysctl dev.iwn.0.debug=0x1
>
> I have had no luck getting my T430s to associate at 5GHz either, so
> much so that I started wondering if I even have 5G antennas in this
> laptop or not...
>
> wn0: <Intel Centrino Advanced-N 6205> mem 0xd1c00000-0xd1c01fff irq 17 at device 0.0 on pci3
> iwn0: iwn_read_firmware: ucode rev=0x12a80601

It's a firmware quirk that the driver never really dealt with right.
:( That NIC should be dual-band.

Try doing the above debugging (with IEEE80211_DEBUG / IWN_DEBUG
compiled in) and let me see what happens.


-adrian