Re: brcmfmac4356-pci device not seeing 2.4Ghz channel 12 and 13

Hi,

On 28-06-17 14:35, Arend Van Spriel wrote:

Op 28 jun. 2017 12:07 schreef "Hans de Goede" <hdegoede@redhat.com <mailto:hdegoede@redhat.com>>:
 >
 > Hi,
 >
 > I noticed today that my GPD Win (x86 clamshell mini laptop)
 > which uses a brcmfmac4356-pci wifi does not see an APs which
 > is using channel 13.
 >
 > I've tried updating brcmfmac4356-pci.txt changing "ccode=US"
 > to "ccode=EU" and then rebooted, but that does not help.

Some variables may be stored on the device. However, EU may not be valid. Could you try NL instead?

Yes changing it to NL fixes this. This is still a bit problematic
though. Because what are we going to put in the nvram file we want
to put in linux-firmware ?

 > I believe that the Linux wifi stack is supposed to automatically
 > figure out the country settings based on AP provided info ?

That depends. The device runs its own wifi stack which should have 802.11d support for what you describe.

 > But that does not seem to be working here ? Any hints on howto
 > debug this further would be appreciated.

You could try doing "country" iovar get somewhere in brcmf_bus_started() to check country setting in firmware.

Let me know if you still want me to do this given that ccode=NL fixes this.

Regards,

Hans