[Solved] WRT3200ACM - stable, US, can't use DFS channels

[thewmo]

Running a new WRT3200ACM with stable 17.01.4 + the Winbond patch (applied manually and rebuilt ... looking forward to a new stable). I'm in the US.

No complaints so far, other than I can't seem to use any of the DFS-required 5GHz channels. Attempting to use any of those channels (change config, run wifi reload) disables the radio and logs this:

Mon Apr 30 03:17:40 2018 daemon.warn hostapd: wlan0: IEEE 802.11 Configured channel (52) not found from the channel list of current mode (2) IEEE 802.11a
Mon Apr 30 03:17:40 2018 daemon.warn hostapd: wlan0: IEEE 802.11 Hardware does not support configured channel

Same result for channel 100. These channels are all in the output of iw phy phy0 channels.

Corresponding config:

config wifi-device 'radio0'
        option type 'mac80211'
        option channel '52'
        option hwmode '11a'
        option path 'soc/soc:pcie-controller/pci0000:00/0000:00:01.0/0000:01:00.0'
        option htmode 'VHT80'
        option disabled '0'

I can't complain about performance on channel 36 but would like to know what is wrong. Searching the forums I find similar issues but usually for people outside the US.

[JW0914]

IIRC, there's posts in other threads regarding DFS and the WRT AC Series... Forum search should pop up something.

• Just a general FYI, 5.7GHz network should use the highest possible channels, and Auto should never be utilized. If you live in the US, try 157.

[lantis1008]

I’m pretty sure for this device you need to explicitly set your US country option to make it happy on all radios

Also to save yourself a headache, remove the third radio driver if you compiled it in. OR don’t change the country on that one.

[thewmo]

I had read other threads that spoke of purposefully not setting a country option with this radio, but I went ahead and set it for all three radios (to 'US') and rebooted, and I'm in business. Thanks @lantis1008.

Now, as it happens the radio rather quickly detects radar and changes channels but ... at least it seems to be working as intended.

[tmomas]

If your question has been answered, please consider marking this topic as [Solved].

[thewmo]

Thanks. I looked for a way to do that and didn't find one, but it appears simply changing the title and prepending [Solved] is the practice? In any case, I've done as much. Thanks.