FS#3061 - Wi-Fi: Cannot set country code on AVM FRITZ 1750E

[openwrt-bot]

sindastra:

It is not possible to set the country code on both 2.4 and 5 GHz.

Device: AVM FRITZ!WLAN REPEATER 1750E (target ath79 generic)
Software version: OpenWrt SNAPSHOT r13136-ad27c133eb
Steps to reproduce:

Console:
Execute iw reg set DE and then iw reg get, and see how "global" sets to "DE" but phy#1 and phy#0 remain on "US".

LuCI:
Sign in to LuCI, go to Network>Wireless (click Edit and then the "Advanced" tab) try to change the country code on either Wi-Fi device/frequency to "DE" and see how it resets to "driver default" after apply, which seems to be "US".

[openwrt-bot]

adrianschmutzler:

From my experience, I've never been able to change the phy settings, but only the global reg domain. On all my devices, phy has always stayed at US.

When I change it via LuCi, I get the same result. However, it seems the global setting is the one being applied, as it's more constrained.