[RPi] WiFi Issues -> Try disabling 802.11ax mode on router

    Hi,

    Just wanted to record this here just in case it helps someone.


    i run libreelec/kodi on rpi’s. I sometimes had issues with wifi, the dreaded ‘invalid password’ that seems to come from weak signal strength etc. Yesterday i updated one of my pi’s to 12.2.1 and got this problem again but this time couldn’t fix it.


    Then I noticed that a setting in my router had a warning. It seems having 802.11ax mode enabled can cause problems with certain systems. So I disabled it and voila, the pi connected immediately after starting up.

    Cheers,

    Dennis

    The Broadcom chips used in RPi4/RPi5 support WiFi 5 (802.11ac) but not WiFi-6 (802.11ax) so in theory disabling that feature in the router should not impact them as you're disabling something they cannot use. That said, this is radio where everything interferes with everything else so perhaps disabling 'ax' results in better 'ac' or 'n' or whatever standard the cards are connecting at.

    NB: LE13 nightlies have improvements that result in nobody reporting 'invalid-key' there for some time.