Thanks to Michael for his helpful advice. I've narrowed the problem down somewhat, but Wifi still doesn't work on Gentoo, tho' it does on Mint + SR.
The difference seems to be that when I enter 'lshw -class network' in Mint, I get "network | description : Wireless interface ... ", but in Gentoo it says "network | description : Network controller ... ". Also, under "configuration:", Mint says "broadcast=yes, driver=nt7921e, driver_version=5.15.0-generic, firmware=______919999-20220209 150915, latency=0, multicast=yes, wireless=IEEE 802.11", whereas Gentoo says only "driver=mt7921e, latency=0". 'lsmod' gives the same result on both systems, incl firmware. It looks as if modules + firmware are all installed, but for some reason Gentoo isn't recognising the device as Wifi. What might be missing ? BTW there appears to be a pkg 'rfkill' : on Mint 'rfkill' reports "Bluetooth hci0 | wlan phy0", both unblocked. Any further advice wb most welcome (smile). -- ========================,,============================================ SUPPORT ___________//___, Philip Webb ELECTRIC /] [] [] [] [] []| Cities Centre, University of Toronto TRANSIT `-O----------O---' purslowatchassdotutorontodotca