eh...
sudo dmesg | grep mt7921
yep ..
chaos@doom:~$ sudo modprobe -r mt7921e
chaos@doom:~$ sudo modprobe mt7921e
chaos@doom:~$ dmesg|grep mt7921
dmesg: read kernel buffer failed: Operation not permitted
chaos@doom:~$ dmesg | grep mt7921
dmesg: read kernel buffer failed: Operation not permitted
chaos@doom:~$ sudo dmesg | grep mt7921
chaos@doom:~$ dmesg | grep mt7921
dmesg: read kernel buffer failed: Operation not permitted
Ok, please relay:
modinfo mt7996
chaos@doom:~$ modinfo mt7996
modinfo: ERROR: Module mt7996 not found.
same error for mt7921
Is this a Wifi 7 Card or Wifi 6?
WIFI 7 - earlier in the chain it was flag no support for the adapter. However Bluetooth was working.
Ah. Well, there's your problem. Mediatek has not released the drivers to the Linux kernel team for their WiFi 7 products. Until they do... There is no Linux support for it.
Given that Bluetooth was working but now is not - and it is a radio function, it may well be our attempts at getting WiFi working unhinged it.
But this also means that the bluetooth was likely just using the existing driver - which means partial support.
If this were me......
I would obtain a supported WiFI 6 dongle and just use that for radio (bluetooth and Wifi) and await Mediatek to get off their fannies and release the drivers rather than try to hold a partial radio receiver together with band-aids.
Roger that. Thanks again for the support - really appreciated.
I'll drop Sean Wang an email see if he can answer any ETA on support (if I happen to get a reply, will post here for reference).
Today's lesson: n-1 probably a better option, than newest and shiny 
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