So everyone, I made sure to look at the forum before buying a wireless usb adapter. My choice was this one, which says MTK7921AU.
After I added to my raspberry pi 4. It didn't show up in the Network > Wireless.
when I run lsusb:
Bus 001 Device 004: ID 0e8d:7961 MediaTek Inc. Wireless_Device
Filtering dmesg by vendor
# dmesg | grep 0e8d
[ 1.259889] usb 2-1: New USB device found, idVendor=0e8d, idProduct=7961, bcdDevice= 1.00
[ 1801.871697] usb 1-1.1: New USB device found, idVendor=0e8d, idProduct=7961, bcdDevice= 1.00
[ 2003.453632] usb 1-1.1: New USB device found, idVendor=0e8d, idProduct=7961, bcdDevice= 1.00
Fixed. I am not sure if the upgrade was the factor. At the beginning everything was the same and I kept installing all packages with mt79*. I think the one that made it work was kmod-mt7925u.
So I hope it helps somebody else.
Did you also manage to get WiFi 6E working? How exactly did you do it? Do you have any other tips for other MT7961 owners who find this topic via Google or a forum search?
Actually the driver that worked was another. Here is the output of the commend suggested:
driver: mt7921u
version: 6.6.73
firmware-version: ____010000-20231109190959
expansion-rom-version:
bus-info: 2-1:1.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no
I am using 2.4 GHz because of compatibility with older devices.
I don't have much more to say, the device works as expected and the coverage seems good too.