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Problem: No WiFi 6 with MT7921 USB Wifi stick
#1
I bought a new WiFi USB stick with WiFi 6. Unfortunately, WiFi 4 only works although I am only 2 meters from the Xiaomi 6500 BE router.

It is a MediaTek MT7921 USB WIFI stick that should be compatible with bookworm.
https://de.aliexpress.com/item/100500707...pt=glo2deu

Maybe someone can help me, or there is a driver that I can install with SSH.
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#2
Not that this will solve your issue, but being too close to the router does not always mean "better signal"; sometimes has the opposite result...
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#3
(05-11-2025, 05:13 PM)schwidi Wrote: I bought a new WiFi USB stick with WiFi 6. Unfortunately, WiFi 4 only works although I am only 2 meters from the Xiaomi 6500 BE router.

It is a MediaTek MT7921 USB WIFI stick that should be compatible with bookworm.
https://de.aliexpress.com/item/100500707...pt=glo2deu

Maybe someone can help me, or there is a driver that I can install with SSH.

Where does it state that its compatible with PiOS Bookworm?
Enjoy the Music!
moodeaudio.org | Mastodon Feed | GitHub
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#4
https://github.com/morrownr/USB-WiFi/blo...hipsets.md

https://github.com/morrownr/USB-WiFi/issues/455
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#5
(Yesterday, 04:58 AM)schwidi Wrote: https://github.com/morrownr/USB-WiFi/blo...hipsets.md

https://github.com/morrownr/USB-WiFi/issues/455

This link that you provided https://github.com/morrownr/USB-WiFi/issues/455 talks about wifi 6 support so I think your best bet would be to post to that issue. Mention that the Linux kernel version is 6.12.20
Enjoy the Music!
moodeaudio.org | Mastodon Feed | GitHub
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#6
OK, thank you.
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#7
I actually also bought a usb WiFi dongle based on this chipset as well (yet to receive). Apparently it's supported since a way earlier Linux kernel. I'll report back when I have received and tested it.

https://github.com/morrownr/7612u

Edit: not exactly the same dongle i now see. The one I purchased does not do WiFi 6....

7612U vs 7621...
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#8
I had a Comfast WiFi Stick with 7612u chip before. Worked perfectly as far as the blue operation LED does not light up.
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#9
@schwidi

Tim's suggestion is the right one.

Nevertheless, I'm curious. You haven't yet told us actionable details like

- what release of moOde?
- what model Pi?
- what physical USB port is your external adapter plugged into? (note the comments about this in the USB-WIFI reference you provided)
- if this model Pi has an integrated WiFi adapter, then how do you know which adapter is being used in the connection to your Access Point---integrated or external?

What is the output from executing the following command in a terminal window

Code:
iw list | grep Cap


Note the output from 'iw list' is quite voluminous which is why I suggested grep'ing on just the Cap(abilities). You could instead post the entire output.


Regards,
Kent
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