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Multiple devices discussion #715
Description
I'd like to have two 8812bu USB devices, one receiving and one acting as an access point. Ultimately, I'd like clients connecting to the access point to be proxied through a virtual interface via a VPN. Is this possible, and won't two Wi-Fi devices in adjacent USB ports conflict?
Activity
morrownr commentedon Apr 20, 2026
Hi @libmonsoon-dev
They shouldn't if using modern mac80211 drivers.
Probably not the chip I would select in this situation.
Do you know how to set this up?
libmonsoon-dev commentedon Apr 21, 2026
I didn't do any deep research, just bought the first one I came across. It works perfectly fine in client mode, but now I'm considering buying another one for an access point, and I'm open to other options.
At the moment, the advantage of buying the same device is that the system already has a driver for it. My distribution still has an old kernel without built-in support.
I've read the documentation, but haven't tried it yet because I don't have two devices in stock yet.
morrownr commentedon Apr 21, 2026
@libmonsoon-dev
I am more critical of wireless hardware than most folks are. That chip could do well for you in your use case given the new modern drivers.
What kernel version are you using?
libmonsoon-dev commentedon Apr 21, 2026
6.8.0-107-generic
morrownr commentedon Apr 21, 2026
That is a fairly modern kernel. You can even run WiFi 7 adapters based on the mt7925 chip. I don't know what your budget is but you might look at the AXE3000 section The Plug and Play List:
https://github.com/morrownr/USB-WiFi/blob/main/home/USB_WiFi_Adapters_that_are_supported_with_Linux_in-kernel_drivers.md
The Brostrend adapter in that AXE3000 section is a very heavy seller. It was designed for and is advertised for Linux. Note that the ad does not even say anything about Windows... but it will work on Windows if Windows users download and install the driver. Funny thing is that the adapter is Plug and Play on Linux with kernel 5.18 or later.
libmonsoon-dev commentedon Apr 21, 2026
I have a fairly old motherboard that doesn't have M.2 support, but it does have PCI-E 2.0 x1. Should I buy the Mediatek MT7921K? The Mediatek MT7922 doesn't seem to be fully supported by my kernel version.
libmonsoon-dev commentedon Apr 22, 2026
In the end, I settled on the Mediatek MT7922 because the new LTS version of Ubuntu with kernel version 7.0 is coming out tomorrow.
morrownr commentedon Apr 22, 2026
I have a mt7922 based PCIe card in the box I am working on right now. It is a good chip. I average speeds of about 1.5 Gbps. That is checked with iperf3.
The box I am on is 13 years old. It is an old intel i7 chip based board and still has plenty of power for what I do.
libmonsoon-dev commentedon May 10, 2026
The access point works stably in my case even with kernel version 6.8.0, and there were no conflicts with another device in client mode.
Thanks for your help.
morrownr commentedon May 10, 2026
Glad it worked out. I think you will find the mt7922 card to be good. One thing I did is replaced the external antennas with a new set of better quality.