I just bought the exact same card (MT7921K) but I'm only getting 20-30Mbps. Do you know what the issue might be? I'm running 22.03 in Proxmox 7. I tried with my MacBook Air as well as a Windows machine with AX200. It seems the bit rate is stuck at 54Mbps max and Windows is reporting it's using 802.11a instead of ac or ax that I set it to.
EDIT:
I found the problem. Apparently I disabled WMM mode without reading the text below that clearly warns about possible limitations.
Similar question: I have a Turris Omnia, which has mPCIe slots. I'm thinking to replace the 2.4GHz card with a Wifi 6e card. Any suggestions? Apparently the AW7915-NPD works but I can't find it from any seller I'd trust in the US (e.g., Amazon or similar top-tier site with a reasonable return policy). Unfortunately most cards on Amazon don't reveal their true chip set, so it's a long slog through reviewer comments looking for someone who runs Linux.
I just spent 30 minutes on Amazon. It seems 99% of cards use an Intel chipset requiring iwlwifi drivers which aren't in the kernel until 5.10. I'm still running a 5.4 kernel due to being on 22.03 due to unrelated issues that boil down to nftables/firewall4 don't work with 3 packages I use.
I just installed cheap MT79231K WiFi6E card in my x86 box and it works fine in AP mode in 802.11ax mode (with MT7921E) driver. It probably works in 6GHz band as well but I have no device to test it with.
I tested it with iperf3 client on 80MHz channel with iPhone 13 to iperf3 server running on router itself. I was able to hit 800Mbit/sec. I believe I paid 12 buck for the card and couple bucks more for M.2 to mini PCI-E
Sorry for not being very clear.
I was testing the card it using an old Archlinux live ISO released last year in july 2022 and initially the dmesg log showed a message
ath11k_pci: probe of 0000:02:00.0 failed with error -95
Then I tried then with a recent Archlinux ISO running kernel 6.2.13 and the card is now detected properly and firmware is loaded
# ip addr show wlan0
7: wlan0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 00:0e:8e:bc:49:af brd ff:ff:ff:ff:ff:ff
I have a new question now
In the specification it is saying that it supports DBDC (Dual-band, Dual-concurrent) mode, but with Tri-band capability (2.4GHz, 5GHz, and 6GHz). WNFQ-269AX(BT) is able to concurrently run 2.4GHz with 5GHz, or 6GHz.
I'm not sure how to enable DBDC so I can run two SSID concurrently one for 2.4 GHz and another for 5/6Ghz using this wireless card.
I plan to use it on OpenWRT in AP mode on an x86 PC.
I've had fun wit similiar card, just installed all qc drivers and it magicaly showed up, but i've runned out space on my ssd (need to resize partition) and cannot get rest of packages needed to make it work, maybe later today i'll find some time to play with this setup since x86 with wireless card is the only way to get some real speeds not slowed down because of some not supported or not working hw accelerations in openwrt.
This is the output of the iw phy command. I uploaded the text output to pastebin since it was large and I could not add it here.
[https://pastebin.com/H75GjyJZ]