Just a quick update and question in my search for Wifi 6E capability. As advised, I switched from Intel to Mediatek, installing an MT7621k card on my 2280 adapter. Nice chip. As a ‘newbie’, I tried an ‘iw list’ (for the first time!!!) and was pleasantly surprised by the capabilities.
In wiphy phy2 (the Mt7621k card): At 5.2Ghz, I saw 28 channels, but only 9 work: the others have “(radar detection)” added to the Frequencies list. If I choose one of these in the AP, I get the result of “–db”, and the corresponding radio (above it in the Wireless section of Openwrt) shows a radio frequency that is the corresponding channel in the 6 GHz range… This table is a duplicate of the 5GHz section of Wiphy phy1, so I guess it’s ‘normal’
In the 6 GHz range, 24 channels (1-93) are available (5955-6415 MHz) and 35 (97-233) are disabled. None appear to work. However, I think these are in a 5GHz section. 160 Mhz bandwidth is not supported and only 2 power settings: (default), and 255db…which Openwrt informs me is 2.4 Megawatts…
So I’m still missing 6E capability, and I’m not sure this chip has it, despite the advertising.
Can others advise on 6E? Do I need to go to mt7622? Does this mean upgrading Linux from 5.15 to 6.3+ ? (And I’ve no idea how)
Incidentally my PC is dual-boot with LinuxMint at Linux 6.2, and has an mt7621au chip (Comfast CF-953AX USB adapter). That only came to life after a small mod from “morrownr”:
the rules.d file below added to /etc/udev (remove the leading quotes)
"# https://github.com/morrownr/USB-WiFi/discussions/88
"# Upstream kernel patch included in version 6.3
"# TODO: delete this file after upgrading to kernel 6.3+
ACTION==“add”,
SUBSYSTEM==“usb”,
ENV{ID_VENDOR_ID}==“3574”,
ENV{ID_MODEL_ID}==“6211”,
RUN+="/usr/sbin/modprobe mt7921u",
RUN+="/bin/sh -c ‘echo 3574 6211 > /sys/bus/usb/drivers/mt7921u/new_id’"
