AX210 stuck on 20 MHz

supercritikal · 2026-04-14 02:24:45

I installed the Intel AX210 wifi card in my HP Elitebook 845 g8 but my wifi speed is still extremely slow compared to my phone and when I'm using Windows (15 Mbps vs 300 Mbps). I think it's a driver issue because my internet works fine when I switch to Windows (I'm dual booting).
iw dev says channel is ~5000 MHz but the width is 20 MHz, even thought the card is capable of a greater width. In addition, iw reg get returns US but it says the card is self-managed. I did run iw reg set US. My /etc/modprobe.d/iwlwifi.conf is options iwlwifi 11n_disable=1 swcrypto=1.

Does anyone know how to fix this?

StarWolf3000 · 2026-04-14 05:25:22

Why are you limiting yourself to 802.11bg?

iwlwifi 11n_disable=1

also disables 802.11ac, not just 802.11n.

And disabling 802.11n also reduces the channel width to a maximum of 22 MHz (on b) / 20 MHz (on g).

Last edited by StarWolf3000 (2026-04-14 05:27:57)

supercritikal · 2026-04-15 06:07:30

That's what the arch wiki says for iwlwifi: https://wiki.archlinux.org/title/Networ … ss#iwlwifi.
I set 11n_disable to 0 but that still kept my width at 20 MHz (and ran modprobe).

seth · 2026-04-15 07:50:32

That's a suggestion to mitigate issues w/ newer protocols - it's also fairly old and iwlwifi covers a WIDE range of issues.
Recently there've been issues w/ VHT/HT support on some routers resp. lacking proper regdomain configuration
https://wiki.archlinux.org/title/Networ … ory_domain
https://bbs.archlinux.org/viewtopic.php?id=313033
https://bbs.archlinux.org/viewtopic.php?id=312952
The main problem next to the reg domain seems w/ some ISP issued routers in Canada

Arch Linux

#1 2026-04-14 02:24:45

AX210 stuck on 20 MHz

#2 2026-04-14 05:25:22

Re: AX210 stuck on 20 MHz

#3 2026-04-15 06:07:30

Re: AX210 stuck on 20 MHz

#4 2026-04-15 07:50:32

Re: AX210 stuck on 20 MHz

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