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kryr-su

Member

Registered: 2023-01-14

Posts: 2

PCE-AX3000 wifi limited bandwith

Can you help me set up this adapter?

I've used to run ethernet cables everywhere distrusting everything that is wireless; but, recently I had to move my desk to a new spot, and since my phone gets perfect Wifi6 coverage almost everywhere I though to give it a chance.

I'm testing connection with speedtest.net (site, not app). The uplink should be capable of doing 600MB/s down and 60MB/s up with 5ms delay to ISP (it is fiber). The PCE-AX3000 is a new purchase for the desktop box, never tested before. I have work laptop which also reaches acceptable throughput around the house, like my android phone does.

The new wifi card gave me useless and unstable 4MB/s down 4MB/s up with a big 100ms delay.
This can't be right, since my phone placed right next to the computer gives 250-300MB/s down with 5-8ms.

The controller is reported as:

  17:00.0 Network controller: Intel Corporation Wi-Fi 6 AX200 (rev 1a)
  	DeviceName: Broadcom 5762
  	Subsystem: Intel Corporation Wi-Fi 6 AX200NGW
  	Kernel driver in use: iwlwifi
  	Kernel modules: iwlwifi

I have tried combinations of:

  options iwlwifi 11n_disable=8 swcrypto=1
  options iwlwifi 11n_disable=1

First one 11n_disable=8 gives a massive improvement to the upload, and does expected 60MB/s, but the download speed is still choking around 4MB/s.
Second one 11n_disable=1 gives a stable 40MB/s down but, a unstable and limited 1-4MB/s upload.
The swcrypto=1 doesn't affect anything.

I also switched from wpa_supplicant to iwd without any improvement.

Looking at the journal I see:

Jan 14 11:04:14 ten kernel: iwlwifi 0000:17:00.0: iwlmvm doesn't allow to disable HW crypto, check swcrypto module parameter

Jan 14 11:07:00 ten kernel: ------------[ cut here ]------------
Jan 14 11:07:00 ten kernel: WARNING: CPU: 15 PID: 570 at drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c:711 iwl_init_he_hw_capab+0x375/0x390 [iwlwifi]
Jan 14 11:07:00 ten kernel: Modules linked in: pcc_cpufreq(-) libdes ecb algif_skcipher edac_mce_amd cmac md4 snd_hda_codec_realtek algif_hash kvm_amd iwlmvm(+) bnep snd_hda_codec_generic >
Jan 14 11:07:00 ten kernel:  nvidia_drm(POE) nvidia_uvm(POE) nvidia_modeset(POE) video wmi nvidia(POE)
Jan 14 11:07:00 ten kernel: CPU: 15 PID: 570 Comm: modprobe Tainted: P           OE      6.1.4-arch1-1 #1 b56a0be67d6a5f69f99015da4a908cae98ee5acc
Jan 14 11:07:00 ten kernel: Hardware name: MSI MS-7A37/B350M MORTAR ARCTIC (MS-7A37), BIOS A.D0 04/27/2018
trimmed here, there is a stacktrace and registry dump

Jan 14 11:06:59 ten kernel: iwlwifi 0000:17:00.0: loaded firmware version 72.daa05125.0 cc-a0-72.ucode op_mode iwlmvm

kryr-su

Member

Registered: 2023-01-14

Posts: 2

Re: PCE-AX3000 wifi limited bandwith

I decided to give it another try, and commented out all options for the iwlwifi, restarted and checked: iwctl station wlan0 show.
iwctl was claiming TxMod 802.11ax but there was nothing for the RxMod --- which seems really suspicious to me.
I have finally decided to just block 802.11ax with "options iwlwifi disable_11ax=Y" and now I'm on solid 802.11ac up and down, which is good enough.

If anyone has an idea what I can try to make the Wifi6 work I will be happy to try. If no one replies I will close the thread.

rab0171610@gmail.com

Member

Registered: 2022-11-05

Posts: 20

Re: PCE-AX3000 wifi limited bandwith

This may or may not help.  Some Linux users report turning off power save will increase the network speed:
https://gist.github.com/jcberthon/ea8cf … 5344bc8b55
Create the file /etc/NetworkManager/conf.d/wifi-powersave-off.conf
With the following contents:

# File to be place under /etc/NetworkManager/conf.d
[connection]
# Values are 0 (use default), 1 (ignore/don't touch), 2 (disable) or 3 (enable).
wifi.powersave = 2

Then reboot or restart network manager:

sudo systemctl restart NetworkManager