Arch Linux

computer_spider

Member

Registered: Yesterday

Posts: 3

[SOLVED]Slow WiFi on RTW89 chip

To begin with my internet had been originally around 500-600 mbps —now I get a measly 13 mbps. I use a wireless connection using Network Manager and wpa as the back-end. The specific chip is RTL8922AE. I am unsure as to what could of caused this change as I have went to try multiple solutions. I had tried disabling power-save mode via /etc/modprobe.d/rtw.conf as well as configurations to network manager. I am using the 5 GHZ channel as well. To further note, I run a dual boot system with Windows and it has no issues with WiFi speeds, and this dual boot has been active for half a year without issue. Further on, I have downloaded RTW89 drives from another similar post to see if that would help fix the issue: https://github.com/morrownr/rtw89/. I also tried using linux-lts to see if it had been related, but it does not seem to be. Afterwards I saw no improvement. If possible could anyone help as I am entirely lost after trying numerous fixes to no avail. Also, I apologize as I am unsure what logs to post along with this as nothing seems unusual.

Last edited by computer_spider (Yesterday 23:15:29)

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 74,288

Re: [SOLVED]Slow WiFi on RTW89 chip

I run a dual boot system with Windows

3rd link below. Mandatory.
Disable it (it's NOT the BIOS setting!) and reboot windows and linux twice for voodo reasons.

I had tried disabling power-save mode via /etc/modprobe.d/rtw.conf

rtw89_pci.disable_aspm_l1=y rtw89_pci.disable_aspm_l1ss=y rtw89_core.disable_ps_mode=y

https://wiki.archlinux.org/title/Kernel_parameters

But also

lsmod | grep rtw

to make sure this isn't handled by rtw88

Ultimately please post your complete system journal for the boot:

sudo journalctl -b | nc termbin.com 9999

Behavior sounds like you're on 802.11a instead of 802.11n (or ac/x)

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

computer_spider

Member

Registered: Yesterday

Posts: 3

Re: [SOLVED]Slow WiFi on RTW89 chip

Thank you again for helping!

3rd link below. Mandatory. Disable it (it's NOT the BIOS setting!) and reboot windows and linux twice for voodo reasons.

Unfortunately, this was something I had already tried. I checked once again, but fast boot was still disabled. I also have hibernation turned off as that caused other issues at some point.

But also

lsmod | grep rtw

to make sure this isn't handled by rtw88

It does not seem to be the case. Here is the output as confirmation:

rtw89_8922ae_git       12288  0
rtw89_8922a_git        77824  1 rtw89_8922ae_git
rtw89_pci_git         126976  1 rtw89_8922ae_git
rtw89_core_git       1298432  2 rtw89_pci_git,rtw89_8922a_git
mac80211             1728512  2 rtw89_pci_git,rtw89_core_git
cfg80211             1470464  3 rtw89_core_git,rtw89_8922a_git,mac80211
rfkill                 45056  8 rtw89_core_git,bluetooth,cfg80211

Ultimately please post your complete system journal for the boot:

sudo journalctl -b | nc termbin.com 9999

As per requested; however, I was unable to use termbin. I doubt it relates to this issue but nevertheless I mention it. I even tested on my laptop and seem to be unable to upload to termbin. I hope pastebin is acceptable.

https://pastebin.com/KPR9xURz

Behavior sounds like you're on 802.11a instead of 802.11n (or ac/x)

I am unsure how to test this or if this is related, but seemingly this issue is not isolated to my computer. I thought this issue was bizarre due to no updates being made on my computer when this issue began recently, last few days. It seems others are experiencing the same issue, that is Xfinity (Comcast). Unfortunately, I do not have ease of access to manipulate Xfinity settings. To further add, my laptop, that is also Linux, has slow WiFi as well now, despite being able to reach higher download speeds on other networks. I am unsure if this issue can be resolved via these forums. I apologize if this is now the inappropriate place to post this issue.

The aforementioned thread complaining about Xfinity wifi issues:

https://www.reddit.com/r/Comcast_Xfinit … computers/

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 74,288

Re: [SOLVED]Slow WiFi on RTW89 chip

Please disable systemd-networkd

But

Apr 09 11:08:35 silk kernel: wlan0: required MCSes not supported, disabling HT

Welcome to the late 90ies there on 802.11a
You're the second one this week and the exact band of "freq=5220 MHz" … Canada or Trumpistan?

Apr 09 11:08:26 silk kernel: cfg80211: failed to load regulatory.db
…
Apr 09 11:08:32 silk wpa_supplicant[1043]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=BEACON_HINT type=UNKNOWN
Apr 09 11:08:32 silk wpa_supplicant[1043]: wlan0: CTRL-EVENT-REGDOM-BEACON-HINT before freq=5200 max_tx_power=2000 no_ir=1
Apr 09 11:08:32 silk wpa_supplicant[1043]: wlan0: CTRL-EVENT-REGDOM-BEACON-HINT after freq=5200 max_tx_power=2000

https://wiki.archlinux.org/title/Networ … ory_domain

Completely unrelated sidebar

Apr 09 11:08:37 silk sddm-helper[1052]: Starting Wayland user session: "/usr/share/sddm/scripts/wayland-session" "uwsm start -e -D Hyprland hyprland.desktop"

uwsm is heavily discouraged by upstream hyprland

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How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

computer_spider

Member

Registered: Yesterday

Posts: 3

Re: [SOLVED]Slow WiFi on RTW89 chip

Thank you, it seems the issue has been resolved.  I am hitting ~700 mbps again. Which is faster than the windows counter part.

As suggested I disabled systemd-network, removed uwsm, and downloaded wireless-regdb and uncommented the US line for my case, or Trumpistan as I just learned from this post.

Rio6

Member

Registered: 2016-01-16

Posts: 12

Re: [SOLVED]Slow WiFi on RTW89 chip

I'm also getting the same issue right now, not sure when it started but must be recent.

[    8.714138] wlan0: required MCSes not supported, disabling HT
[    8.719361] wlan0: authenticate with 72:13:01:87:79:82 (local address=60:f2:62:f8:50:02)
[    8.720445] wlan0: send auth to 72:13:01:87:79:82 (try 1/3)
[    8.755643] wlan0: authenticated
[    8.756790] wlan0: associate with 72:13:01:87:79:82 (try 1/3)
[    8.769045] wlan0: RX AssocResp from 72:13:01:87:79:82 (capab=0x1011 status=0 aid=19)
[    8.773648] wlan0: associated

Also on 5220MHz in Canada.  Something's up with Canadian regulatory it seems like

$ iw dev wlan0 info
Interface wlan0
        ifindex 3
        wdev 0x1
        addr 60:f2:62:f8:50:02
        ssid
        type managed
        wiphy 0
        channel 44 (5220 MHz), width: 20 MHz (no HT), center1: 5220 MHz
        txpower 22.00 dBm
        multicast TXQ:
                qsz-byt qsz-pkt flows   drops   marks   overlmt hashcol tx-bytes        tx-packets
                0       0       0       0       0       0       0       0               0

I downloaded wireless-regdb and enabed CA, but it doesn't seem to fix it. My wifi card shows up as

00:14.3 Network controller: Intel Corporation Comet Lake PCH-LP CNVi WiFi

though so something might be different?

Rio6

Member

Registered: 2016-01-16

Posts: 12

Re: [SOLVED]Slow WiFi on RTW89 chip

Looks like many people who's using Xfinity/Rogers is having the same issue

https://linuxcommunity.io/t/intel-ax210 … os/6708/30
https://www.reddit.com/r/Comcast_Xfinit … computers/
https://www.reddit.com/r/Comcast_Xfinit … _breaking/
https://www.reddit.com/r/Rogers/comment … t_54_mbps/