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#1 2020-05-21 04:23:14

evilrobotoverlord
Member
Registered: 2020-05-21
Posts: 3

RTL8822BE: WiFi speed drops to zero randomly

Hello, so I just installed arch a few days ago, and I have NetworkManager installed. I also have openresolv and unbound.
My WiFi adapter was working fine the day I installed arch, but on the day after that it just started experiencing this issue out of the blue.

I have the rtw88 (rtw_pci) driver, and journalctl -eu NetworkManager shows a few warnings about stuff timing out ( https://pastebin.com/9gL7QeFm ).

Running dmesg -w spams messages like these
[  963.860005] rtw_pci 0000:03:00.0: firmware failed to restore hardware setting
[ 1105.592800] rtw_pci 0000:03:00.0: failed to send h2c command

it also occasionally shows "timed out to flush queue 1".

I have Windows 10 installed on this laptop too, and it has no issues with this wifi adapter.

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#2 2020-05-21 16:26:41

evilrobotoverlord
Member
Registered: 2020-05-21
Posts: 3

Re: RTL8822BE: WiFi speed drops to zero randomly

I found out that this issue occurs more frequently when I have poorer WiFi reception. Ethernet works fine btw. Also, it's not very easy to reproduce as it just happens spontaneously.

Last edited by evilrobotoverlord (2020-05-21 16:27:24)

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#3 2022-01-03 18:43:14

KhosrawAzizi
Member
Registered: 2020-03-09
Posts: 27

Re: RTL8822BE: WiFi speed drops to zero randomly

evilrobotoverlord wrote:

I found out that this issue occurs more frequently when I have poorer WiFi reception. Ethernet works fine btw. Also, it's not very easy to reproduce as it just happens spontaneously.

I am having this same issue and have no clue how to resolve it.

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#4 2022-01-03 19:47:05

Head_on_a_Stick
Member
From: London
Registered: 2014-02-20
Posts: 7,680
Website

Re: RTL8822BE: WiFi speed drops to zero randomly

Try disabling the power management features for those modules:

# /etc/modprobe.d/rtw.conf
options rtw88-pci disable_aspm=y disable_msi=y
options rtw88-core disable_lps=y

I'm not actually sure what the MSI interrupt support does so that might not be needed.

EDIT: combine options for rtw88-pci on same line.

Last edited by Head_on_a_Stick (2022-01-03 19:49:55)

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#5 2022-01-04 03:15:24

KhosrawAzizi
Member
Registered: 2020-03-09
Posts: 27

Re: RTL8822BE: WiFi speed drops to zero randomly

Head_on_a_Stick wrote:

Try disabling the power management features for those modules:

# /etc/modprobe.d/rtw.conf
options rtw88-pci disable_aspm=y disable_msi=y
options rtw88-core disable_lps=y

I'm not actually sure what the MSI interrupt support does so that might not be needed.

EDIT: combine options for rtw88-pci on same line.

The problem is that `rtw.conf` is not a file. It is however for the other individual.

Last edited by KhosrawAzizi (2022-01-04 03:16:18)

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#6 2022-01-04 08:19:16

Head_on_a_Stick
Member
From: London
Registered: 2014-02-20
Posts: 7,680
Website

Re: RTL8822BE: WiFi speed drops to zero randomly

My suggestion was for you to create the file with that content. Or use the other methods to set options mentioned on the ArchWiki page about kernel modules.

And please don't full-quote unnecessarily.

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#7 2022-02-01 02:10:21

KhosrawAzizi
Member
Registered: 2020-03-09
Posts: 27

Re: RTL8822BE: WiFi speed drops to zero randomly

That seems to have solved my problem so far. I still experience some instability but that might be for some other reason.

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