Talk:Network configuration/Wireless

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Latest comment: 31 December 2022 by Fengchao in topic rtw88 and rtw89


iwlist uses outdated interfaces, and iw works better with modern wireless drivers. Can we remove the wireless_tools options from Wireless_network_configuration#Manual_setup? Pid1 (talk) 15:11, 3 October 2015 (UTC)Reply[reply]

Many sections in Wireless_network_configuration#Troubleshooting still suggest only iwconfig commands. We need to find equivalent iw options first... -- Lahwaacz (talk) 15:21, 3 October 2015 (UTC)Reply[reply]

Setting regulatory domain

In the section Respecting the regulatory domain in my opinion the following information should be added:

Another reason for an unchanged regulatory domain after adjusting the settings can be the fact, that linux uses information about the regulatory domain provided by the access point. As far as I unterstand these information are only retrieved, if the PC is associated with the access point. For details see: [1] (subsection: Country IE processing)

—This unsigned comment is by Aluser1137 (talk) 15:21, 7 May 2016‎. Please sign your posts with ~~~~!

It says "WPA supplicant can also use a regdomain in the country= line of /etc/wpa_supplicant/wpa_supplicant.conf." I cannot find such a setting in the man page for either wpa_supplicant or wpa_supplicant.conf.

Jernst (talk) 23:49, 3 January 2018 (UTC)Reply[reply]

The page says you can use either crda or wireless-regdb. However, I only found success with crda.

PBS (talk) 17:48, 12 November 2021 (UTC)Reply[reply]


I have updated the section on the Realtek USB chipsets for AC1200/1750/1900, respectively 8812au/8821au/8814au.

I maintain two of them on the AUR and situation is complicated. But I was asked to give some insights on the state of these drivers.

Realtek drivers are a mess. Three things to consider:

  1. the driver version (4, 5.1.5, 5.2.9). It is a fair bet that the higher the better, considering the feedbacks we see on Github. However, not all chipsets are at the same level due to hal code missing (see point 3).
  2. the kernel patching level. A lot of these drivers do not work anymore because the upstream maintainer (on Github mostly) do not patch their code for the latest kernels. Thankfully the solutions are available, and it is easy to patch, but we probably need to nuke all those outdated Github repositories.
  3. the hal code. Realtek do not provide unified drivers. Hence the chipsets not having the same capabilities. So 8812, 8821 and 8814 have not been dispatched with the whole hal code for every chipset and versions are not in sync. Some people on github have done some work to add the various hal branches, but there is no one-for-all solution since it is not guaranteed that they all work with the same driver revision. Adding to that, I only have a 8812 dongle, so am unable to test for other chipsets before patching.

As of today, and to the best of my knowledge, there are a few Github repos that have the latest possible driver AND the latest kernel patches (hence do work with a rolling release distro like ArchLinux):

  • 8812au: my repo (zebulon2), forked from gordboy's repo. Firmware 5.2.9, hal code for 8812 only. I just tried to change txpower but realtek have modified the config options, so there is a bit of a power issue there. Otherwise it works fine.
  • 8821au: my repo, forked from paspro's repo. Firmware 5.1.5, hal code for both 8821 and 8812. We are stuck at 5.1.5 because of the lack of hal code for 8821 and 5.2.9. Note this also works for unint where it is more difficult. bsdfirst repo has firmware 4.3.21 and this is working for kernels 4.12/4.11 (AUR There is however a 5.1.5 repo tree from astsam. It seems he has been abale to merge the 5.1.5 and hal code for 8814 from previous series. I have suggested to the maintainer he tries this. However, he would need to add the kernel patches 4.11/4.12 because astsam has not done this yet. But if it were working 8814 users would have the driver 5 series too (which is much better). I would be happy to open a repo on Github and do this. However I have no 8814 device for testing myself, so we would have to release and ask people to give feedback.

Sorry for being very complicated, but it is indeed complicated.

Finally I'll need some guidance on how to handle the renaming scheme (I suppose we need to use 'replace' in the PKGBUILD)? Is there a guidance for naming kernel drivers?

--zeb (talk) 10:57, 6 September 2017 (UTC)Reply[reply]


Having experienced issues with the default install of unified kernel module rtl8xxxu, I am able to confirm the apparent flawless functioning of the third party rtl8723bu module, as provided by lwfinger in his repo collection. This has been the case for the last few kernel releases, and remains so, for 4.14.14-1. It should be noted that by default, the driver operates the hardware as a station and access point simultaneously. Thus will show two wireless devices when you run the 'iwconfig' or 'ip link show' commands.

Should anyone else be having issues with this particular chipset, the above is well worth trying. I'd also be interested to receive feedback.

ChrisP (talk) 14:08, 15 January 2018 (UTC)Reply[reply]

WPA2 enterprise and NetworkManager CLI

According to Wireless_network_configuration#NetworkManager, NetworkManager cannot create a WPA2 Enterprise profile with any frontend other than the graphical ones. But when googling this for someone in #archlinux-newbie, I hit this link before I saw the wiki here.

Is this or isn't this possible? (I cannot test this myself.) -- Eschwartz (talk) 17:40, 12 November 2017 (UTC)Reply[reply]

Neither can I, but best way to get attention is to add Template:Accuracy with the stack overflow link. Silverhammermba (talk) 18:10, 13 November 2017 (UTC)Reply[reply]

Wireless management rewrite

The original Wireless management section ceased to exist, instead, the page describes only the "manual setup". The only reference to the "automatic setup" (currently Network configuration#Network managers) is in the introduction, something along the way "if you want to use a network manager, go there and don't come back". There should still be an explicit section to avoid this, and also to mention combinations like (wpa_supplicant or iwd) + (dhcpcd or systemd-networkd), which you won't find on these two pages. Maybe overly long, but the intro from 2017 had a purpose which should be restored. -- Lahwaacz (talk) 20:14, 22 May 2018 (UTC)Reply[reply]

iwlwifi argument suggestion no longer does what it seems on recent kernels

I only just came across this when my laptop was only connecting to access points with a 20MHz bandwidth, in the end the Gentoo wiki had noted that on recent kernels setting the option to 1 disables 802.11ac on recent kernels. I would add a warning, but i am not sure about the etiquette regarding adding the same warning here. Ioangogo (talk) 10:41, 2 August 2020 (UTC)Reply[reply]

Observing logs: Check the journal, not the dmesg

In Network configuration/Wireless#Observing logs it is mentioned to check the dmesg and the journal. It is unnecessary to check both because the journal includes the dmesg by default. journalctl -f will show both the kernel logs and all other things in the journal. I would like to remove the mention of dmesg and replace it with journalctl.

--grep (see journalctl(5)) can also be used to grep the journal, so the user does not need to pipe it into grep (applies to other sections such as Network configuration/Wireless#Check the driver status)

NetSysFire (talk) 11:09, 2 February 2021 (UTC)Reply[reply]

I agree. While not relevant for this use case, the kernel ring buffer has a limited size so when it's full, old messages get evicted as new ones come in. Journal doesn't have this issue. -- nl6720 (talk) 11:16, 2 February 2021 (UTC)Reply[reply]
It does, but it's easily configurable and usually much larger :-) Lahwaacz (talk) 13:25, 2 February 2021 (UTC)Reply[reply]

rtw88 and rtw89

Should info be added about the rtw88 (for RTL8822BE, RTL8822CE, RTL8821CE, and RTL8723DE) [2] and rtw89 (for 8852AE) [3] drivers? (Should be present on current kernels) Archcat (talk) 16:47, 12 August 2021 (UTC) —This unsigned comment is by Archcat (talk) 15:19, 12 August 2021 (UTC). Please sign your posts with ~~~~!Reply[reply]

There is a RTW88 section now. Please check if you have any info to add. --Fengchao (talk) 06:13, 31 December 2022 (UTC)Reply[reply]