Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years

#1

Post by Avamander » Fri, Mar 17, 2023, 4:40 PM UTC

Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years
bugzilla.kernel.org

Re: Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years

#2

Post by Arnavion » Fri, Mar 17, 2023, 4:54 PM UTC

>looks like lar_disable functionality was removed as of 5.5 kernel as a way to fix the firmware crash issue with iwlwifi, is that right?

>[...] i've tried replacing the wifi adapter but this happens on intel wireless-ac 3165, 8265, and 9260 dual band 160Mhz (currently installed adapter).

>[...] On Intel ax210ngw all 5ghz channels are disabled and cannot be used to transmit

So it's iwlwifi specifically.

>i should add that this happens on both windows and linux but at least on linux i had a way of disabling LAR so my regulatory domain gets detected properly and all the wifi channels/widths works as they should.

>[...] on all 5.3 and earlier kernels, using lar_disable=1 all my channels work and i get a full 1733mbps link speed (5ghz ch.36 at 160mhz)as shown here

So it's not a Linux-specific issue. Rather it seems to be buggy firmware, and a method that OP was relying on to work around that bug was disabled because it was causing other issues with said buggy firmware.

Re: Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years

#3

Post by villgax » Fri, Mar 17, 2023, 4:57 PM UTC

On a Ryzen 5 3600 desktop with two nvme drives running windows 10 & Ubuntu 22 unaware of each other it is 50-50 odd of either Bluetooth or WiFi not detected until a few reboots

Re: Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years

#4

Post by mydriasis » Fri, Mar 17, 2023, 5:00 PM UTC

I knew something was up. Goofy problems with wireless abound for a _long time_ with seemingly no solution.

Re: Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years

#5

Post by cf100clunk » Fri, Mar 17, 2023, 5:04 PM UTC

mydriasis wrote: post #4

I knew something was up. Goofy problems with wireless abound for a _long time_ with seemingly no solution.

I leave wavemon running in a terminal just for sport these days to see what my ax200 and ax210 are doing. It is always a mysterious surprise to see what rx and tx values might be seen at any given time.

Re: Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years

#6

Post by favaq » Fri, Mar 17, 2023, 5:08 PM UTC

mydriasis wrote: post #4

I knew something was up. Goofy problems with wireless abound for a _long time_ with seemingly no solution.

"Goofy problems [...] abound for a _long time_ with seemingly no solution" is the norm in desktop Linux.

Re: Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years

#7

Post by ChuckNorris89 » Fri, Mar 17, 2023, 5:08 PM UTC

Ironically, I run a machine with a Realtek Wifi 6 chip and it works great on Linux, despite everything I read online was that Realtek is to be avoided on Linux and Intel should be the go-to.

In a similar fashion, I was also luckier with Nvidia proprietary drivers on Linux than with AMD open source drivers.

Seems like HW on Linux really is a box of chocolates, you never know what you're gonna get.

Re: Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years

#8

Post by cf100clunk » Fri, Mar 17, 2023, 5:12 PM UTC

ChuckNorris89 wrote: post #7

Ironically, I run a machine with a Realtek Wifi 6 chip and it works great on Linux, despite everything I read online was that Realtek is to be avoided on Linux and Intel should be the go-to. In a similar fashion, I was also luckier with Nvidia proprietary drivers on Linux than with AMD open source drivers. Seems like HW on Linux really is a box of chocolates, you never know what you're gonna get.

Could you please give the dmesg and/or other relevant id for your Realtek device? I'm getting tired of these Intel ax2?0 issues. I'm not much of a Bluetooth user but does it also work well?

Re: Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years

#9

Post by lelandbatey » Fri, Mar 17, 2023, 5:13 PM UTC

The link seems to be experiencing a mysterious outage, reporting "404" when I visit the page. Other bugs seem to be fine. Not sure what's going on.

Here's a mirror: https://web.archive.org/web/20230317164517/https://bugzilla....

Re: Linux Intel WiFi driver broken with 5&6GHz bands for longer than three years

#10

Post by ChuckNorris89 » Fri, Mar 17, 2023, 5:16 PM UTC

cf100clunk wrote: post #8

ChuckNorris89 wrote: post #7

Ironically, I run a machine with a Realtek Wifi 6 chip and it works great on Linux, despite everything I read online was that Realtek is to be avoided on Linux and Intel should be the go-to. In a similar fashion, I was also luckier with Nvidia proprietary drivers on Linux than with AMD open source drivers. Seems like HW on Linux really is a box of chocolates, you never know what you're gonna get.

Could you please give the dmesg and/or other relevant id for your Realtek device? I'm getting tired of these Intel ax2?0 issues. I'm not much of a Bluetooth user but does it also work well?

I'm currently logged into Windoze for some work but I can tell you the card is a Realtek RTL8852AE.

I can pull up the dmesg info later tonight when I reboot into linux if you want.

Bluetooth works fine on it on Linux as well between my phone and my Sony headphones. No complaints from me on Fedora/Opensuse.

Out of curiosity, what issues are you having with the Intel AX chip? I also have it on my Lenovo Intel work machine running Ubuntu 22.04 and it seems OK to me.