Arch Linux

KMacha

Member

Registered: 2025-04-24

Posts: 2

iwlwifi: Microcode SW error detected on an intel ax211 network card

Hello everyone,

I have been getting the "Microcode SW error detected. Restarting 0x0" for about four months now. and when the error occurs, I loose my WIFI connection, and have to restart the system to reconnect back. At first the issue was occurring when my laptop was further from the router, hence the signal was not as strong (around < -60 dbm), but when close to the router, and the signal was in the range of -30 dbm, the error was not happening.

Now, I have observed the error happening when I open certain applications, like chrome, or when I start using the gpu, or rather when it goes from D3Cold to D0.

I have seen various posts of a similar error, such as this one (https://bbs.archlinux.org/viewtopic.php?id=254766), and have tried adding the options that are applicable to my card such as

options iwlwifi 11n_disable=1 swcrypto=0 power_save=0
options iwlwifi uapsd_disable=1

but when they have helped in not getting the error on boot, the error still occurs as before when the gpu is started or also when the computer goes to sleep and comes back on

I have also tried setting

 pcie_aspm=off 

as a kernel parameter, as had been suggested in one of the posts, but this caused the error to happen immediately on boot.

Also, as described in the Arch Wiki (https://wiki.archlinux.org/title/Networ … are_issues) I did try downgrading the linux-firmware, and at some point I had downgraded all my packages to a certain date of about 5 months ago, thinking I had messed up something but the issue was actually more present in the downgraded versions.

I had also tried the linux-zen and linux-lts kernels at some point but the error also occured in them.

The kernel I am currently using
output of (uname -rv)

6.14.3-arch1-1 #1 SMP PREEMPT_DYNAMIC Sun, 20 Apr 2025 12:38:52 +0000

output for lspci -k for the network card

00:14.3 Network controller: Intel Corporation Raptor Lake-S PCH CNVi WiFi (rev 11)
	DeviceName: WLAN
	Subsystem: Intel Corporation Device 0094
	Kernel driver in use: iwlwifi
	Kernel modules: iwlwifi

The gpu in the system if necessary as the error occurs when it comes online at times

GPU 0: NVIDIA GeForce RTX 4060 Laptop GPU (UUID: GPU-1daa1386-0a22-d134-3e92-2db1b12cfcdb)

Here is the complete journal output for a scenario where the graphics card started up
https://0x0.st/8VV6.txt

Here is another for when the laptop had gone to sleep
http://0x0.st/8VV0.txt

Any Help will be highly appreciated, thank you.