Arch Linux

hohol92

Member

Registered: 2021-03-25

Posts: 3

iwlwifi: Microcode SW error detected

I can't turn on wifi, I booted from the debian image and can now use wifi.
Here is the error log:
https://pastebin.com/XaGsgtTP
Now on the old kernel I get these errors, but after a few seconds the driver is back to work. What to do and how to roll back the driver and is it in the kernel?

Last edited by hohol92 (2021-04-03 05:14:35)

seth

Member

Registered: 2012-09-03

Posts: 51,213

Re: iwlwifi: Microcode SW error detected

Apr 03 07:49:56 xx kernel: ieee80211 phy0: Hardware restart was requested
Apr 03 07:50:06 xx kernel: iwlwifi 0000:00:0c.0: Failing on timeout while stopping DMA channel 8 [0xa5a5a5a2]
…
Apr 03 07:50:08 xx kernel: Hardware became unavailable during restart.

See https://bbs.archlinux.org/viewtopic.php?id=254766 for possible iwlwifi paramaters to avoid the firmware crashes. Smells power saving related.

---

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

hohol92

Member

Registered: 2021-03-25

Posts: 3

Re: iwlwifi: Microcode SW error detected

The problem was when the computer was charging, when it was charged, the problem disappeared.
Power save mode is disabled by default:

[root@xx ~]# cat /sys/module/iwlwifi/parameters/power_save 
N

I have included these options: 11n_disable=1 bt_coex_active=0 uapsd_disable=1
So far everything is working