Monday, November 01, 2021

Windows 11 installation affects wifi of linux installed as dual boot

I've upgraded my dell precision laptop to windows 11. However, when I use the Ubuntu linux installed on the same laptop, the wifi is missing. Having searched on the internet, it seems that the windows 11 enables fast startup for windows, which causes the following error for linux:

iwlwifi: probe of 0000:03:00.0 failed with error -110

Following the instruction on this link: https://askubuntu.com/questions/1083369/ubuntu-18-04-cannot-recognize-intel-wireless-ac-9260/1183101#1183101?s=0c0b330e14054b6fb889dec613f7f56e, I managed to turn off the fast startup for windows. Now the linux wifi works again!




Saturday, December 19, 2020

 My working laptop is Precision-7520 which has the audio device "Intel Corporation CM238 HD Audio Controller" as in the "lspci" output. Searched on internet for a while and finally found a working solution.

sudo vi /etc/modprobe.d/alsa-base.conf

Add the following two lines at the end:

options snd-hda-intel probe_mask=1

It fixes the error shown in the output of "dmesg"

no response from codec
Unable to sync register 0x2f0d00. -5