Ubuntu
alsa-driver package

  1. Bug #1958019
  2. Comment #794

Comment 794 for bug 1958019

Revision history for this message
In , thomas.gfeller+kernel (thomas.gfeller+kernel-linux-kernel-bugs) wrote :

Created attachment 304764
Amps are working on Yoga Pro 9i 2023

I got my amps working. If your device has a TIAS2781 component inside (http://alsa-project.org/db/?f=45447739750ff897cdc20fd0e98d4f2055beebdf <- note line 71), you can try the following:

Install i2ctools first and then run ./2pa-byps.sh with the i2c-bus number where your TIAS2781 is connected. E.g:

sudo ./2pa-byps.sh 0

In my case this enabled my subwoofers and the sound was working properly.

This change will be included in the kernel in the next couple of weeks / months so no workaround will be necessary anymore.