Once I had modified the source kernel to solve the problem, I realised that the main issue with my laptop was the input audio of the microphone. The input channel should be set to mono rather than stereo. If the channel were set to stereo, the microphone would only use one channel. This causes the recorded audio to only come out from one side, even though the balance in pavucontrol looks "middle." You can see audacity-screenshoot.png.
To solve this, I use EasyEffect to change the input microphone from stereo to mono. You can see from this: https://askubuntu.com/questions/1439652/how-can-i-downmix-stereo-audio- output-to-mono-in-pipewire-on-22-10 For anyone who has a problem with the microphone not detected, you may need to modify the source kernel. You can follow these tutorials: 1. Based on : https://jiangsc.me/2023/06/03/thinkpad-neo-14-issue-fix/ Add your Manufacturer and Product Name in sound/soc/amd/yc/acp6x-mach.c You can get it from sudo dmidecode -t baseboard 2. To Modify the source kernel, you can follow this: https://davidaugustat.com/linux/how-to-compile-linux-kernel-on-ubuntu That's probably all I can report. Hopefully, the next kernel update will solve this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1904213 Title: Built-in microphone not working with 20.04 on ThinkBook 13s IML [Realtek ALC257] To manage notifications about this bug go to: https://bugs.launchpad.net/sound-2.6/+bug/1904213/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
