you may need to open an upstream bug report at
https://bugzilla.kernel.org/enter_bug.cgi?product=Drivers it is pulseaudio module-switch-on-port-available which change the input source when the jacks are not plugged for the workaround, you may try disable Jack detection by hint using early patching https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/Documentation/sound/alsa /HD-Audio.txt The generic parser supports the following hints: - jack_detect (bool): specify whether the jack detection is available at all on this machine; default true -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1365769 Title: [G41MT-S2P, VIA VT2020, Pink Mic, Rear] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1365769/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs