it is pulseaudio patch which change those pulseaudio conf files in /use/share/pulseaudio/alsa-mixer/paths
you already the alsa patch when you have Simple mixer control 'Speaker+LO',0 Capabilities: pvolume Playback channels: Front Left - Front Right Limits: Playback 0 - 87 Mono: Front Left: Playback 87 [100%] [0.00dB] Front Right: Playback 87 [100%] [0.00dB] https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda/hda_generic.c?id=03ad6a8c93b6df2d65c305b5b5f9474068b45bfb ** Changed in: alsa-driver (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1404731 Title: [ Dell OptiPlex 7020, Realtek ALC3220, Green Line Out, Rear] Background noise To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1404731/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
