Ubuntu
alsa-driver package

  1. Bug #1302090
  2. Comment #6

Comment 6 for bug 1302090

Revision history for this message
Raymond (superquad-vortex2) wrote : Re: Speaker sound output is mono until a headphone jack is plugged

Your driver seem quite old since alc668 has been renamed as alc3661

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda/patch_realtek.c?id=4b016931a997be59a2be0da3398985a19fdfa5be

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda/patch_realtek.c?id=493a52a9b6645f61954580c7d4bd52fa62110934