Ubuntu
alsa-driver package

  1. Bug #1299857
  2. Comment #19

Comment 19 for bug 1299857

Revision history for this message
Raymond (superquad-vortex2) wrote :

https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/ac97/ac97_patch.c?id=da79e44df4fff22c7f815687ea210b2324b3507c

you need modification of patch_alc850 and alc850_update_jacks

to disable 2ch and 4ch of channel mode