Thanks Luke, I appreciate your patience. I now retested with 8 speakers connected and tested both alsa and pulseaudio behaviour since its inconsistent.
Alsa issues (test with speaker-test -Dplug:surround71 -c8 -twav): green (Headphone/Front) jack: works properly and plays Front Left and Front Right grey (Line Out/Surround) jack: plays Front Left and Front Right duplicating the green jack instead of Side Left and Side Right. blue (Rear) jack: nothing. It should play Rear Right and Rear Left. pink (Mic In/Center/Subwoofer) jack: nothing. It should play the Center and LFE. pulseaudio issues (test with speaker-test -Dpulse -c8 -twav): speaker-test -Dpulse -c8 -l1 -twav green (Headphone/Front) jack & grey (Line Out/Surround) jack: Both plays 0 - Front Left, 4 - Center 1 - Front Right 7 - Side Right 3 - Rear Right 2 - Rear Left 6 - Side Left blue (Rear) jack: nothing. It should play Rear Right and Rear Left. I also tested pulseaudio with option default-sample-channels = 8 instead of the default 2 but it doesn't make a difference. Beside those bugs there is no alsamixer sliders to control the surround channel levels separately. If this info is enough please change the Incomplete status of the bug. -- Realtek ALC888 recognized as having 2 channels instead of 8 https://bugs.launchpad.net/bugs/642230 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
