@Raymond in #24: "are you using latest alsa driver since you cannot playback 4 or 6 channles ?"
First of all, no, I'm using the stock 3.5.x series kernel that comes with Ubuntu 12.04.2 There are some instructions over here, from 2010, involving synaptic and Crackle-of-the-Day alsa drivers. https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules Should I try installing, using these instructions? Are there more recently-updated instructions? Second of all, in *some* tests I can play back more than 2 channels, but in others I cannot; it depends on the args passed to speaker-test as to whether I hear more than two channels (and on whether pulseaudio is running/patched). Note that I am only and always doing tests with the 5.1 built-in onboard internal speakers at the moment. I have not tried doing any tests, at any point, with 7.1 external-speakers-connected-via-3.5mm-jacks. @Raymond in #24: "using hda-emu , max channels is already 6" "but channel still 0 for audio output 0x3 and 0x4" "headphone , line out and all speakers get the front only" So, you are running some tests on your end with https://github.com/tiwai/hda-emu ? And passing in the alsa-info.txt that I generated. Since applying the dotconf patches, I'm not sure the output will be the same anymore. Just in case, I'll run it again, see attached. Do you want me to try running hda-emu on this end? ** Attachment added: "alsaInfoWithWorkaround32plusPatch13.txt" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1236965/+attachment/3872766/+files/alsaInfoWithWorkaround32plusPatch13.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1236965 Title: pulseaudio does not recognize internal speakers [P180HMx, Realtek ALC892, Speaker, Internal] volume slider problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1236965/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs