Re: [Alsa-user] 8-channel HDMI outputs show up as 2 channels only on recent Intel laptop
Digging a little further, it sure looks like somehow ALSA is not picking up the HDMI nature of my sound card. The only option I have for sound in pulse audio volume control is Play HiFi quality Music and this has to come from ALSA. There are several files in /usr/share/alsa/ucm2/Intel/sof-hda-dsp/ that appear relevant but I don't know how to interpret or debug them. Is there documentation on how to debug ALSA ucm2 problems? peter On 7/13/22 19:10, Peter F. Patel-Schneider wrote: alsa-info.sh upload at http://alsa-project.org/db/?f=c20d56cb6e1d63e06ebae27b806abfdb66874718 On Thu, 2022-07-14 at 00:53 +0200, Paul Menzel wrote: Dear Peter, Am 14.07.22 um 00:12 schrieb Peter F. Patel-Schneider: I have an Ice Lake laptop with 3 8-channel HDMI outputs. My kernel appears to have the appropriate modules loaded for the card, including snd_hda_codec_hdmi. Here is the information for one of the channels from /proc/asound/card0/codec#2. […] But as far as I can tell ALSA is turning them into 2-channel outputs. At least I can not see any surround channels in alsamixer and I can only play 2-channel sound to them using speaker-test. How can I find out where the change from 8 channels to 2 channels is happening? And how can I get 7.1-channel (or 5.1-channel) sound to these outputs? Please use `alsa_info.sh` [1] to upload more information. Kind regards, Paul [1]: https://www.alsa-project.org/alsa-info.sh ___ Alsa-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] 8-channel HDMI outputs show up as 2 channels only on recent Intel laptop
Dear Peter, Am 14.07.22 um 00:12 schrieb Peter F. Patel-Schneider: I have an Ice Lake laptop with 3 8-channel HDMI outputs. My kernel appears to have the appropriate modules loaded for the card, including snd_hda_codec_hdmi. Here is the information for one of the channels from /proc/asound/card0/codec#2. […] But as far as I can tell ALSA is turning them into 2-channel outputs. At least I can not see any surround channels in alsamixer and I can only play 2-channel sound to them using speaker-test. How can I find out where the change from 8 channels to 2 channels is happening? And how can I get 7.1-channel (or 5.1-channel) sound to these outputs? Please use `alsa_info.sh` [1] to upload more information. Kind regards, Paul [1]: https://www.alsa-project.org/alsa-info.sh ___ Alsa-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] 8-channel HDMI outputs show up as 2 channels only on recent Intel laptop
alsa-info.sh upload at http://alsa-project.org/db/?f=c20d56cb6e1d63e06ebae27b806abfdb66874718 On Thu, 2022-07-14 at 00:53 +0200, Paul Menzel wrote: > Dear Peter, > > > Am 14.07.22 um 00:12 schrieb Peter F. Patel-Schneider: > > I have an Ice Lake laptop with 3 8-channel HDMI outputs. My kernel > > appears to have the appropriate modules loaded for the card, > > including > > snd_hda_codec_hdmi. Here is the information for one of the > > channels > > from /proc/asound/card0/codec#2. > > […] > > > But as far as I can tell ALSA is turning them into 2-channel > > outputs. > > At least I can not see any surround channels in alsamixer and I can > > only play 2-channel sound to them using speaker-test. > > > > How can I find out where the change from 8 channels to 2 channels > > is > > happening? And how can I get 7.1-channel (or 5.1-channel) sound to > > these outputs? > > Please use `alsa_info.sh` [1] to upload more information. > > > Kind regards, > > Paul > > > [1]: https://www.alsa-project.org/alsa-info.sh ___ Alsa-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/alsa-user
