Description of problem: I have hooked-up 4.1 speakers to the line and speaker outlets on my HDA Intel (ALC888) soundcard in order to have 4.1 surround sound. In windows this works fine. In linux: [eddie@e2800fedora ~]$ aplay -L default Default front:CARD=Intel,DEV=0 HDA Intel, ALC888 Analog Front speakers surround40:CARD=Intel,DEV=0 HDA Intel, ALC888 Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0 HDA Intel, ALC888 Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0 HDA Intel, ALC888 Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0 HDA Intel, ALC888 Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0 HDA Intel, ALC888 Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Intel,DEV=0 HDA Intel, ALC888 Digital IEC958 (S/PDIF) Digital Audio Output hdmi:CARD=HDMI,DEV=0 HDA ATI HDMI, ATI HDMI HDMI Audio Output However, Pulseaudio's volume control does not provide an option to enable the line-in connector to be configured as rear speaker output. So, as a result, i have no surround (multi-channel) output, only stereo on the front speaker connectors. Version-Release number of selected component (if applicable): pulseaudio-gdm-hooks-0.9.21-7.fc14.x86_64 pulseaudio-0.9.21-7.fc14.x86_64 alsa-plugins-pulseaudio-1.0.22-1.fc13.x86_64 pulseaudio-module-gconf-0.9.21-7.fc14.x86_64 pulseaudio-libs-0.9.21-7.fc14.x86_64 pulseaudio-module-x11-0.9.21-7.fc14.x86_64 pulseaudio-libs-glib2-0.9.21-7.fc14.x86_64 pulseaudio-module-bluetooth-0.9.21-7.fc14.x86_64 pulseaudio-utils-0.9.21-7.fc14.x86_64 How reproducible: Always Steps to Reproduce: 1. Connect surround speakers to line-in connector on HDA Intel (ALC888). 2. Try to configure 4.0 surround 3. Actual results: No option to enable multichannel (not detected) Expected results: Pulseaudio should detect this card properly and, like in windows, provide an option to enable the line-in outlet to be set for analog output to the surround speakers. Additional info:
It took me a lot of googeling but i found the solution. 1. I had to put the line: "options snd-hda-intel model=3stack-6ch-dig power_save=10" to /etc/modprobe.d/dist-alsa.conf. 2. Reboot. 3. Start alsamixer and with F6 select "0 HDA Intel" 4. Use left/right arrow keys to select "Channel" 5. Use up/down arrow keys to select "4ch". 6. Push escape key to exit alsamixer. 7. Execute "pulseaudio -k". 8. Execute gnome-volume-control and go to the tab "Hardware" and select Profile "Analog Surround 4.0 Output + Analog Stereo Input". Done.
After a reboot, I found out that the 4 channel settings as I set them in comment #1 , were restored to 2 channel settings again. So, I went googeling again and found a workaround. After doing the steps 1 to 8 as described in comment #1, do the following additional steps also: 9. log in as root 10. Do "alsactl store 0 alsamixer_config_0" 11. Edit /etc/rc.d/rc.local and add the line "/sbin/alsactl restore 0 alsamixer_config_0" 12. save the changes and reboot. done Now, why does this whole soundcard multichannel thing has to be so complicated? There should be a better, more user friendly solution.
Same issue exists in F15.
This is getting frustrating; in order to keep the settings as i described them in comment #1 and comment #2, i have to redo them over and over again because they disappear after a while. I guess some package updates are responsible for "undoing" my changes. Anyway, this has to be solved so that my multi-channel adaptations are being kept permanently. Regards, Eddie.
I have a similar issue with Intel HDA (ALC1200). After updating Fedora I got only sound from the center and front-left speakers. The configuration dialog of pulseaudio showed me options from stereo up to 7.1 surround but only two channels actually work (tested with speaker-test). Doing the steps 1 to 12 from comment #1 and comment #2 solves the problem. Kind Regards, Pascal
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The bug report you linked to is about a problem with PulseAudio not detecting multichannel output on HDA Intel (ALC888) soundcards. The bug was reported in 2012 and has not been fixed yet. There are a few workarounds that you can try if you are experiencing this problem. One workaround is to use the command line to configure PulseAudio. You can do this by running the following command: https://quickbookintegration.com/square-quickbooks-integration Code snippet pacmd set-default-sink <name of surround sound output>