How to configure 5.1 channel output when only two channels are autodetected?
I have somewhat unusual audio/video output setup and I can't configure it right. The problematic part is one of HDMI outputs, which drives a monitor with 2.0 sound and an AV receiver with support 5.1 channels (which drives a projector) through an HDMI splitter. The splitter most likely changes EDID to provide list of features common to both monitor and receiver, so alsa(?) detects only 2.0 speaker configuration and I cannot set 5.1 output. Is there a way how to override the detected information?
the setup looks like this:
HDMI-0 --- splitter --- 2.0 monitor
hw:0,3 ---- 5.1 AV receiver ---- projector
==== (speakers)
I have already tried:
- change default-sample-channels in /etc/pulse/daemon.conf
- load module-alsa-sink with 6 channels on the correct HDMI output
- to change channel map in /usr/share/pulseaudio/alsa-mixer/profile-sets/default.conf
- to play via alsa without pulseaudio (through both hw: and plughw:)
all with no success (i.e. I can get only 2.0 or no audio at all). Since pulseaudio doesn't detect nor allow me to create the 5.1 output, I believe the problem lies in lower levels. (alsa, deeper?) I have no idea where to start looking.
The only way I managed to get it work was to connect the receiver directly, boot the system to detect capabilities, then to disconnect it and reconnect via the splitter together with the monitor, and then it works as expected, so the problem is clearly the software configuration.
sound hdmi
asked Mar 1 at 21:57
user930047user930047
11
add a comment |
I have somewhat unusual audio/video output setup and I can't configure it right. The problematic part is one of HDMI outputs, which drives a monitor with 2.0 sound and an AV receiver with support 5.1 channels (which drives a projector) through an HDMI splitter. The splitter most likely changes EDID to provide list of features common to both monitor and receiver, so alsa(?) detects only 2.0 speaker configuration and I cannot set 5.1 output. Is there a way how to override the detected information?
the setup looks like this:
HDMI-0 --- splitter --- 2.0 monitor
hw:0,3 ---- 5.1 AV receiver ---- projector
==== (speakers)
I have already tried:
- change default-sample-channels in /etc/pulse/daemon.conf
- load module-alsa-sink with 6 channels on the correct HDMI output
- to change channel map in /usr/share/pulseaudio/alsa-mixer/profile-sets/default.conf
- to play via alsa without pulseaudio (through both hw: and plughw:)
all with no success (i.e. I can get only 2.0 or no audio at all). Since pulseaudio doesn't detect nor allow me to create the 5.1 output, I believe the problem lies in lower levels. (alsa, deeper?) I have no idea where to start looking.
The only way I managed to get it work was to connect the receiver directly, boot the system to detect capabilities, then to disconnect it and reconnect via the splitter together with the monitor, and then it works as expected, so the problem is clearly the software configuration.
sound hdmi
asked Mar 1 at 21:57
user930047user930047
11
add a comment |
I have somewhat unusual audio/video output setup and I can't configure it right. The problematic part is one of HDMI outputs, which drives a monitor with 2.0 sound and an AV receiver with support 5.1 channels (which drives a projector) through an HDMI splitter. The splitter most likely changes EDID to provide list of features common to both monitor and receiver, so alsa(?) detects only 2.0 speaker configuration and I cannot set 5.1 output. Is there a way how to override the detected information?
the setup looks like this:
HDMI-0 --- splitter --- 2.0 monitor
hw:0,3 ---- 5.1 AV receiver ---- projector
==== (speakers)
I have already tried:
- change default-sample-channels in /etc/pulse/daemon.conf
- load module-alsa-sink with 6 channels on the correct HDMI output
- to change channel map in /usr/share/pulseaudio/alsa-mixer/profile-sets/default.conf
- to play via alsa without pulseaudio (through both hw: and plughw:)
all with no success (i.e. I can get only 2.0 or no audio at all). Since pulseaudio doesn't detect nor allow me to create the 5.1 output, I believe the problem lies in lower levels. (alsa, deeper?) I have no idea where to start looking.
The only way I managed to get it work was to connect the receiver directly, boot the system to detect capabilities, then to disconnect it and reconnect via the splitter together with the monitor, and then it works as expected, so the problem is clearly the software configuration.
sound hdmi
asked Mar 1 at 21:57
user930047user930047
11
I have somewhat unusual audio/video output setup and I can't configure it right. The problematic part is one of HDMI outputs, which drives a monitor with 2.0 sound and an AV receiver with support 5.1 channels (which drives a projector) through an HDMI splitter. The splitter most likely changes EDID to provide list of features common to both monitor and receiver, so alsa(?) detects only 2.0 speaker configuration and I cannot set 5.1 output. Is there a way how to override the detected information?
the setup looks like this:
HDMI-0 --- splitter --- 2.0 monitor
hw:0,3 ---- 5.1 AV receiver ---- projector
==== (speakers)
I have already tried:
- change default-sample-channels in /etc/pulse/daemon.conf
- load module-alsa-sink with 6 channels on the correct HDMI output
- to change channel map in /usr/share/pulseaudio/alsa-mixer/profile-sets/default.conf
- to play via alsa without pulseaudio (through both hw: and plughw:)
all with no success (i.e. I can get only 2.0 or no audio at all). Since pulseaudio doesn't detect nor allow me to create the 5.1 output, I believe the problem lies in lower levels. (alsa, deeper?) I have no idea where to start looking.
The only way I managed to get it work was to connect the receiver directly, boot the system to detect capabilities, then to disconnect it and reconnect via the splitter together with the monitor, and then it works as expected, so the problem is clearly the software configuration.
sound hdmi
sound hdmi
asked Mar 1 at 21:57
user930047user930047
11
asked Mar 1 at 21:57
user930047user930047
11
asked Mar 1 at 21:57
user930047user930047
11
asked Mar 1 at 21:57
user930047user930047
11
asked Mar 1 at 21:57
user930047user930047
11
11
add a comment |
add a comment |
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