HDMI sound via ATI graphics card: Difference between revisions

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[[Category:201307]]
[[Category:201307]]


The HDMI sound device might not be detected automatically when booting the computer without the television connected. I hope this instruction will help you to make sure the drivers are always loaded.
This concerns the AMD proprietary driver (fglrx)


The easiest way:
== ATI graphics HDMI sound disabled when the television turned off ==
 
The ATI graphics card HDMI sound device is disabled when the television is turned off. Bug report:
* https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/1001842
 
Workaround 1:


# Turn TV on
# Turn TV on
# Reboot
# Reboot
# Keep it on


Open ''sound settings'':
Workaround 2:
 
# Go to terminal CTRL+ALT+F1
# Back to Unity CTRL+ALT+F7 / 8
 
Workaround 3:
 
<syntaxhighlight lang=bash>
xrandr -display :0 --output DFP2 --off
xrandr -display :0 --output DFP2 --auto
</syntaxhighlight>
 
Open ''sound settings'', you should see an HDMI Audio device here:


<blockquote>
<blockquote>
[[File:SoundSettings.png|600px|link=]]
[[File:SoundSettings.png|600px|link=]]
</blockquote>
</blockquote>
== Testing HDMI audio device ==


First find your HDMI sound device, in this case '''card 1''', '''device 3''':
First find your HDMI sound device, in this case '''card 1''', '''device 3''':
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</blockquote>
</blockquote>


Modify the following file to force-load the driver:
The following file loads the devices:
 
<syntaxhighlight lang=bash>
sudo gedit /etc/pulse/default.pa
</syntaxhighlight>
 
Insert a line after ''module-alsa-sink'', use option 1,3 for card 1 and device 3:


<blockquote>
<blockquote>
<syntaxhighlight lang=bash>
/etc/pulse/default.pa
...
#load-module module-alsa-sink
#20130701,wjv force load HDMI sound driver card 1, device 3:
load-module module-alsa-sink device=hw:1,3
...
</syntaxhighlight>
</blockquote>
</blockquote>
Reboot your system.


Test with ''aplay'' or with ''speaker-test'' (card 1, device 3):
Test with ''aplay'' or with ''speaker-test'' (card 1, device 3):

Latest revision as of 15:57, 15 July 2013


This concerns the AMD proprietary driver (fglrx)

ATI graphics HDMI sound disabled when the television turned off

The ATI graphics card HDMI sound device is disabled when the television is turned off. Bug report:

Workaround 1:

  1. Turn TV on
  2. Reboot
  3. Keep it on

Workaround 2:

  1. Go to terminal CTRL+ALT+F1
  2. Back to Unity CTRL+ALT+F7 / 8

Workaround 3: 

xrandr -display :0 --output DFP2 --off
xrandr -display :0 --output DFP2 --auto

Open sound settings, you should see an HDMI Audio device here:

Testing HDMI audio device

First find your HDMI sound device, in this case card 1, device 3: 

aplay -l
**** List of PLAYBACK Hardware Devices ****
...
card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

The following file loads the devices:

/etc/pulse/default.pa

Test with aplay or with speaker-test (card 1, device 3): 

aplay -D plughw:1,3 ~/Scripts/other/alarm.wav
speaker-test -c 2 -r 48000 -D hw:1,3

Make sure the card is not muted: 

sudo apt-get install gnome-alsamixer
alsamixer
  • F6 to select the device
  • M to mute/unmute
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