View Full Version : [mythbuntu] Xonar Soundcard - no HDMI-sound

January 6th, 2013, 04:21 PM
I'm running a fresh installation of the newest mythbuntu and have trouble with my asus xonar-soundcard.

The alsa-driver is working well - but without hdmi-output. I'm using Asus Xonar HDAV 1.3 slim. It has only two outputs: SPDIF and HDMI. Because My PC comes with a front-panel, I could plugin some headphones to check for sound. It is indeed playing but only in poor stereo. The card was pretty expensive and usually supports 7.1-dts. Headphone-usage is not intended.

I need sound over HDMI because I'm using the soundcard in an HTPC.

January 6th, 2013, 09:51 PM
Run Sound Settings and check Hardware, then Output device and connector.

January 8th, 2013, 02:46 AM
No, no it's a driver problem. The hdmi-output is not supported by the driver. I found an old threat (http://ubuntuforums.org/showthread.php?t=1717265) with recommendation to install a new kernel:

The guy who who wrote the driver for this card had this to say in 2009: (http://www.spinics.net/linux/fedora/alsa-user/msg07956.html)
The driver supports all hardware features, except HDMI,
However, in January of this year he updated the ALSA database page for ASUS (http://www.alsa-project.org/main/index.php/Matrix:Vendor-Asus), and changed HDMI status (http://www.alsa-project.org/main/index.php?title=Matrix:Vendor-Asus&diff=prev&oldid=2264) from "no support" to "untested support" with the kernel 2.6.38. Not a definite answer but it gives you something to try out.

To install the newer kernel see here:
http://askubuntu.com/questions/30196...nel-with-10-10 (http://askubuntu.com/questions/30196/is-it-possible-to-use-a-2-6-38-kernel-with-10-10)
It's almost two years old and the present kernel is newer than the testing-version from this time, hence this threat.

In meantime, I'm happy I found out that SPDIF is working and it makes it possible to connect the PC to the Hifi-Receiver to get sound at all.
Just for watching recordings on the TV however, this setup is annoying. Without sound over HDMI I always have to power-on the receiver along with the TV to get sound.