Setting Audio output to Jack instead of HDMI

Question

Hello,

I am using the Debian Linux from agrahambell on my RIoT Board. Thanks for linux build.

I have loaded alsa package = alsa-base alsa-utils alsaplayer and other required pacakages.

In the alsamixer I have the audio output set to 'DAC'. Not sure what this means.

I need to play audio via the audio jack on an external speaker from the command line. So for that I have alsaplayer for this.

However when I try to play the audio file via aplay there is not sound via the audio jack.

Also I don't have HDMI TV to be able to check if the audio is coming from the HDMI or not.

My HDMI converter is connected to a Monitor via DVI-D conversion.

Kindly help me out with this problem.

Warm Regards,

Abhijit

Former Member · Answer

Someone else mentioned audio problems yesterday toward the end of the ask-the-expert thread, so I'm investigating at the moment. line out did work at one point as I'd tested it at the time, but something has changed somewhere between then and now, so I'll have to backtrack to see if I can find it. HDMI audio isn't going to work at this point either I'm afraid. While some patches for this do exist, they're still in a state of flux and it's not clear what version if any will make the cut. As I've said before, mainline kernel isn't for everyone - things will be missing or get broken along the way. It is important to work towards getting mainline functional though as it benefits everyone in the long term. So your testing and letting us know of any problems is appreciated !

bose · Answer

Hi, Thanks for your insight. I will try to flash to stock Ubuntu and check it once. The problem with the stock ubuntu is that its resolution requires me to connect the serial debug and change the boot parameters. If any one can help me with these U-boot parameters it would be really a big relief. As I still far behind my project in terms of making a Audio Video to work from this board. Thanks in advance. Warm Regards, Abhijit