[ubuntu_mate] Audio from 3.5mm jack after 2nd HDMI connected
When all is as described above I cannot get audio from the 3.5mm jack. I can get audio from each HDMI device without issue as both have internal speakers.
After trying different configurations, I have found that I get audio from the 3.5mm jack when HDMI-2 (projector) is disconnected and pi rebooted, so that only HDMI-1 is connected.
I have tried
sudo amixer cset numid=3 1
without success as I get this returned:
amixer: Cannot find the given element from control default
I was having these issues and some others relating to my display when using, Raspian (even tried forcing audio through 3.5mm using the raspi-config utility) so I switched from Raspian to Ubuntu-mate. I had the same audio issue in both operating systems. I am currently running Ubuntu Mate.
i have also tried –
sudo apt-get install –reinstall alsa-base pulseaudio
sudo alsa force-reload
I have tried testing speakers using ubuntu-mate’s graphical sound settings, hardware tab – does not work.
I used alsamixer to ensure that the headphones volume was turned up to full and not muted.
I have tried Google and I have not found a solution.
I am new to Linux.
Thanks for your help.
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