I have installed the very latest OBS 26.1.1 on my Ubuntu 20.10 system (64-bit) via the official PPA.
However, no matter what I do, I cannot get the Deskop Audio channel to work, even though everything else works perfectly. No sound at all can be captured in the Desktop Audio. On Windows 10, everything works fine and I can get it to work no problem.
There is nothing wrong with my hardware, and every other audio application works perfectly. It is only the Desktop Audio in OBS where nothing comes through.
Can someone help me?
I would greatly appreciate any help.
21 Answer
I found the issue. The monitor on my soundcard was muted in Pulseaudio Volume Control, also known as pavucontrol
Simply install Pulseaudio Volume Control from the Software app, or use sudo apt install pavucontrol
Then run it, go to the Input Devices tab, and then check if the monitor of your sound card is unmuted.
I don't know why it was unmuted, but after trying about a hundred things, I tried checking my pulseaudio settings and this fixed it.