Linux version 4.18.16-arch1-1-ARCH
Audacity 2.3.0, installed via Arch Linux repository (pacman)
In case Audacity is the only running audio application: audio-playback on Audacity works fine, after I have to selected the appropriate output destination (HDA ATI SB: ALC 662 rev1 Analog (hw:2.0). BUT: in the very moment, when I am opening a second audio-application such as VLC or start on Chromium a youtube video, the playback on Audicity is not working anymore. Also: the correct output-destination is not listed anymore.
So far, I have to close all applications and restart Audacity to see the correct output-destination again.
I started to read a bit about alsa and pulseaudio … but I cannot find any solution.
Audacity 2.3.0 is not an official release for Linux, and is known to have some pretty bad bugs. In particular, running effects that have “real-time preview” will cause Audacity to crash.
The current release for Linux is 2.2.2.
The next release will be 2.3.1 and is scheduled for Jamuary.
Most (virtually all) modern sound cards have no hardware mixing capability, so accessing directly via ALSA almost always restricts recording or playback to one application at a time. This limitation is overcome in Linux by using an additional software layer to handle multiple audio streams, resampling and mixing. On modern Linux systems this is typically done with PulseAudio, though other options including Dmix and Jack Audio System are also available.
Normally you can just select “default” or “Pulse” as the input and output devices in the device toolbar, and everything will work as expected.
Steve, thanks for your kind reply. The drop-down menu for the audio-devices in the the device toolbar contains only one entry “Alsa”. I am wondering why PulseAudio is not listed as well. Especially since, I believe to have PulseAudio installed:
Sorry, I missed that.
There are currently three similar topics on this forum, and all are on Arch Linux, so it is looking very likely that this issue is specific to Arch Linux.
As I don’t have an Arch Linux system, I’m resorting to searching the Internet to try and find what’s different from Debian / Ubuntu systems (that don’t have this problem). Perhaps it would be worth you asking on the Arch Linux forums (I’m running out of ideas).