I had not used Audacity for a couple of years but I’ve not had this issue before.
I usually control audio volume with a little widget on the taskbar. This works fine of video ( eg utube ) VLC and wav files.
Yesterday I did a bit of work with Audacity which said it needed Jack ( it seems to have started this automatically if it was not already running ).
IIRC I had to run PulseAudio Volume control which I found on the system menu ( I’ve not used this before ) to set mike input levels and select it as the source.
At that point the volume “mixer” widget stopped having any effect on audio output.
All videos are too quiet so I need to set them with PAVC. Sadly this is not persistent and every time I run a new video or audio source I need to reset the value because it bounces back to 100% ( too quiet ).
After some rather fruitless googling I discovered my Fedora system is now using pipewire instead of jack. I thought this may be the source of the problem so I tried installing jack , which automatically uninstalls pipewire.
dnf --allowerasing install alsa-plugins-jack
That did not help. Same behaviour. This suggests that it is neither jack nor pipewire so I’m back seeing this as something Audcity has done , either directly or indirectly.
I’m sure I’m not the only one with this kind of issue. It seems, after being pretty stable for a long time Linux sound is causing lots of problems.
If I reboot, things work OK until I run Audacity.
Can anyone point me to the cause and what to do to fix this?