"Select Audio Device" dialog offers to open Sound Settings in GDM user selection screen.
GNOME 3.30 on Fedora Workstation 29.
Steps to reproduce
- Boot up a cheap laptop with a single sound jack without impedance sensing.
- While in the GDM user selection screen, plug headphones in.
Actual results
"Select Audio Device" dialog pops up, with an button to open Sound Settings. This button works, but it fails to open the Setting app (obviously, you can't open the Settings app in the GDM user selection screen!)
Expected results
"Select Audio Device" dialog pops up but the Sound Settings button is disabled / absent.