No HDMI sound after suspend/resume in LEAP 42.2

I’m having an odd problem after installing LEAP 42.2; things worked OK under LEAP 42.1. It’s a clean install of LEAP 42.2, but the /home partition was taken from LEAP 42.1.

I use Fitlet connected to a TV via HDMI to run Kodi and other multimedia applications under Gnome. After a suspend/resume cycle, I get no sound. When I click on Gnome’s “wrench and screwdriver” icon to open the “All Settings” window, though, the sound starts up again. All I have to do is open the “All Settings” window, nothing else.

Any ideas of what’s going on and how I can make things work properly?