Sometimes when I resume from suspend, videos do not play and audio does not work because org_kde_powerde is using my sound device(s). I discovered this by running 'fuser -v /dev/snd/*'. After I kill org_kde_powerde, videos play and sound works but power management icon in system tray is gone.
Created attachment 110906 [details] fuser output when sound does not work
temporary workaround: kill org_kde_powerde and restart by running /usr/lib/org_kde_powerdevil