Hi Frank McCormick, Thanks for the report!
> Package: gthumb > Version: 3:3.3.1-2+b2 > Severity: important > > Dear Maintainer, > > Running gthumb from the command line with -s for a slideshow does > nothing except spew a variety op GTK errors. > > A slideshow is available when running full screen > > I am able to use '-s' option with Gthumb 3:3.4.4.1-3 (testing - Stretch). Can you test version 3:3.4.3-2~bpo8+1, from backports ? Regards, Herbert
