There's a good possibility that your problem is the same as many other people
have seen with displaying GIMP 2.8.n edited .jpgs - the JPEG progressive mode:
When exporting a JPEG, click to show "Advanced Options" and un-check
> Date: Mon, 1 Sep 2014 05:49:54 +0200
> From: for...@gimpusers.com
> To: firstname.lastname@example.org
> CC: notificati...@gimpusers.com
> Subject: [Gimp-user] edited files wont play on tv
> >* SteveMe <for...@gimpusers.com> [08-31-14 22:34]:
> >What is the extra information?
> >Not w/o more information. A stab in the dark, try removing the
> >from your jpgs.
> >ps: you might google your tv's to see what manner of jpg they accept.
> >My Vizio's accept jpg's from gimp w/o alteration as does both of my
> >samsung android phones and an ipad and a kindle tablet. ???
> I am not sure exactly what exactly this "additional information" is. I got
> from the last comment at
> I am not sure how true this is.
> I tried removing the metadata but this seems to have no effect.
> SteveMe (via www.gimpusers.com/forums)
> gimp-user-list mailing list
> List address: email@example.com
> List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
> List archives: https://mail.gnome.org/archives/gimp-user-list
gimp-user-list mailing list
List address: firstname.lastname@example.org
List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list
List archives: https://mail.gnome.org/archives/gimp-user-list