1 and 2 are covered in bug 33753 and in gnome bug 359592 and requires some upstream and freedesktop.org effort to get it right as you can see in the gnome bug. 3 wouldnt occur if 1 and 2 were fixed ...
-- Lock Screen blanks screen instead of showing screensaver (on external monitor) https://launchpad.net/bugs/71030 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
