[Pkg-utopia-maintainers] Bug#757698:

[Tixy]

I am also seeing this problem running LXDE on an up to date testing
install and booting using sysvinit-core and systemd-shim. It appears to
be a general authentication problem as mounting removable media also
gives permission errors and trying to run gparted fails. If I boot with
systemd (init=/bin/systemd on kernel command-line) then everything works
as expected.