upgrade to devel/dbus breaks xfce4

[Raphael Kubo da Costa]

Aryeh Friedman <aryeh.friedman at gmail.com> writes:

> After upgrading deval/dbus to dbus-1.10.12 xfce4 fails to start as a
> non-root user due to being unable to open/write to /etc/machine-id. I
> made a tempurary fix by touching /etc/machine-id and chmod'ing it to
> 777.

If the /etc/machine-id message you're getting looks like

    D-Bus library appears to be incorrectly set up; failed to read
    machine uuid: Failed to open "/etc/machine-id": No such file or
    directory

it may be misleading as /etc/machine-id is a fallback if other files
were not found before (see bug 213540, for example).

Is dbus running when you try to launch XFCE?