[mattlach]

If you upgrade, you need to remove consolekit, pm-utils, upower

A little bit of a warning here.

Removing upower resulted in the following:

Code:

$ sudo apt-get remove upower
[sudo] password for htpc:
Reading package lists... Done
Building dependency tree      
Reading state information... Done
The following extra packages will be installed:
  gnome-control-center gnome-control-center-data gnome-icon-theme gnome-icon-theme-symbolic gnome-settings-daemon libcolord-gtk1 libgoa-backend-1.0-1
The following packages will be REMOVED:
  gnome-power-manager gnome-session-bin indicator-power nautilus-share powerd ubuntu-session unity-control-center upower
The following NEW packages will be installed:
  gnome-control-center gnome-control-center-data gnome-icon-theme gnome-icon-theme-symbolic gnome-settings-daemon libcolord-gtk1 libgoa-backend-1.0-1
0 upgraded, 7 newly installed, 8 to remove and 0 not upgraded.
Need to get 3,633 kB of archives.
After this operation, 10.6 MB of additional disk space will be used.
Do you want to continue? [Y/n]

which in its turn makes it impossible to start a Unity session on my 15.04 install.

For those of you who want to run Kodi on top of a full session, rather than as a session, this may be of importance.

There does not appear to be a straight forward way to make Unity work again after this either. Luckily I made a dd image of the install before reverting to 14.04 earlier today, so I could easily restore it.