Comment 10 for bug 1570901

I am only getting the ubiquity greeter on about 1 in 3 boots, the rest of the time it boots straight through to the live session.

● ubiquity.service - Ubuntu live CD installer
   Loaded: loaded (/lib/systemd/system/ubiquity.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since Mon 2016-04-18 00:51:14 UTC; 5min ago
  Process: 1430 ExecStart=/usr/share/ubiquity/start-ubiquity-dm (code=exited, status=0/SUCCESS)
 Main PID: 1430 (code=exited, status=0/SUCCESS)

Apr 18 00:51:08 ubuntu-gnome systemd[1]: Starting Ubuntu live CD installer...
Apr 18 00:51:10 ubuntu-gnome python3[1438]: pam_unix(su:session): session opened for user ubuntu-gnome by (uid=0)
Apr 18 00:51:14 ubuntu-gnome start-ubiquity-dm[1430]: Gtk-Message: Failed to load module "overlay-scrollbar"
Apr 18 00:51:14 ubuntu-gnome start-ubiquity-dm[1430]: Failed to connect to Mir: Failed to connect to server socket: No such file or directory
Apr 18 00:51:14 ubuntu-gnome start-ubiquity-dm[1430]: Unable to init server: Could not connect: Connection refused
Apr 18 00:51:14 ubuntu-gnome start-ubiquity-dm[1430]: (zenity:1820): Gtk-WARNING **: cannot open display: :0
Apr 18 00:51:14 ubuntu-gnome systemd[1]: Started Ubuntu live CD installer.

Xorg.0.log has this

[ 21.630] (WW) xf86OpenConsole: VT_ACTIVATE failed: Input/output error
[ 21.630] (EE)
Fatal server error:
[ 21.630] (EE) xf86OpenConsole: Switching VT failed
[ 21.630] (EE)
[ 21.630] (EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
[ 21.630] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[ 21.630] (EE)
[ 21.630] (WW) xf86CloseConsole: KDSETMODE failed: Input/output error
[ 21.630] (WW) xf86CloseConsole: VT_GETMODE failed: Input/output error
[ 21.630] (WW) xf86CloseConsole: VT_ACTIVATE failed: Input/output error
[ 21.630] (EE) Server terminated with error (1). Closing log file.