A couple things that bug me about this dist.
Using default with this iso uses xfce and lightdm.
1. nm-tray icon (network-manager) everytime you login it adds a new icon in the tray. I ended up with 9 of them at one point.
Fix: uninstall nm-tray with sudo apt-get remove nm-tray. logout/login reinstall with sudo apt-get install nm-tray.
logout and log back in and you should have one. Then go into MENU: settings/session and startup then select Apllication Autostart tab and remove nm-tray check in checkbox. close, logoout/login and it won't keep adding it.
2. Screen Blanking: by default it blanks screen every 600 seconds xset says.
type xset q in a terminal and you should see DPMS is Enabled
to turn this off type in terminal: cd ~ then sudo pico ./bashrc
edit at the bottom of the file and put these lines in.
export DISPLAY=;0.0
xset s off
xset s noblank
xset -dpms
then ctrl X then Y then enter
3. Synaptics won't add repository for master:
Remove the existing linuxcnc repositories, sudo apt-get update and upgrade, mark all linuxcnc for removal and apply.
For me, however I try it wont add the master buildbot repositories.
Edit /etc/apt/sources.list and add them at the end of the file save and close then sudo apt-get update and sudo apt-get upgrade and you are good to go.
Maybe this will save someone some time......