I placed a sticky note on the edge of the monitor with an arrow on it and rebooted multiple times to read the fast appearing/disappearing text, each time moving the sticky down so I knew where to focus my eyes to try and read it quick enough on next reboot.
I came to a line "X.Org desktop not found"
I changed the graphics driver from "Nvidia tested" to "X.Org X Server Nouveau", the Ubuntu splash screen on shutdown remained, but the Ubuntu boot splash had gone, I rebooted again and the Ubuntu splash on shutdown had also gone.
It has also stopped video playback, attempting this crashes the OS and opens a report dialogue to Ubuntu on auto restart before the login screen. I will ask about graphics in the relevant section.
I came to a line "X.Org desktop not found"
I changed the graphics driver from "Nvidia tested" to "X.Org X Server Nouveau", the Ubuntu splash screen on shutdown remained, but the Ubuntu boot splash had gone, I rebooted again and the Ubuntu splash on shutdown had also gone.
It has also stopped video playback, attempting this crashes the OS and opens a report dialogue to Ubuntu on auto restart before the login screen. I will ask about graphics in the relevant section.