I tried to upgrade from 14.04 to 18.04 on an ASUS G73 (14.04 had been running for years). I performed the following actions:
install update-manager-core and software-properties-common if not already installed. (These were already installed)
Make sure the Prompt line in /etc/update-manager/release-upgrades is set to lts (long-term support) (This was already thus set.)
Sudo apt-get update Sudo apt-get upgrade Sudo apt-get dist-upgrade
I was instructed to reboot at this point, but was not successful. I changed the boot options in BIOS but none of the options helped. I found safe-mode instructions for a windows installation, but my computer has never had anything on it but ubuntu, and those instructions were impossible to follow.
Here is the complete sequence of observed events from power-on:
- ASUS logo
- full screen burgundy 2.5 1/4 screen burgundy (with an inscribed line) and 3/4 screen blackish
- EXEC A LOOP
-
"-" appears in upper left corner briefly, then all black screen -
"-" appears 1-3 more times, very briefly, followed by all black -
cursor arrow appears mid-screen for 1/2 sec., then all black
END LOOP
Thanks.
