This question already has an answer here:
When I try to login to my ubuntu 12.04 it accepts my account info and password but then a black terminal page appears and disappears very fast and it goes back to login page.
I killed lightdm and then used this command:
then tried to login (while terminal keeps the log). this is the error I receive:
Warning **error reading existing Xauthority: Error opening file : Permission denied Error writing X authority:Error opening file ,/home/sam/.Xauthority': Permission denied
All of this started when I pressed M in answer to this question during boot.
The Disk Drive for
/tmp is not ready yet. S to skip mount or M for manual recovery
Here is the result to
sudo df /etc/fstab
Here the result for
sudo cat /etc/fstab
ask for more info if needed