I have installed Ubuntu 18.04 on my Dell XPS 15 laptop. I was working fine until yesterday. After a system update, I cannot log in to Ubuntu using normal mode. This is the error I am getting:
Gave up waiting for root file system device. Common problems:
-Boot args (cat /proc/cmdline) - Check rootdelay=(did the system wait long enough?) -Missing modules (cat /proc/modules; ls /dev) ALERT! UUID=22f93100-9860-44b7-8086-51b4404d499d does not exist. Dropping to a shell
BusyBox v1.27 2 (Ubuntu 1:1.27.2-2ubuntu3) built in shell (ash) Enter 'help' for a list of built-in commands.
Ubuntu is opening in recovery mode. But there I cannot change the display brightness. In fact,when I did this to check the driver: ls /system/class/backlight
I found none.
Is there any way I can recover Ubuntu without reinstalling? I have many software's installed and I don't want to loose them now.
Thank you, Arka