The following got me back in...
1. At Grub2 Loader, Select Ubuntu (Recovery Mode). ...machine will begin the boot process.
2. From the Options presented select: Root "Drop to root shell prompt"
3. you must first mount the file system as read/write with the following commands:
# mount --options remount,rw / # mount --all
4. enter the following at the command prompt: # sudo dpkg -i /var/cache/apt/archives/gdm_3.5.92.*.deb
The following got me back in...
1. At Grub2 Loader, Select Ubuntu (Recovery Mode).
...machine will begin the boot process.
2. From the Options presented select:
Root "Drop to root shell prompt"
3. you must first mount the file system as read/write with the following commands:
# mount --options remount,rw /
# mount --all
4. enter the following at the command prompt: apt/archives/ gdm_3.5. 92.*.deb
# sudo dpkg -i /var/cache/