Yesterday I had my second host, which did not upgrade seamlessly to Ubuntu Oneiric. After some googling, I’ve found the problem, which lasts in an unproper script to migrate to /run.
Problem: After the upgrade and restart, the system hangs while booting at a spash screen saying “trying to configure network” and additionally “waiting another 60 seconds for network config”. After this grace periode, GDM or LightDM does not start correctly.
Solution: The kernel is configured to have the PId and Lock files in /run, while most of the daemons still use /var/run and /var/lock. The migration script failed to create the symlinks.
- Start the system, at the blank screen press Ctrl-Alt-F1 and log in as root (or as user and sodo to root) to the text console.
- Backup-remove the original directories:
- mv /var/run /var/run.backup
- mv /var/lock /var/lock.backup
- Create the missing symbolic links
- ln -s /run /var/run
- ln -s /run/lock /var/lock
- Reboot the system with “reboot”
With thanks to: UkSkyAdmin
Upgrade to Ubuntu 11.10 problem: Waiting for network configuration then black screen solution