Ubuntu 11.10 Upgrade Errors

On October 13,2011, Ubuntu released yet another Os code name Oneiric Ocelot( I wonder where they got that name from.) also know as Ubuntu 11.10 six month after the release of Ubuntu 11.04(Natty Narwhal). In actual fact, Ubuntu release in every six month.

Like any other version of ubuntu, every release initially suffers from range of incompatibility errors and Ubuntu 11.10 is of no exceptions. Two major errors that confront people migrating from Ubuntu 11.04 to Ubuntu 11.10 are:

  1. Blank Screen error
  2. waiting for network configuration error

I encountered these problems when upgrading from 11.04 to the 11.10. And after 24 hours through a deep search on the internet, I arrived at a solution which I would like share with you.

The source of these problems mostly deepend on the machine display drivers. Incompatible drivers such as NViDia can lead to blank screen after a successful upgrade.In order to avoid this problem, uninstall all third party display drivers before doing the upgrade.In a situation where you failed to uninstall the drivers, you have to follow these steps in order to restore your desktop.

Boot your machine and Press Ctrl+Alt+F1 to enter into command line mode

change Permission

 Sudo -i

move the content of run to run.bak

mv /var/run /var/run.bak

create symbolic link in var

 ln -s /run /var

move the content of lock to lock.bak

 mv /var/lock /var/lock.bak

create symbolic link in var

ln -s /run/lock /var

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