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Full Discussion: Blank screen after upgrade from 11.10 to 12.04!
Operating Systems Linux Ubuntu Blank screen after upgrade from 11.10 to 12.04! Post 302740831 by yifangt on Thursday 6th of December 2012 11:31:29 PM
Old 12-07-2012
Blank screen after upgrade from 11.10 to 12.04!
Hello,
I got blank screen when reboot after I tried to upgrade Ubuntu (64 bit server version) from 11.10 to 12.04 at update manager.
The normal login GUI is missing, but mouse cursor is fine. Then I switched to terminal (tty1 ~ tty6), which looked fine and showed it is Ubuntu 12.04 ! (Forgot how I got it, but I did see it is 12.04 and I was reminded
Code:
12.10 is available!

The upgrade seems completed, at least partially, but the logon GUI is missing! I had thought the upgrade is broken, and have tried many different ways to fix it:
Code:
1) sudo apt-get update && sudo apt-get upgrade
2) sudo do-release-upgrade
3) sudo dpkg --configure -a
4) sudo apt-get -f install
5) sudo apt-get dist-upgrade

None worked!
Had thought the upgrade is simple by the above commands, but did not turn out as expected!
And the error massage were too long to be posted here( have not figured out yet how to copy pasted the message here as they were saved in the crashed PC!)
Generally some errors with the upgrade can be fixed after reboot thru synaptic manager. This time it is not the case as I can't boot at all!
Before I burn a setup CD to give my last shot, I am trying get help from here first.
Thanks a lot in advance! YT
 

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LEARN ABOUT DEBIAN

update-manager

UPDATE-MANAGER(8)					      System Manager's Manual						 UPDATE-MANAGER(8)

NAME

       update-manager - graphical management of software packages updates

SYNOPSIS

       update-manager [options]

DESCRIPTION

       Update-manager  is a frontend for the apt package management system. It allows you to perform some actions of the command line tool apt-get
       in a graphical environment.

       Update-manager is especially designed for upgrading your system, or migrating your system towards a more recent version.

OPTIONS

       For a daily use, you may launch update-manager with no options so that your system is just upgraded.

       For migration purposes, update-manager accepts some options:

       -h, --help
	      Show a similar help message

       -c, --check-dist-upgrades
	      Check if a new distribution release is available

       -d, --devel-release
	      Check if upgrading to the latest devel release is possible

       -p, --proposed
	      Try to run a dist-upgrade

       --dist-upgrade
	      Try to run a dist-upgrade

ACTIONS PERFORMED DURING AN UPGRADE TO A NEW VERSION

       * eventually reinstall the package ubuntu-desktop

       * switch to an updated sources.list entries

       * adds the default user to new groups if needed

SEE ALSO

       Synaptic, sources.list, aptitude

AUTHORS

       update-manager was developed by Michael Vogt <mvo@ubuntu.com> with various contributors (see AUTHORS file)

       This manual page was originally written by Bruno Mangin and Michael Vogt <mvo@ubuntu.com>.

COPYRIGHT

       Copyright  (C)  2006-2007 Canonical

       There is NO warranty.  You may redistribute this software under the terms of  the  GNU General  Public License.	For more information about
       these matters, see the files named COPYING.

								  August 2, 2007						 UPDATE-MANAGER(8)
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