Ubuntu 12.04 failed to reboot after unsuccessful update done on 28/8/2013

1. I was updating kernel, mesa, firefox, thunderbird, python and some other packages on 28/8/2013. My internet connection terminated while updates were ongoing. So Laptop did not started in next reboot.

2. I read all post regarding editing grub menu and setting nomodeset option along with other options but none of them worked for me.

   Except quiet splash nomodeset vga=0×31 and quiet splash i915.modeset=1 gave me front booting screen, but no avail,like dots moving in a front screen of Ubuntu... It did not bootup though. Only option was CTRL+ALT+Del when I press CTRL+ALT+Del it starts booting...it shows dots moving...but since it is rebooting, it does not load Ubuntu.

3. when I pressed CTRL+ALT+F2, command line shows up, when i tried to run firefox from command-line, it shows message: no display specified x11 initiallization failed

4. I tried to run in failsafe graphic mode but got error message as:

   xinit/;unable to run server /usr/bin/x
   non integer argument  /usr/shre/xdiagnose/failsafeserver:line 87: [ -lt:unary operator expected
   gdm:unrecognized service
   stop:unknown instance:
   xinit /usr/share/xdiagnose/failsafe
   
   xinit /etc/x11/xorg.conf.failsafe with- -- /usr/bin/x -br -once -config 
   /etc/x11/xorg.conf.failsafe -logfile
   /var/log/Xorg.failsafe.log
   
   xinit:unable to run server "/usr/bin/X" no such file or directory
   

   P.S. But I checked at /usr/bin/Xorg I found server is present there

5. Error message in /var/log/syslog : ACPI _OSC request failed, returned control mask:0x1d

6. Not able to boot from LiveCD: When I tried to boot from pendrive, laptop shows a blank screen with blinking cursor, after waiting for 15 min, no progress so hard reset.

7. Don't suggest me to replace Ubuntu 12.04.

8. My laptop configuration is: Samsung NP300E5Z, 4GB RAM, Intel i5 2nd generation with inbuilt graphics 3000 series, Windows7 and ubuntu12.04 in dual boot mode.

9. I am able to login to Windows without any problem, so I think it is not Grub problem.

I checked almost 40 posts and related discussion, but none of them worked for me.

Try following steps once to fix your problem

• When your system starts press CTRL+ALT+F1 to go to CLI tty1, login using your credentials.

• Then execute following commands in series, i,e one after another:

  sudo apt-get autoremove
  sudo apt-get autoclean
  sudo apt-get --purge remove $(dpkg -l | grep "^rc" | awk '{print $2}' | tr '\n' ' ')
  sudo apt-get update
  sudo apt-get -f install
  sudo apt-get dist-upgrade
  sudo apt-get upgrade
  

• If everything goes fine then reboot your system and check whether it solves your issues. Run this command to reboot your system:

  sudo reboot
  

You can also give a try to fix your problem using Safe Mode if above method doesn't help you

• When your system starts chose Recovery Mode (2nd option in grub menu).
• From the Menu just go to Grub option, it will give a message like Updating grub will mount your system in read/write mode. Just chose yes to mount your system in read/write mode. It will update your grub and will exit from Grub menu.
• chose network option it may enable your network.
• Then chose dpkg menu from the list, chose yes for all.

• Finally chose root option and login. Execute following commands one after another:

    apt-get autoremove
    apt-get autoclean
    apt-get --purge remove $(dpkg -l | grep "^rc" | awk '{print $2}' | tr '\n' ' ')
    apt-get update
    apt-get -f install
    apt-get dist-upgrade
    apt-get upgrade
  

  Then reboot your system and check whether your are able to use Ubuntu or not. Run this command to reboot:

    reboot
  

Hope either of this method works for you.. Reply if something goes wrong.