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Today I upgraded my ubuntu 14.10 to 15.04 but during installation the system hung up and I was forced into a hardware reset. Now after startup, right after I enter my password, the screen flickers. I used a few shell commands in recovery mode in the hope of completing an upgrade:

mount -0 remount, rw / mount --all
dpkg --configure -a
apt-get -f install
apt-get update
apt-get dist-upgrade
apt-get autoremove
apt-get install --reinstall ubuntu-desktop
update-grub
apt-get clean

and then rebooted.

how to recover the system/complete the incomplete setup update?

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  • You already asked this at askubuntu.com/questions/622829 .
    – JdeBP
    May 14, 2015 at 11:17
  • I too did 15.04 to 15.10 and now screen uncontrollably flickers ... luckily I did a backup onto Dropbox prior ! ... still ts my system Oct 23, 2015 at 15:46
  • Are you using a laptop or something that has Intel integrated graphics?
    – Max Kulik
    Dec 28, 2015 at 7:32

1 Answer 1

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Try this method for login flash back:

  1. Start the computer, Press Alt + Ctrl + F1 to login the terminal
    $login:
    $password:
  2. sudo chown -R $USER:$USER $HOME

This resolved my problem in ubuntu 15.04.

All the best.

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