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Old 09-28-2014, 12:18 AM   #1
Sha-bangs
LQ Newbie
 
Registered: Jun 2014
Distribution: many
Posts: 4

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Can't Login Ubuntu 12.04 LTS login loop?


Do to a power failure during upgrade, the first thing I had to do is figure out why my filesystem failed to mount so,:


I gott to the maintenance shell, and tried this:

sudo mount -o remount,rw /
sudo dpkg --configure -a

Here is where I got errors to bluez etc.

Then I tried:
sudo mount -o remount,ro /
sudo sync
sudo reboot

When I rebooted, I made it all the way into the login screen and started patting myself on the back, much to my chagrin
When I entered my username and password the screen flashes what looks like an unexpected error screen for like a millisecond and then I am right back to the login screen. Yes I checked my password and no there is no login/password incorrect msg. Yes, I did try logging in on ctrl +alt +f1 to no avail (interestingly enough this would not except my username/password).

Suggestions?

Thank you in advance for your consideration,
Bangs
 
Old 09-28-2014, 01:03 AM   #2
k3lt01
Senior Member
 
Registered: Feb 2011
Location: Australia
Distribution: Debian Wheezy, Jessie, Sid/Experimental, playing with LFS.
Posts: 2,900

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If you have a live disk or usb I would boot into a live session and repair the installation via chroot.

Code:
#mounting
mkdir /mnt/tmp
mount /dev/xxx /mnt/tmp ###where xxx is your disk designation e.g. sda1###
for i in /dev /dev/pts /proc /sys; do sudo mount -B $i /mnt/tmp$i; done
cp /etc/resolv.conf /mnt/tmp/etc/resolv.conf
chroot /mnt/tmp

#Unmounting
for i in /dev/pts /dev /proc /sys; do sudo umount /mnt/temp$i ; done

#Some repair commands
apt-get update
apt-get upgrade
apt-get install -f
dpkg --configure -a
apt-get dist-upgrade
 
Old 09-28-2014, 01:22 AM   #3
jdkaye
LQ Guru
 
Registered: Dec 2008
Location: Westgate-on-Sea, Kent, UK
Distribution: Debian Testing Amd64
Posts: 5,464

Rep: Reputation: Disabled
I had a similar problem with Ubuntu 14.04. I kept getting sent back to the login screen after entering my password. The problem was solved by setting all the permissions in my home folder like this:
Code:
sudo chmod -R ugoa+rwx /home/*myusername*
jdk
 
  


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