UBUNTU 12.04 LTS. Please help

Srikaanth

Junior Member

Jul 28, 2012

143

82

• Aug 31, 2013

• #1

I dual booted Ubuntu 12.04 along with Windows 7 yesterday. I can login to Ubuntu with my password . But when I use su or sudo command and enter the same password, I get "su: authentication failure"

I need to fix this asap.
Thanks in advance.

 

Srikaanth

Junior Member

Jul 28, 2012

143

82

• Aug 31, 2013
• Thread Starter Thread Starter

• #2

I'm not able to use "sudo passwd" to change the password as even sudo command won't accept my login password. it says "Sorry, try again"

 

Conor

Elite Member

Nov 7, 2012

3,621

6,217

• Aug 31, 2013

• #3

Try reinstall?

 

Patel

Senior Member

Mar 1, 2011

1,154

1,519

• Aug 31, 2013

• #4

Are you sure you are logged in as root? Run terminal as root maybe that should help

 

1337python

Regular Member

Jun 18, 2013

395

239

• Sep 2, 2013

• #5

You have to set your Root password first, you can do that by typing "passwd", no need for "sudo passwd" I think you have to enter your current password aswell, or if you don't you don't I'm currently using windows, so I can't say exactly. Just type "passwd" enter your new passwords and it will work. I hope I helped.

 

bartosimpsonio

Elite Member

Executive VIP

Jr. VIP

Mar 21, 2013

24,782

31,562

• Sep 2, 2013

• #6

On Ubuntu you don't log in as root. You need to sudo everything.

To change the root password you need sudo passwd root