Debian :: Authentication Failure With Correct Password?

Aug 8, 2011

I was hoping that someone could point me in the right direction. I just did an install and the os is up and running. During install, I set a root password and also set up a regular user account. The only option at login is the regular user acct. Needless to say, the os asks me to provide the root pw for just about everything I need to do.get an authentication failure. (I assume that this is the same as permission). I can find plenty of info on how to restrict access but nothing relevant to my problem. Just to rule out an install problem, I installed the os a 2nd time. I am very sure I have my passwords correct. One other thing to note is that on the 1st install, I used a different pw for root and regular user. On the 2nd, just to keep is as simple as possibl I used the same pw for root and reg user account. I am new to debian, but the distro that I have been using (slackware)

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Debian :: When Open Up Konsole And Type 'su' And My Root Password - Authentication Failure ?

Apr 8, 2010

My system software is installed on an encrypted LVM on hda1 and hda2. My home directory takes up the whole of hdb1 which is also encrypted. I can boot up into the kde desktop okay, but when I open up konsole and type 'su' and my root password I get the message "su: Authentication failure". I am absolutely certain that I am using the right password.

Even more strangely, if I fire up synaptic and give it that same password I am able to install software. Does anyone have any suggestions as to what's gone wrong and how I can fix it?

I can also type Ctrl-Alt-F2 and log in as root to do administrative tasks without any problems so I cannot understand why konsole has locked me out.

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Ubuntu :: Su Password Authentication Failure?

Oct 8, 2010

I had installed xp & ubuntu on my laptop hp compaq cq-40. Then i got this problem on su password authentication failure. I had alreadyformat and re installed ubuntu. But the su authentication still failure,

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Ubuntu :: Try To Use Su - Get Password Authentication Failure

May 3, 2011

I am running Ubuntu 11.04 which I like very much (except for Unity - so I am using Ubuntu Classic).

Whenever I try to use "su - " I get Password Authentication Failure. I have checked Caps Lock (obviously) and have also tried resetting the password using "passwd" - but with no success.

If I use "sudo ...." with a command the password is accepted.

I have the same software installed on two computers but the problem only occurs on one - the other is OK!

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Ubuntu Security :: Netbook Remix: Password Authentication Fails (Correct PW)

Sep 16, 2010

I'm running eeebuntu on a Toshiba Satellite R10, I installed the Netbook Remix Package which was apparently a horrible idea. I cant click properly. I tried to open synaptic package manager to uninstall it but it tells me my password is wrong, which i know it is not. Is there anyway to fix this, i can open terminal.

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OpenSUSE :: Authentication Failure Of Root Password?

May 2, 2010

have been experiencing an error (the past few weeks) whenever I try to install a software package using the default installer. Each time I enter the root password it is not accepted and I am unable to get past it and the installation fails.This is the error message that is issued:[PK_TMP_DIR|dir:///var/tmp/TmpDir.mf2zCf] Repository already exists.I am able to enter the root password in a terminal session without any problem along with using the Install Software option in the main menu.

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Security :: Su Authentication Failure Without Password Prompt?

Jan 11, 2011

I have a strange behaviour on a Slackware 13.1 box:

user@host$ su
su: Authentication failure


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Fedora Installation :: Enter The Password And Get - Authentication Failure - 12

May 9, 2010

I just installed Fedora 12 on HP Pavilion (dual boot with Windows vista). I made it all the way through the installation and created my user account. A few seconds later I got the login screen asking for my password. I enter the password and get "Authentication Failure."

The name that shows up on the login screen is my full name, not the user name that I created. Is that wrong?

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Ubuntu :: SU Authentication Failure / Default Root Password To Enter?

Feb 19, 2010

I have installed Ubuntu 8.04 inside windows and every time I go to the terminal and type "su" it asks me for a password. Well the password I set before the install doesn't work, it gives me an authentication failure. I thought that since it was inside windows it didn't set me as a root user. I go to user groups and I see my name there and then "root" above it, but its grayed out. Is there a default root password I can enter?

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General :: Secure Box - Authentication Failure - Long Strong Password Can Stop To Prevent From Attacks?

Mar 17, 2010

we are using linux email server axigen past few years. we keep port open ssh and pop,smtp webmail etc. ssh use for remote trouble shooting. so through firewall it is globally accessable. we notice many attacks coming to our machine, also some people try to enter in our system but failure. as example see below a log come in messages file

Mar 17 09:19:50 sa1 sshd(pam_unix)[21231]: authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost= user=root how we can secure more. as per my understanding only good long strong password can stop to prevent from attacks.

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Ubuntu :: Stuck With A User With No Password - "authentication Failure"

Dec 18, 2010

I am about to sell a computer with ubuntu on it, and I created a user with no password and deleted my previous user. Now there is only one user account, and it has a blank password. However, any time I need root access (sudo, configuring user accounts, etc.) the system won't accept a blank password. It just says "authentication failure." Deleting my other account was silly. I am stuck with just one user account with a blank password!

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Ubuntu :: Gave Usual Password And Get "authentication Failure"

Dec 16, 2010

I am trying to become su in the terminal window. It asks for my password, I give my usual password and I get "authentication failure". I thought that my log in password works for the su as well?

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Debian Configuration :: Login As Root But End Up With An Error - Su: Authentication Failure

Jul 29, 2011

I am trying to login as root but i end up with an error that says: su: Authentication failure

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Debian :: Sshd Disable Password Authentication?

Oct 13, 2010

I set up a debian lenny in vmware on my windows machine. The network interface is set to bridged, so the virtual machine is connected directly to the university network i am connected to. I want to be able to ssh into the vm.I installed sshd via "apt-get install ssh", generated a key pair with puttygen and copied the public part to "/home/user/.ssh/authorized_keys", set rights to 600 and then tried to disable password authentication completely, following the "securing debian" documentation.this is how my /etc/ssh/sshd_config looks now:

# Package generated configuration file
# See the sshd(8) manpage for details
# What ports, IPs and protocols we listen for


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Ubuntu Security :: Configure SSH Key-based Authentication And SSH Password Authentication In Same Machine For Different User?

Jan 10, 2010

I want to configure SSH key-based authentication and SSH password Authentication in same machine for different user .

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Ubuntu :: Keeps Refreshing The Screen Even If Authentication Is Correct

Apr 17, 2010

I was trying to get my brand new xubuntu install on a Dell Latitutude get going with a kvm switch. I shut down the machine -> connected the kvm cable -> powered it back on and the keyboard/mouse work fine in the login screen, HOWEVER, I just can't get past the login screen, it keeps refreshing the screen even if my authentication is correct.

I unplugged the usb kvm cable, restarted but the problem does not go away.

I can't login to recovery mode (press esc during GRUB load), it doesn't offer any recovery options, goes straight to the login screen.

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Ubuntu Networking :: WEP Wireless Authentication Rejected (Though Key Is Correct)?

Feb 18, 2011

I have 2 laptops running Ubuntu 10.04. One connects to my Linksys wireless modem fine while the other does not. The one that does not connect, will connect fine within the instances of Windows XP SP3 and Puppy Linux 5.1 that run on the same laptop. Ubuntu wireless worked fine with version 8.04 on this laptop before upgrading to 10.04.

When trying to connect within 10.04, Ubuntu pops up the dialog box to enter the authentication key. It rejects the correct key, and after a moment, pops up the same dialog box asking for the key again. I'm using WEP 40/128-bit encryption and the key I enter in the dialog box is the correct 26-character key.

The laptop is a Toshiba Satellite Pro 6000 (1g ram/40g disk). Here are some vital outputs root@user-laptop:/home/bsmis# iwconfig

lo no wireless extensions.
eth0 no wireless extensions.
irda0 no wireless extensions.
eth1 IEEE 802.11b ESSID:"kr_wireless"
Mode:Managed Frequency:2.457 GHz Access Point: None
Bit Rate:11 Mb/s Sensitivity:1/0


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Ubuntu :: Authentication (password) Window Shakes And Won't Let Me Enter A Password?

Apr 28, 2010

I have a rather difficult problem. Every time I need root privileges and I am asked to authenticate (i.e. Update Manager, mounting a partition, etc), the password window comes up, shakes and immediately closes, leaving me with no chance to enter a password. What to do?edit: this is NOT the login window, just the little dialog that pops up when you need elevated privileges.

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Fedora :: Authentication Failure In GUI

May 22, 2010

Im using FEDORA 12 (constantine )....Everything was working fine.....until yesterday when i tried login to my GUI(gdm) it says authentication failure. so i tried logging in from CLI and it didnt worked either...(it didnt say "password incorrect",rather it it simply reset the screen to "login name:",thats weird...right?)

Then i tried to login as root from from CLI (by default Fedora does not support root login to GUI?) and i was able to login.....

Then it said "System powering down in one minute"............. i didnt understand why that happened.....! but it didnt power down in one minute...

I tried changing my user passwd...still no change.....

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Fedora :: Authentication Failure After Upgrade

Jun 13, 2011

I cant access my box after upgrading from fedora 13 to 15 i wasn't near the computer during the process and i don't know if it asked for user and password ,but its upgrade and it need to have my old setting so why i'm not able to log in at all , even not as root.

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Ubuntu :: SU Authentication Failure In Terminal

May 29, 2011

su doesn't work in terminal. i found one (click), and tried it, but it didn't fix it. Everything else works. Sudo, Software manager, synaptic package manager... I know i'm putting the right password in. Heres a picture, ignore everything except the last 4 lines.

Everything before it was me trying a proposed fix in the thread mentioned above.


sudo dpkg --configure -a
sudo apt-get clean
sudo apt-get update
sudo apt-get upgrade

I've tried changing my password as well. I got the same error. Also, "sudo su" works fine. I'm not sure if theres a difference as i'm new to ubuntu....linux in general. Can you explain the difference between sudo and su, and sudo su? Also, can you explain what any commands you need me to do are? that way, i'm not just leaching.i'm trying to do is install Java!



Release: Ubuntu 11.04 (natty)
GNOME: 2.32.1
Kernal: 2.6.38-8-generic

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General :: Error - Su: Authentication Failure

Jun 16, 2010

i have been running Ubuntu for about 3 days now, finally getting all my files moved back to the drive and what have you.I came from running windows, and an Android phone with full su access, and done up all custom-like..I am loving the speed, etc. great experience so far. BUT: the headphone port on my laptop is broken, and so I run [ran] and external soundcard, a Creative X-fi 5.1 USB SC. I have found linux drivers for this unit, and am trying to install. I have googled the crap out of how to do this, yet am getting stuck.

Here is where I'm getting stuck. I have extracted the package, entered into the sub folder, and am trying to run the Make install:

...laptop:/tmp/xfi-$ cd ./xfi
...laptop:/tmp/xfi-$ su -c "make install"
su: Authentication failure

what in heck do i type at password... have I NOT done something, am I doing something wrong.... it does not accept my normal password, so I am lost.

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Fedora :: Authentication Failure On Pure-ftp Server ?

Apr 16, 2011

OS=FC14 x86_64

I've installed pure-ftp, and the firewall is open on port 21, the router has port forwarding.

I can connect to this machine, from my smart-phone and a laptop using its IP Address

I'm getting user OK but its not accepting my password or one I just made on another account

This is whats happening:-

What layer of extra security is stopping this working, as the guy attempting access is trying to send a file to big to attach to an e-mail.

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Ubuntu / Apple :: Authentication Failure After Installation ?

Feb 25, 2010

I managed to get Ubuntu installed, however, it just won't let me log in. I perform the net-install, and tell it my user name and password. However, once the install has completed, and the system rebooted, I cannot log in to Ubuntu (on X-screen or TTY). I've tried it twice - once with Karmic Koala Ubuntu installed with GNOME - the other with just CLI and they both fail.

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Ubuntu :: Authentication Failure On Users And Groups

May 8, 2010

I upgraded from 8.04LTS to 10.04LTS desktop. I can do sudo as root at the terminal, but I can't pass authentication trying to add a user (System->Administration->Users and Groups).

Here is what I got: An error occurred while checking for authorizations: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. You may report this as a bug.

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Ubuntu :: Facebook Authentication Failure In Empathy?

May 19, 2010

In Empathy, Facebook worked just fine but upon a recent restart of Empathy, I started to get an authentication error and I can no longer get Facebook chat to work.My password has not changed.

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Ubuntu :: SU Command Not Working - Authentication Failure

Apr 2, 2011

Here is what happens. I type in "su", without the quotes, to switch to root. I enter my password.
Code: jon-Tuxbox:~$ su
su: Authentication failure
jon-Tuxbox:~$ It fails, and I get kicked back to the command line. I recently fixed the permissions on the shadows file and the su file in the bin directory, and that is what caused this. Before it would give another error. I tried resetting the password for root, but it didn't fix it.

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General :: Authentication Failure After Change To Cracklib?

Sep 3, 2009

I was messing around with changing the dictionary for our PAM cracklib module and seemed to have stuffed something up.When I attempt to log in through a telnet session with any user that has a password I getAuthentication FailureThis session is no longer connectedI am still able to log in via the Web admin using the root user/password.I can also log in from a telnet session if the user has no password.

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General :: Authentication Failure In LDAP After Modification

Jun 3, 2011

I Configured LDAP Server on ubuntu Server 10.04 ,(using url ldap) and Client also it's working fine. After that I changed to ssl encryption and create certificate in server side. Now it's not authenticating from server it's shows Incorrect Password, but I can login though terminal if I am root user ,then it not ask any password it's logon to ldap user. After I changed to ldap server to ssl encryption and made one changes in client side uri ldaps://ip-address/ (/etc/ldap.conf).

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Server :: Postfix SASL Authentication Failure ?

Jun 19, 2011

Am unable to send mail from Outlook to my Postfix SMTP server.

Am getting the following in the /var/log/maillog.


Think I've pretty much followed the instructions correctly here.


Also, I looked for the PID of the smtpd and did a strace on it.



However, when I looked at the permission of this file, it should be accessible by everyone.


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