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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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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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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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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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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Jun 11, 2010
Succeeded in connecting to internet using my wll phone. I can now connect using 'wvdial' command in root terminal. But I want to connect through terminal. I tried 'sudo wvdial' command. Then I am asked for my password. But I cannot type my password there. When I type, nothing appears on the terminal window. Ofcourse there's no problem with my keyboard.
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Feb 25, 2011
how do i stop autoboot of ubuntu? and when i try do " su " in the terminal and i enter my password it says failed authentication
but i logged out and logged in again with the password and it worked? is there a default password
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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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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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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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Jan 11, 2011
I have a strange behaviour on a Slackware 13.1 box:
Code:
user@host$ su
su: Authentication failure
[code]...
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Dec 16, 2010
I have installed fedora 14 in my computer. I installed some applications from root. I created a user id. I am unable to install my internet (broadband connection) now. every time it shows the error "Authentication failure" "install from root" something like that. How can I switch between user and root. Or how can I login as root again?
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Jan 20, 2010
I just got Fedora 12, and I used su root to change the bin ownership to my primary developer account. For some reason, though, all subsequent attempts to log in as root have had authentication failure, be it through su or through the startup login screen. This does NOT occur for adminstrator tools such as Groups and Users.
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Apr 30, 2010
The only problem I am experiencing is that when I boot Ubuntu quickly finds my wireless network but does not automatically connect to it. A window then comes up asking me to "enter password for Keyring default". After having then entered this password the connection does take place and remain stable. So really no big deal but why do I need to do this every time I boot up. This is new to me. Never had anything like this on previous versions.
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Nov 30, 2009
I have installed Fedora11 onto my Dell laptop; as nice as it is whenever I log in I am prompted to "enter password for default keyring to unlock". Now, I don't recall ever setting one up, each password I try (e.g. the user or root) fails and gives me the prompt again. After a few clicks of "deny" it does go away but I want to know what it is and if I can stop it from prompting me).
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Dec 30, 2010
I'm using Ubuntu 10.10 and I would like to know a way to know what applications are asking you to enter password for default keyring to unlock. In the past that dialog used to appear at startup once but now appears twice and I would like to know which applications are asking me for the password. Is there any log where I can see it?
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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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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=210.51.13.120 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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Apr 18, 2011
I have a new CentOS server install. I am trying to connect from a windows xp box using putty ssh. I can get as far as putting in the password for root user and then it tells me access denied.
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Sep 7, 2011
Whenever I start a browser, it asks me to enter my root password because of some pgp keyring issue. I set my password as standard in seahorse, but no change.
The Gnome3 interface sometimes lags very noticeably.
Packagekit constantly blocks my zypper use, and it won't shut down. Not even after I log out and log in again. I tried just removing everything related to packagekit, but that just breaks everything.
Searching for repositories is a pain and there are too many different ones and I never know which one is the latest and how these will be upgraded in the future. Zypper itself is awesome, everything else about package and repo management is not.
I can't uninstall applications properly. I remove them via zypper, and when I do a distro update they get added back in. (gnome games for example)
Whenever I install or search for anything in zypper, I get hundreds of these errors: GConf Error: Failed to contact configuration server; the most common cause is a missing or misconfigured D-Bus session bus daemon. See GConf configuration system for information. (Details - 1: Failed to get connection to session: The connection is closed)..but it still finds something.
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Jul 13, 2011
I followed instructions to enter single user mode by adding single at the end of kernel line but after that it doesn't ask for root password but brings up the sh# prompt. Isn't that supposed to be insecure? I understand for this the grub password can be applied but even after adding "single" it should ask for root password..or it should not..??
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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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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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Jan 27, 2010
Can't seem to do it, wondering if anyone knows how? Normally there's something in sshd_config that can be switched to true or yes to allow root login but I can't see it in fedora 12.I can login via root at a terminal no problem, just not via ssh, I get access denied every time. Also, I need to login using password authentication.I've done: 227169 but that's just for GUI which I don't really need since I rarely ever log into the GUI.I have also searched through here and mostly only found info such as above, how to enable root login for GUI, or billions of posts about how logingin as root is bad but I cannotswer to my question.DISCLAIMER: Please do not reply to this thread if all you can contribute is the question of why I need root or to put some message telling me I can do everything using su, etc, etc. Please only contribute if you can answer my question. A: My machine and a valid quesiton. B: Spirit of Linux is open, not restrictive
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Jan 9, 2010
I just did a standard install of Fedora 12 including the specification of a root password and a user ID/Password.
When Fedora starts, it accepts the password for the user ID but it shows an authorization failure for the root passwword. However, in a terminal session the root password is accepted when I enter the "su -" command.
How do I get the Gnome Desktop to accept the root password?
Related to this is an interesting security issue when I use the "su -" command to switch to the root user in a terminal session. Apparently, I do not get full root privileges as far as Nautilus is concerned. Nautilus loads but has a very restricted range of files/folders. It won't let me access "Computer" so that I can drill down through "Filesystem", etc. In contrast, Gedit run from the terminal will allow editing of all files after I enter the "su -" command in the terminal window.
I have run "yum update" to install the latest version of all packages but nothing has changed. I'm downloading the DVD image of Fedora 11 but I hate to do a another total Fedora install if I can avoid it.
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Apr 5, 2011
I have just installed the latest version of ubuntu in my desktop (core i5 with 2gb ram, gnome desktop) when i try to log in root usin "su -" command....authentication failure occurs. what should i do ?....i distinctly remember root password and it is working otherwise like while logging in, opening install/remove software application etc.
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Dec 19, 2010
How to disable the NTFS drives root password authentication?When I try to access the NTFS drives for the first time after logging in, the system is asking for root password authentication.How can I disable this?
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Nov 15, 2009
openSuSe 11.2/Pidgin 2.6.2/KDE4.3.1 Have seen various threads about this, but no real fix. Everytime I start Pidgin I get the annoying prompt to "Enter password for default keyring to unlock".
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Jan 12, 2011
I am pasting sudo commands without problems as a user (ales in my case) and then immediately the ask the user password.
The keyboard seems to be dead, no keys work, not allowing me to enter the password.
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Feb 10, 2011
I've created LVMs, and use this after I have added new disks to the system. df -h give me some lines, and one of them looks like this:(this is the system which holds backup files - and I want to disconnect it from time to time to create a duplicate backup)
/dev/mapper/backup-backup 147G 123G 17G 89% /media/backup
Problem: When I disconnect this drive, the system will not boot. Gives me the "enter password for root" or click control+D to continue. How can I get around this check - if the disk fails to load, or have been taken out.
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