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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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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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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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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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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Jan 15, 2010
Recently stated using ubuntu, and installed Konsole. when i type try to become the superuser, i cant type my password in, flashes a little though. and when i do type my password in, it says its wrong. tried to look for a solution, but im out of ideas now.
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Jun 22, 2010
I have a server hacked when i try to log in i type root but won't let me type a passwdthere are no services up, can't see page mail nothing
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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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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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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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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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Oct 8, 2009
I use kubuntu (8.04) which does not have a root account.
[sudo] password for ts:
However, starting xclock or gvim on root shell on konsole has the "Can't open display" error appears.
Error: Can't open display: localhost:0.0
Press ENTER or type command to continue
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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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Aug 19, 2010
I'm running PCLinuxOS with no other OS installed. Thought I'd have a go at chainloading. just for interests sake.So, I opened Konsole, entered su and entered my root password. The command line turned red so, I imagined all was well. But when I then keyed in '/boot/grub/.menu.lst' I was refused access.
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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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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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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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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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Jan 8, 2010
hello i am trying to change my password, but when i type in the new password i get this:"The password is longer than 8 characters. On some systems, this can cause problems. You can truncate the password to 8 characters, or leave it as it is."my question is what kind of problem could i get and how can i change so i have to log in every time i start the computer?
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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
[code]...
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May 16, 2010
im trying to install firefox and i ran "makepkg -s" and got this message,
==>Making package: firefox 3.6.3-1 i686 (Sun May 16 00:28:27 PDT 2010)
==>Checking Runtime dependencies...
==>Installing missing dependencies...
We trust you have received the usual lecture from the local system Administrator. It usually boils down to these three things:
#1) Respect the privacy of others.
#2) Think before you type.
#3) With great power comes great responsibility
Password: Do i type the password for "root"? Or is this some kind of riddle?
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May 14, 2015
I edited fstab to automatically mount my windows data partition on boot, but I screwed it up by not specifying the file system type, however that is not the problem, I was able to fix that easily. The problem was that when it failed to mount the partition, Debian automatically entered root and I guess that is to be expected in order for me to fix it, but I never configured a root password and it just gave me full root access without asking any password, not even my user password. I though that was strange so I set the root password and sure thing it asked me for the root password this time without automatically logging into root....
I then tried to lock the root account to see if it will ask me for a password or not, it did but of course I wasn't able to login as root because it was locked now and I was left with no way to access the system. I had to fix fstab from a live cd so that I can login normally as the user....
I didn't know what to search for or if that is the expected behavior if you don't set root password during installation, but it just seemed a bit strange to automatically enter root when you specifically disable root login during installation...
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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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Feb 19, 2011
I was using the latest stable release of Debian, dual-booted alongside Windows Vista, with the GNOME desktop, installed via netinst, trying to build and install a library that I knew and trusted, when suddenly I couldn't open the Root Terminal. I clicked the link (in Applications->Accessories (I think, whatever the top one is)->Root Terminal), and in the taskbar I saw an item that said "Starting Root Terminal". A few seconds later, that went away, but the terminal still wasn't open. I tried the regular user terminal, to see the same thing happen. Unsure of what was happening, I tried restarting my computer, since that's always the first step you should take in computer problems.
When I restarted, GNOME wouldn't start. The screen would flash a bit for a few seconds, then a dialog box would appear over a background of static that said "The greeter application is crashing. Attempting another one...".t would then go back to the DOS-style kernel, wait a second, and then the same thing would happen. After several of that, I would get a blue screen which said something to the effect of "It has been detected that the desktop environment has crashed six times in the past 30 seconds.
Waiting two minutes before trying again." When it did that, I tried logging in as root to assess the problem. I gave it the correct password, but it said that it was an incorrect login. After several tries (to ensure I didn't mistype the password), I logged in as myself. Same problem. I tried the su command, with the correct password, and it said it couldn't authorise it.
After a lengthy conversation with a friend of mine who was very good with computers, he basically summarised that he had no clue, but that his best guess would be a virus. Upon running the Linux installer, I found the Repair option. Not being particularly familiar with Linux, I used it simply to backup my important files onto a flash drive. I then tried running the Install option, in an attempt to simply write over my existing Linux and make it new again. The installer, however, consistently froze up when trying to start the partitioner, on the "Checking disks..." stage. I figured it was a problem with my partition. In my naivete, I simply used the Windows tools to clear that partition... It destroyed GRUB too, so I couldn't run any OS. I figured my computer was pretty well screwed, and at that point just decided to bring it into the shop and have them completely wipe it.
my computer was backed up onto an external hard driven I brought it back, I reinstalled Windows. Upon restart, it said that it was still looking for GRUB, which made no sense to me. After messing around with it a bit, I decided to just reinstall Linux too. To my lack of surprise, that fixed the problem. Both OS' now ran just fine. The first thing I did on Debian was to install the Clam Anti-Virus, which I understood to be one of the best Linux anti-viruses. However, within about 10 hours, got the same problem as originally. I wasn't doing any of the same things, and between the lack of consistency in activities and the fact that I had an anti-virus running,figured it wasn't a virus. Not knowing what to do, I just left it and have been using Windows since.
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May 21, 2010
I've setup an openldap server, and am trying to add .ldif files to the database.
I am constantly getting the following error, no matter what I do:
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Jun 21, 2015
I installed Jessie with Cinnamon alongside Win 7 - all went quite well though I did have to do a bit of guessing along the way.
Following online tutorials etc, I tried to install sudo from the terminal. It did not go well - some stuff appeared that was not shown in the instructions from many sites. So I abandoned it, or so I thought.
Then I discovered that my root password was no longer recognised. So I reset it, following online instructions.
This was successful apparently, as I can log in as root and see this in the terminal.
But on trying to start Synaptic ( and later others), I found that the new root password would is not authenticated, but my user password does authenticate successfully. This seems to be the wrong way round!
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