“Su” stands for substitute user. Sign up to join this community The version of util-linux is the latest one (2.28.2-2). I'm typing my user password in (not a capslock issue), and for some reason it still says 'Authentication Failure'. I get the root privilege when I type sudo. (And it was the same ubuntu, ubuntu 12.04 LTS) PAM (Pluggable authentication modules) are at the core of user authentication on modern Linux operating systems. Forum rules LMDE 2 has reached end of support as of 1-1-2019. ... the root user is not enabled on Linux Mint, so su - or su does not work. To allow users in a specific group to switch to another user account without a password, we can modify the default PAM settings for the su command in the /etc/pam.d/su file. LMDE Forums. Any idea on what is … Welcome to the Linux Mint forums! I've modified the shortcut link on my local Linux Mint desktop to add "-p password" to the command line which launches the Manager. 2 posts • Page 1 of 1. Stack Exchange Network. The /etc/pam.d/su and /etc/pam.d/su-l files are just as they are supposed to be (I have another machine running Archlinux on which su works correctly, and the files are identical). Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. If executed without a username, for example su -, it will login as root user by default. LMDE Archive. It only takes a minute to sign up. Authentication failure. Debian Edition Support. What Is Su? Archived topics about LMDE 1 and LMDE 2. Help! A common challenge faced by new Linux users is understanding the difference between “su” and “su -“. That works locally. The password is the correct one, I use the same with sudo and works fine. Murdock Level 3 Posts: 144 Joined: Sat Apr 03, 2010 4:23 am This article will help you briefly understand the difference between “su” and “su -“ in Linux systems. The sudo command runs any command as another user account and is commonly used to elevate permissions so that the command is run with elevated security privileges (which in Linux terms is known as the root user).Sudo works for a … Using PAM Authentication Module. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.. Visit Stack Exchange The su command doesn't seem to be working on my fresh Fedora 29 installation. To log you as root on Linux Mint you have to use ... To log you as root on Linux Mint you have to use sudo -i or sudo su. It asks for a password and then it just says: su: Authentication failure. FAQ; Board index. Is there some other password (one I'm not aware of) I'm supposed to be using other than my user password? I've had this ubuntu before, on another hard drive and I didn't have this problem. 1. That works remotely. $ su - Password: su: Authentication failure $ The USB terminal password is also not working, and these always worked previously. But when su asks for the Password, which I type in, the terminal says su: Authentication Failure Usual port and password. I've added the Linux machine to the list of computers monitored by BoincView (a Windows predecessor of BoincTasks). Quick links. Connect to a wireless network as standard user without administrator authentication Linux Mint 17.3 0 Linux Mint 18.1 Reset forgotten Admin password when I remember the root password Skip to content.