Linux mint authentication failure I'm connecting with my facebook account proxima_centauri Feb 20, 2019 · I have recently installed and setup sssd, pam and ldap on a host for connectivity to a LDAP server. * Get your chsh command working again today! I just installed LNX Mint Cinnamon 20. chsh Password Prompt and PAM: Authentication failure For this section, let’s assume we work as root directly or via sudo. . kinit command works correct (it has no output when I run it). 04. Apr 17, 2015 · A newcomer in Linux Mint with previous experience only in Debian and opensuse, I am habituated to work with su and not sudo; so I have set a password Mar 6, 2012 · You need to run ssh (the client, and possibly the server) with more verbosity to understand why authentication is failing. Yesterday, it complained about an authentication failure, but unfortunately I did not save the error message. With other servers, I've seemed to make more headway, but I still can't be seen when I chat. Authentication failure by Murdock » Wed Feb 02, 2011 7:38 pm Here's a bit of insanity for today. How do I fix or disable this behavior? Re: Empathy 'Authentication Failed' message by daveinuk » Mon Dec 27, 2010 10:32 pm Sorry i forgot to mention . cfg file will be somewhere in /boot. 3 - 64 bit) by linux_rage » Thu Dec 10, 2020 6:30 pm sounds like a plan - how can I update but save all the documents/work from 18. Anyone come across this problem Authentication Failure by gnu-stu » Tue Dec 28, 2010 10:03 pm Hi All, I've installed LMDE from the live DVD onto my lenovo (IBM) ThinkPad R60 four times now and each time I attempt to log into my new installation I get an "Authentication Failure" message and fail to login. I can't find anything on the forums about this, although I didn't look toooooo terribly hard. May 3, 2019 · I am adding the printer from the windows network via samba. I was trying to install the Gimp Plugin respository in Software Manager and of course it asked me to authenticate with my password. I get the root privilege when I type sudo. Jul 28, 2023 · Re: Can't run graphical apps as root. The password is right. Sep 24, 2020 · Tor Browser update failure [SOLVED] by lperg » Thu Sep 24, 2020 11:25 pm Yesterday my Tor browser stopped working after it attempted to update itself, something it had done many times without a problem. Oct 6, 2020 · 'Connection failed - Authentication to the connection failed' on top right. Nov 3, 2021 · I just installed LNX Mint Cinnamon 20. 04 LTS Box. This is not due to caps lock or other keyboard problem, as I can log in as root just fine (same password). Audio bluetooth dongle is working fine. In this guide, we will explore common authentication problems on Cinnamon Desktop and provide step-by-step solutions to help you regain control of your system. ' It connected briefly to one wifi on phone. Jan 6, 2020 · Maybe a mod or admin could place it there if this is the case!? So I can’t login on my Linux machine from my Windows machine. In this particular situation, printing from Linux Mint 19. Issue su: Authentication failure This issue is encountered when trying to su to root. Forum rules There are no such things as "stupid" questions. gmail. NoMachine (I’m using the free version) shows the Linux machine, so that’s not the problem. But when su asks for the Password, which I type in, the terminal says su: Authentication Failure I recently changed my user acct name and everything seems to be fine except for any sort of higher-level procedure (e. The session manager tries to use your username/password to unlock the screen. But when I try to login to this Linux, I get "Access denied" error. Fix Use sudo to become root: sudo -i su fails w Aug 18, 2011 · The server I was working on was configured with some sort of Windows Authentication through PowerBroker Identity Server (PBIS). sudo works, but only because I rescued it after chown-ing /usr in a derp moment. Sep 8, 2009 · Linux - Newbie This Linux forum is for members that are new to Linux. g gdmsetup) requiring authentication fails--dialog box vibrates and disappears, leaving it grayed out. Secure login with USB tokens, and configure two-factor authentication effortlessly. 06 and trying to reset password on Linux Mint 21 / Xfce. Anyone come across this problem Mar 11, 2023 · Thunderbird and Gmail - "Authentication failure when connecting to server imap. 4. 2 LTS The authenticity check confirms that the ISO image you downloaded was signed by Linux Mint, and thus that it isn’t a modified or malicious copy made by somebody else. Mar 6, 2012 · You need to run ssh (the client, and possibly the server) with more verbosity to understand why authentication is failing. I installed fprintd and pam following these instructions: $ sudo apt install libpam-fprintd $ sudo pam-auth-update selected fingerprint and then enrolled my index finger with the enroll Jul 20, 2025 · Learn how to set up USB authentication on Linux using PAM. Attempt Shell Change First, we try to change the shell of fisher back to /bin/bash: $ chsh --shell /bin/bash fisher Password: Copy Unexpectedly, we get a Password: prompt. 1. Aug 14, 2012 · Authentication failed Forum rules Before you post read how to get help. Damn thing was also a problem with 18. I am using Linux Mint 20. Bet when trying to use my OpenVPN from the network manager, it fails. A newcomer in Linux Mint with previous experience only in Debian and opensuse, I am habituated to work with su and not sudo; so I have set a password Jan 5, 2023 · Authentication failure, PoL, network settings by imWACC0 » Thu Jan 05, 2023 4:39 am Apr 13, 2019 · Greetings, I'm having an issue after logging into HexChat, especially with Spotchat. - Adding ppa file, which I downloa PSA: For people struggling with WiFi on Linux on WPA2 Enterprise with PEAP/MSCHAPV2, possible solution Dec 20, 2019 · I have a Linux machine that has a connection to the AD. I tried to install a few essential programs and it asked for my password at least 40 times per package, making it take at least 5x as long as it would otherwise. When I am connected to my Linux Mint Cinnamon Desktop-PC with XRDP, with my normal Account, I periodically get the request to enter my password. . Here's what happened: I Mar 22, 2023 · [Mint 21. The login keyring in Linux did not get unlocked when you logged in I have just clicked on a newly established launcher on my desktop. I recently changed my user acct name and everything seems to be fine except for any sort of higher-level procedure (e. Fix Use sudo to become root: sudo -i su fails w Explore common su authentication failures on Linux and learn effective troubleshooting techniques, including configuring access control, implementing multi-factor authentication, and following best practices for secure su usage. It is a simple url Jul 29, 2024 · VMware modules fail to install on LM 22 [SOLVED] by fatso » Mon Jul 29, 2024 8:16 pm I recently got my Thinkpad T14 and now I am trying to use my fingerprint for authentication (Lock screen and command line). Stick to easy to-the-point questions that you feel people can answer fast. Literally brand new to mint and linux in general, installed it about 30 minutes ago. Authentication Failure by gnu-stu » Tue Dec 28, 2010 10:03 pm Hi All, I've installed LMDE from the live DVD onto my lenovo (IBM) ThinkPad R60 four times now and each time I attempt to log into my new installation I get an "Authentication Failure" message and fail to login. polkit broken? by rattkjelke » Fri Jul 28, 2023 2:33 am I'm an idiot. 3? is there some cunning way to do this bearing in mind that everything seems to be in a state of denial of existence? Jan 1, 2019 · I have tried going to root in recovery mode in linux mint debian and it seems to work perfectly. 1 Cinnamon. Aug 21, 2021 · Authentication failure of root password Forum rules There are no such things as "stupid" questions. While I cannot login to the computer (which I was viewing from my main computer), the other computers can see and access folders and files on it. I went in to a terminal screen Apr 13, 2019 · Greetings, I'm having an issue after logging into HexChat, especially with Spotchat. I have just clicked on a newly established launcher on my desktop. Dec 3, 2022 · I can't reset my password. I get a constant populating SASL Authentication failure - it just goes on and on. When the username/password are incorrect you get the login failed for display 0 message. Oct 31, 2021 · I just installed LNX Mint Cinnamon 20. I feel like this is a big issue that isn't getting attention especially for new Linux users. I renewed the original launcher/shortcut because the original did the exact same thing. I installed the pirnter without difficulty in Linux Mint 19. Have installed Edge, then Intune following the Microsoft guide however I cannot Apr 30, 2017 · Authentication required. Are you sure you are entering correct password? May 7, 2019 · Hi, I am very much an inexperienced and I am having difficulty get my Ricoh Aificio SG-3100 SNw to print on Linux Mint 19. Important note: All of these problems I recently changed my user acct name and everything seems to be fine except for any sort of higher-level procedure (e. When I join Linuxmint-help and -chat, I can identify but no one sees my chat; it's somewhat gray. I have tried 3 passwords which I use but I have only used the shortest one in Mint. The authenticity check confirms that the ISO image you downloaded was signed by Linux Mint, and thus that it isn’t a modified or malicious copy made by somebody else. The task is to open the grub. Quick to answer questions about finding your way around Linux Mint as a new user. At least that was easy to fix. 1 but when I send print jobs to the printer I get the desktop notifications that the print job has commenced and then completed. 4. Sep 21, 2019 · [SOLVED] Authentication Unsuccessful After Logging In by lalaithan » Sat Sep 21, 2019 9:36 pm Aug 23, 2021 · Quick to answer questions about finding your way around Linux Mint as a new user. here is a snippet from the SSSD logs: (Wed Feb 20 15:07:35 2019) [sssd[be[ 'Connection failed - Authentication to the connection failed' on top right. Apr 23, 2024 · Linuxサーバーでのログイン失敗やsudoエラーに対する効果的なトラブルシューティング方法を解説。ユーザー権限の確認、設定ファイルの見直し、典型的なエラーメッセージの対処法について詳しく説明します。 Mar 26, 2025 · XRDP authentication issue/polkit by MartinP » Wed Mar 26, 2025 1:51 pm My issue could be related to Strange extra authentication need after suspend/resume?. Coincidentally, the computers are connected for file sharing with Samba; they, in turn, are connected to two other computers, also using Samba. Feb 15, 2019 · "Authentication failed" connecting to v6. Nov 2, 2021 · I just installed LNX Mint Cinnamon 20. Re: Authentication failure! (Mint 18. Nov 30, 2023 · Hello,Having issues Logging into Microsoft Intune on a Ubuntu 22. Apr 30, 2017 · The login keyring in Linux did not get unlocked when you logged in. The fingerprint reader itself functions fine. Another day of problem-solving, so we'll see how it goes. Your help highly appreciated. May 6, 2011 · I'm using rhel 5, when i'm working in terminal first i typed su command and by mistake i entered copy command and some other characters, after realising i've made a mistake then i came out and cont Those on Linux Mint can connect with the GUI, but cannot login using the CLI app (Auth Failed error) System logs weren't incredibly informative to say what was going on beyond showing an auth-fail and an auth-out-of-band message. All seems fine: - I can authenticate the access to the domain, - I can see all the printers there. 3? is there some cunning way to do this bearing in mind that everything seems to be in a state of denial of existence? Re: Authentication failure! (Mint 18. 1] OpenVPN failure with strange behaviorS by Charlymint » Wed Mar 22, 2023 3:37 pm Hello all I just upgraded my workstation from Mint 20. Just starting out and have a question? If it is not in the man pages or the how-to's this is the place! Nov 3, 2021 · I just installed LNX Mint Cinnamon 20. How is it possible that I cannot log in as root by su root or su (I get incorrect password error), but I can log in by ssh root@localhost or ssh root@my_local_IP with the same password? I'm using Feb 24, 2021 · Failed to set wall message, ignoring: Interactive authentication required. Failed to call ScheduleShutdown in logind, proceeding with immediate shutdown: Interactive authentication required. Feb 10, 2022 · I don't know mint myself, but the grub. Anyone come across this problem Authentication failure by Murdock » Wed Feb 02, 2011 7:38 pm Here's a bit of insanity for today. For the client, run ssh -vvv username@host On the server end, check the logs. 3? is there some cunning way to do this bearing in mind that everything seems to be in a state of denial of existence? Authentication failure by Murdock » Wed Feb 02, 2011 7:38 pm Here's a bit of insanity for today. Jan 16, 2021 · I am facing an issue with XRDP where in the session immediately terminates after entering the correct username password. These problems can stem from incorrect permissions, misconfigured policies, outdated software, or corrupted authentication mechanisms. When I set up my autostart applications I accidently unchecked "PolicyKit Authentication Agent". Jul 21, 2021 · Its a newbie question and I'm a Newbie ( to linux ). Topics in this forum are automatically closed 6 months after creation. For example in Debian 10 I open terminal and type 'su', then press Enter, then my password and authentication succeeds. I just installed LNX Mint Cinnamon 20. Jan 1, 2019 · I have tried going to root in recovery mode in linux mint debian and it seems to work perfectly. Master sudo authentication troubleshooting techniques in Cybersecurity, resolve access issues, and enhance system security with expert-level diagnostic strategies. BUT in Parrot Security OS when I open terminal and write 'su' and press Enter, then i have authentication failure. Mar 11, 2019 · sudo: account validation failure, is your account locked? I googled around a bit and found a few possible causes of this issue, but none of the solutions I found seemed to fix my problem. After disconnecting it did not connect again. - Logging in terminal instead of X, doesn't work. Oct 16, 2025 · Questions about other topics - please check if your question fits better in another category before posting here Mar 23, 2009 · su: Authentication failure Forum rules Before you post read how to get help. I am on grub 2. Sep 15, 2020 · Although printing on Linux has seen a major improvement (in parallel of the Linux Desktop) in the past 10 years, there are still some issues - and it doesn't even have to be the printer's fault. however it is failing. cfg file with a text editor and change all the "set timeout=0" statements to "set timeout=10". Installed, rebooted into LMDE and went to set the network settings. 3? is there some cunning way to do this bearing in mind that everything seems to be in a state of denial of existence? Jul 21, 2021 · Its a newbie question and I'm a Newbie ( to linux ). Just when I try to login with the credentials of my Linux machine I get the error: “Authentication failed, please try Mar 6, 2021 · Quick to answer questions about finding your way around Linux Mint as a new user. We indicate this with the # prompt. Dec 24, 2024 · - Wi-Fi Network Authentication Required Authentication required by Wi-Fi network Passwords or encryption keys are required to access the Wi-Fi network "network name" - I can connect using Ethernet cable but not wireless. 3. 2 for the first time and only after the hardware driver update and allowing Linux to set its security snapshots - I decided to add a feature to notice it does not recognize my password. - Retrying multiple times, doesn't work. Jan 22, 2024 · 4. log will give you a pretty good idea about what happens when you try to login, look for messages that contain sshd. Apr 25, 2025 · Also experiencing this issue on a fresh Linux Mint install. but when I get into my user profile in the terminal and try to go up to root with sudo or su, it keeps saying incorrect password, try again/authentication failure. 3? is there some cunning way to do this bearing in mind that everything seems to be in a state of denial of existence? I hope this is in the correct forum. but when i tried to play netflix the video was edgy. /var/log/auth. For long and complicated questions use the other forums in the support I tried to su to root so I could install lights, but I get an authentication error when I try: user@host:~$ su Password: su: Authentication failure Jan 1, 2019 · Re: Authentication Failure by cecar » Tue Dec 28, 2010 10:43 pm Authentication Failure means you are entering wrong password. Jan 8, 2020 · I was trying to install the Gimp Plugin respository in Software Manager and of course it asked me to authenticate with my password. Jan 19, 2023 · Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Authentication Failure by gnu-stu » Tue Dec 28, 2010 10:03 pm Hi All, I've installed LMDE from the live DVD onto my lenovo (IBM) ThinkPad R60 four times now and each time I attempt to log into my new installation I get an "Authentication Failure" message and fail to login. Hoping the disabling of flat-pack updates in Update Manager works. * Includes step-by-step instructions and screenshots. May 16, 2021 · At present I have two computers running remote desktop application NoMachine. Jan 15, 2020 · 1 Im not sure if authentication failure because of additional characters after mouse-click. 3 on a (Samba) shared printer on a print server (which requires authentication), stopped working. Anyone come across this problem Apr 9, 2023 · I type su and then my password but get "authentication failure" I don't know how to find what the admin password is. # su limited su: Authentication failure # su -s /bin/bash limited su: Authenti 39 It is likely that you did not set the username/password correctly. Not only does fprintd successfully enroll the finger, but under Linux Mint 19, it worked absolutely fine for login and sudo prompts using fingerprint-gui. I used the same user/password names. I have not knowingly changed my password since Mint was installed recently. com" by rdh61 » Sat Mar 11, 2023 6:19 pm Nov 3, 2015 · I can't switch normal user to root and I get following error: [user2@server1 ~]$ su - Password: su: Authentication failure I know for a fact that password is correct. 6 on Ubuntu 18. I don't recall creating one upon install but I could be wrong. The live DVD seems to be working fine. I just installed LMDE on SDA4 of Wifeys machine, along side Julia. 2 LTS I just installed LNX Mint Cinnamon 20. Anyone have any ideas on how to either get back to password authentication, or ideally, get the fingerprint reader working properly? Apr 21, 2020 · Somewhat like in How to suppress su authentication failure warning?, but it actually does not run the command at all. I'm running Mint 20 and an AMD based system and everything is working quite smoothly except when I try to get root in the terminal. Aug 21, 2021 · Quick to answer questions about finding your way around Linux Mint as a new user. But it keeps telling me authentication token manipulation error. 3 to 21. I have seen so many occurences of the issue on the forum but none of the sol Chsh: pam: authentication failure * Learn what causes the chsh: pam: authentication failure error and how to fix it. Also permissions on my su Authentication Failure by gnu-stu » Tue Dec 28, 2010 10:03 pm Hi All, I've installed LMDE from the live DVD onto my lenovo (IBM) ThinkPad R60 four times now and each time I attempt to log into my new installation I get an "Authentication Failure" message and fail to login. All my password attempts now fail. There are a variety of reasons why authentication could be Re: Katya live: Authentication failure by seeley » Sun May 29, 2011 5:09 pm Hi! Of course - no success. Feb 11, 2023 · When I try to log in on my main user account, it claims the password is wrong. Feb 26, 2025 · Quick to answer questions about finding your way around Linux Mint as a new user. Everything went smoothly at first sight. Please let know how I can fix this. Freenode will give a few Aug 27, 2021 · It's already Friday, and I'm delighted 😉 to see you here. Basically when I input sudo pam-auth-update, the following options appear: 'Connection failed - Authentication to the connection failed' on top right. However if you think your question is a bit stupid, then this is the right place for you to post it. Just when I try to login with the credentials of my Linux machine I get the error: “Authentication failed, please try Apr 17, 2015 · A newcomer in Linux Mint with previous experience only in Debian and opensuse, I am habituated to work with su and not sudo; so I have set a password Re: Katya live: Authentication failure by seeley » Sun May 29, 2011 5:09 pm Hi! Of course - no success. qjcwvkig hsuty jmum dsnyph uxta vvcysio guyj apfoqcel miv fimqy uikkpal pzz ltidj nozrdey chcuewy