Linux mint authentication failure 6 on Ubuntu 18. 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. Have installed Edge, then Intune following the Microsoft guide however I cannot Apr 30, 2017 · Authentication required. 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. 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 . 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. I am using Linux Mint 20. 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. Aug 21, 2021 · Authentication failure of root password Forum rules There are no such things as "stupid" questions. - Logging in terminal instead of X, doesn't work. log will give you a pretty good idea about what happens when you try to login, look for messages that contain sshd. Master sudo authentication troubleshooting techniques in Cybersecurity, resolve access issues, and enhance system security with expert-level diagnostic strategies. but when i tried to play netflix the video was edgy. 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. 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. Failed to call ScheduleShutdown in logind, proceeding with immediate shutdown: Interactive authentication required. Stick to easy to-the-point questions that you feel people can answer fast. I am on grub 2. Dec 3, 2022 · I can't reset my password. Sep 8, 2009 · Linux - Newbie This Linux forum is for members that are new to Linux. All seems fine: - I can authenticate the access to the domain, - I can see all the printers there. 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. 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?. 04. I don't recall creating one upon install but I could be wrong. 1 but when I send print jobs to the printer I get the desktop notifications that the print job has commenced and then completed. In this particular situation, printing from Linux Mint 19. 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. cfg file will be somewhere in /boot. I was trying to install the Gimp Plugin respository in Software Manager and of course it asked me to authenticate with my password. cfg file with a text editor and change all the "set timeout=0" statements to "set timeout=10". Audio bluetooth dongle is working fine. Everything went smoothly at first sight. * Includes step-by-step instructions and screenshots. Anyone come across this problem Authentication failure by Murdock » Wed Feb 02, 2011 7:38 pm Here's a bit of insanity for today. 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. 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. 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. I get the root privilege when I type sudo. Quick to answer questions about finding your way around Linux Mint as a new user. Authentication failure by Murdock » Wed Feb 02, 2011 7:38 pm Here's a bit of insanity for today. 1 Cinnamon. 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. 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. Issue su: Authentication failure This issue is encountered when trying to su to root. - Retrying multiple times, doesn't work. This is not due to caps lock or other keyboard problem, as I can log in as root just fine (same password). Jan 22, 2024 · 4. The fingerprint reader itself functions fine. I installed the pirnter without difficulty in Linux Mint 19. I went in to a terminal screen Apr 13, 2019 · Greetings, I'm having an issue after logging into HexChat, especially with Spotchat. These problems can stem from incorrect permissions, misconfigured policies, outdated software, or corrupted authentication mechanisms. Aug 14, 2012 · Authentication failed Forum rules Before you post read how to get help. I just installed LNX Mint Cinnamon 20. However if you think your question is a bit stupid, then this is the right place for you to post it. Nov 3, 2021 · I just installed LNX Mint Cinnamon 20. I have tried 3 passwords which I use but I have only used the shortest one in Mint. Freenode will give a few Aug 27, 2021 · It's already Friday, and I'm delighted 😉 to see you here. 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. Feb 26, 2025 · Quick to answer questions about finding your way around Linux Mint as a new user. But when I try to login to this Linux, I get "Access denied" error. Nov 2, 2021 · I just installed LNX Mint Cinnamon 20. I get a constant populating SASL Authentication failure - it just goes on and on. Basically when I input sudo pam-auth-update, the following options appear: 'Connection failed - Authentication to the connection failed' on top right. 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. Please let know how I can fix this. 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. The live DVD seems to be working fine. 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. When the username/password are incorrect you get the login failed for display 0 message. 1. 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. I can't find anything on the forums about this, although I didn't look toooooo terribly hard. gmail. ' It connected briefly to one wifi on phone. Here's what happened: I Mar 22, 2023 · [Mint 21. 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. Feb 10, 2022 · I don't know mint myself, but the grub. With other servers, I've seemed to make more headway, but I still can't be seen when I chat. Topics in this forum are automatically closed 6 months after creation. Re: Authentication failure! (Mint 18. 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. * Get your chsh command working again today! I just installed LNX Mint Cinnamon 20. Your help highly appreciated. sudo works, but only because I rescued it after chown-ing /usr in a derp moment. . 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. At least that was easy to fix. 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. kinit command works correct (it has no output when I run it). 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. 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 ). 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). however it is failing. Forum rules There are no such things as "stupid" questions. Feb 15, 2019 · "Authentication failed" connecting to v6. May 16, 2021 · At present I have two computers running remote desktop application NoMachine. Damn thing was also a problem with 18. 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. 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. 3 on a (Samba) shared printer on a print server (which requires authentication), stopped working. 04 LTS Box. BUT in Parrot Security OS when I open terminal and write 'su' and press Enter, then i have authentication failure. Aug 21, 2021 · Quick to answer questions about finding your way around Linux Mint as a new user. Jul 21, 2021 · Its a newbie question and I'm a Newbie ( to linux ). 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. Yesterday, it complained about an authentication failure, but unfortunately I did not save the error message. Nov 30, 2023 · Hello,Having issues Logging into Microsoft Intune on a Ubuntu 22. 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. g gdmsetup) requiring authentication fails--dialog box vibrates and disappears, leaving it grayed out. I have not knowingly changed my password since Mint was installed recently. polkit broken? by rattkjelke » Fri Jul 28, 2023 2:33 am I'm an idiot. I used the same user/password names. - 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. 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. 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. chsh Password Prompt and PAM: Authentication failure For this section, let’s assume we work as root directly or via sudo. 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. 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. # 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. Feb 11, 2023 · When I try to log in on my main user account, it claims the password is wrong. /var/log/auth. 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. 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. Another day of problem-solving, so we'll see how it goes. Apr 25, 2025 · Also experiencing this issue on a fresh Linux Mint install. Apr 30, 2017 · The login keyring in Linux did not get unlocked when you logged in. NoMachine (I’m using the free version) shows the Linux machine, so that’s not the problem. 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). 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. 2 LTS I just installed LNX Mint Cinnamon 20. For example in Debian 10 I open terminal and type 'su', then press Enter, then my password and authentication succeeds. 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. Coincidentally, the computers are connected for file sharing with Samba; they, in turn, are connected to two other computers, also using Samba. I just installed LMDE on SDA4 of Wifeys machine, along side Julia. 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. The password is right. Installed, rebooted into LMDE and went to set the network settings. 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. 4. Jul 28, 2023 · Re: Can't run graphical apps as root. 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. 3. 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. I renewed the original launcher/shortcut because the original did the exact same thing. But it keeps telling me authentication token manipulation error. Jan 15, 2020 · 1 Im not sure if authentication failure because of additional characters after mouse-click. 3 to 21. We indicate this with the # prompt. 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. 4. Hoping the disabling of flat-pack updates in Update Manager works. Oct 31, 2021 · I just installed LNX Mint Cinnamon 20. 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. Bet when trying to use my OpenVPN from the network manager, it fails. When I set up my autostart applications I accidently unchecked "PolicyKit Authentication Agent". 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. . Jan 1, 2019 · I have tried going to root in recovery mode in linux mint debian and it seems to work perfectly. 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. May 3, 2019 · I am adding the printer from the windows network via samba. When I join Linuxmint-help and -chat, I can identify but no one sees my chat; it's somewhat gray. For the client, run ssh -vvv username@host On the server end, check the logs. 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. 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. Mar 6, 2012 · You need to run ssh (the client, and possibly the server) with more verbosity to understand why authentication is failing. 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. After disconnecting it did not connect again. The session manager tries to use your username/password to unlock the screen. 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. Jan 16, 2021 · I am facing an issue with XRDP where in the session immediately terminates after entering the correct username password. Oct 6, 2020 · 'Connection failed - Authentication to the connection failed' on top right. I feel like this is a big issue that isn't getting attention especially for new Linux users. Literally brand new to mint and linux in general, installed it about 30 minutes ago. 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. The task is to open the grub. 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. 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. 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. Secure login with USB tokens, and configure two-factor authentication effortlessly. 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. All my password attempts now fail.