The reason here is that somehow your Unity desktop has been messed up. Uncomment the lines by removing the “#” in front of each line. Change the autologin-user field to … Once loged in, reinstall the lightdm packages with: sudo apt-get purge lightdm (this will remove it). : attached Steps to reproduce: Install lightdm and lightdm greeter (xorg-server, xf86-video-*, and xorg-server-xwayland is needed) Install weston and sway Enable lightdm… LXDE Session Can't Start!!! [sudo] password for ubuntu: thanks for that, had been stopping with a different syntax which does not start or restart…, Powered by Discourse, best viewed with JavaScript enabled, Stopping X display manager lightdm [ OK ], Starting X display manager lightdm [+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log. If you don't install a greeter, it won't work. It's a red herring. This must be an issue with lightdm or XFCE because I didn't have this issue running SolusOS which uses gdm and Gnome (I think). Teams. 2. The session-wrapper should be more generic or at least a similar one should be written for wayland. LightDM can be installed with: pamac install lightdm To enable LightDM as the default display manager use: sudo systemctl enable lightdm.service --force Installing a Greeter. Simply changing this "exec" from "default" to "startxfce4" meant that when I have "Default XSession" selected at the login screen, it starts xfce4 instead of "default". By default, this will be the Debian Xsession. I'm new to the community. Tested and worked are: Fluxbox, openbox; xfwm4 - WM for xfce - works but haven't figured out any app launcher to use; xfce4 - works, pretty, seem to run pretty smoothly (first session might be slow) Those don't … Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. sudo apt purge lightdm sudo apt install pantheon-xsession-settings cd sudo rm -rf .Xauthority sudo nano /etc/gdm3/custom.conf Change: Everything runs on root (not my choice). Once you've authenticated with your username and password, LightDM will run an X session. Scroll down the page and find the lines: #autologin-guest=false #autologin-user=user #autologin-user-timeout=0. Then start with fluxbox. Check if you can boot into recovery mode (selecteable in grub menu). Open lightdm.conf in the Nano text editor. If you wish to configure your login environment, you must use the configuration files for whichever type of X session your system is configured to use. Note: If you see only the wallpaper, no Unity, launcher and dash after login, try this Ubuntu login failed fix. 3 years ago You can, but the feature set will be degraded.. GDM is a system daemon that creates the session for your user, as well as handling the authentication; it delegates the UI to a “greeter”, which, by default, is just a locked down profile of GNOME Shell (that’s why GDM and GNOME are “bound”). Not all window manager work this way. sudo nano /etc/lightdm/lightdm.conf. To start the service and set it to start on boot, run: # systemctl start lightdm.service && systemctl enable lightdm.service There is a simple command line tool called dm-tool for some which can be used to lock the current seat, switch sessions, etc. … Post by MaR1oC » Fri May 20, 2011 6:55 pm. DEBUG: Seat seat0: Starting DEBUG: Seat seat0: Creating greeter session DEBUG: Seat seat0: Failed to find session configuration lightdm-webkit2-greeter DEBUG: Seat seat0: Failed to create greeter session DEBUG: Failed to start seat my lightdm.conf has the following entry: greeter-session = lightdm … This seems to be fixed, now that `systemd v245.3-2` is available. Failed start to start session in Login - Ubuntu 16.04, Ubuntu 15.04, Ubuntu 14.04 or Ubuntu 14.10. 3. Now I have the lightdm login window again, behaving exactly as before. For Debian based systems, install LightDM by typing sudo apt install lightdm For Arch based systems, install LightDM by typing sudo pacman -S lightdm. If you’re stuck in a frozen Xubuntu session, you will need to restart the lightdm.service file using the systemctl restart command below. 5) Completely removed lightdm with sudo apt-get remove lightdm* --purge, and reinstalled with sudo apt-get install lightdm*. Besides the Elementary OS is Ubuntu/Debian based so solutions from these distros should work, but not always. As Fabio Rosciano has the line > greeter-session=lightdm-greeter in his config, too, this is … sudo apt-get install lightdm (this will install it again). sudo systemctl restart lightdm.service With the command above run, your Xubuntu session will be forced to log out. Activating LightDM on startup. you last used gnome and then removed the gnome-session package): the easiest workaround is to temporarily restore the removed package. Starting X display manager lightdm [+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log. Installing LightDM. The problematic line in my setup is > greeter-session=lightdm-kde-greeter If it is active, lightdm fails to start, if it is commented, lightdm works. Greeters my show the list of possible user accounts.If you want to disable this (you have too many users or security concerns) use the following configuration.You may also want to explicitly enable manual login with this feature. With LightDM, you also will need to install and configure a greeter. Ubuntu LightDM fails to start session unless user selects a session. My country's mint forum administrators have forbidden new members. It … 4) Tried using sudo apt-get remove lightdm, and after I reinstalled it, lightdm wouldn't start at all (blank screen, flashing cursor). Its current contents seems centered around GDM: Additional info: * package version(s): lightdm 1:1.18.3-1 * config and/or log files etc. Wayland session other than weston can't be started [1]. Press the Ctrl + W keyboard combination, type “#greeter-session=example-gtk-gnome” in and press Enter. Q&A for Work. In this quick post, we shall see how to fix failed to start session issue in Ubuntu 16.04 and earlier versions. Hi guys, I need your help. lightdm-slick-greeter; lightdm-webkit2-greeter [+0.00s] DEBUG: Starting Light Display … $ sudo /etc/init.d/lightdm stop I've got a script running at the lightdm greeter and the lightdm session so I have synergy at the login screen and right after logging in. 1. I'm guessing I need to make changes to my /etc/vnc/xstartup.custom file to somehow get X to detect LightDM? I then edited lightdm-xsession.desktop, and found a command "exec". This is because the Arch Linux package ship with a Xsession which is set as the session-wrapper. I was able to launch sway using lightdm (using the shipped "/etc/lightdm/Xsession"), but since systemd was updated to v245 sway doesn't start anymore. LightDM itself has no user configuration. It looks like your X server is working fine, but either your login manager or your desktop environment are failing to run properly (the former is supposed to ask for a password, then start the latter for you). Xsession: unable to start X session --- no .xsession file, no .Xsession file, no session managers, no window managers, and no terminal emulators found; aborting. I went into /usr/share/xsessions and found a file called lightdm-xsession.desktop. Fix failed to start session in Ubuntu. For disabling SDDM (KDE Systems) type sudo systemctl disable sddm Stopping X display manager lightdm [ OK ] $ sudo /etc/init.d/lightdm start. Custom LightDM greeter does not start session if password is empty or no password is on account. Here's how to fix "failed to start session" at login in Ubuntu Systems: I have installed Ubuntu 16.04 LTS in one of my friends Laptop and installed/removed … Now I need to reliably start a Java Swing program on boot / after the automatic login. In the package's current config file, this line does not exist. Try to login. I have a BeagleBone with a monitor and ethernet (no internet) attached, no input system. In the first boots it could normally login to the lxde-session but now it can't It asks me for my username and password, I type them and then AGAIN !!! Here’s how to fix “failed to start session” at login in Ubuntu Systems: Open a terminal and type: sudo nano / etc / lightdm / lightdm.conf. Remove the # symbol, as well as example-gtk-gnome and replace it with one of the sessions in the list below. So lightdm (which apparently expects plymouth to be running) complains that it can't find it, but that isn't the cause of your problems. However I decided I would like to have a greeter. sudo apt-get autoremove (this will autoremove leftovers). LightDM is not behaving as it should ... on any new install it does not recognize FluxBox as the Default Session and spins in a loop until you select FluxBox from the LightDM menu Yada yada yada... From what I have researched it seems as if Xsession wrapper is the main control and .xsessionrc is the end goal to make anything see FluxBox as the Default Session If you will ask Google how to remove lightdm in Elementary OS Hera or Juno, you will find the answer. Before you can enable the lightdm service you will need to disable your current display manager. The same error can happen on lightdm startup if the last used session is not available anymore (eg. -- Logs begin at Wed 2016-12-07 18:33:55 UTC, end at Mon 2016-12-19 06:42:08 UTC. It's running Debian 7.5 with lightdm. Disabling the session wrapper still doesn't allow me to launch a wayland session here. This will launch the system in text-only mode. This revert is now included: https://wiki.archlinux.org/index.php/Reporting_Bug_Guidelines, https://bbs.archlinux.org/viewtopic.php?id=210653, https://github.com/systemd/systemd/pull/13277, https://bugs.launchpad.net/lightdm/+bug/1664097, https://github.com/canonical/lightdm/issues/126, FS#50611 - [lightdm] Cannot start wayland session (sway). Failed start to start session in Login – Ubuntu 15.04, Ubuntu 14.04 or Ubuntu 14.10. As you can see, lightdm starts up the X server normally after kvetching about plymouth. I've been running nixos with xmonad and using startx to start the xserver. Fixed, now that ` systemd v245.3-2 ` is available country 's mint administrators. In his config, too, this will install it again ) the above. Is available version ( s ): the easiest workaround is lightdm can t start session temporarily restore the package... Lightdm / lightdm.conf lightdm can t start session Logs begin at Wed 2016-12-07 18:33:55 UTC, end Mon... 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