Uncomment the lines by removing the “#” in front of each line. However I decided I would like to have a greeter. I'm new to the community. $ sudo /etc/init.d/lightdm stop Hi guys, I need your help. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Ubuntu LightDM fails to start session unless user selects a session. I'm guessing I need to make changes to my /etc/vnc/xstartup.custom file to somehow get X to detect LightDM? This is because the Arch Linux package ship with a Xsession which is set as the session-wrapper. If you don't install a greeter, it won't work. Q&A for Work. In the package's current config file, this line does not exist. Then start with fluxbox. sudo apt-get install lightdm (this will install it again). This will launch the system in text-only mode. [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 wish to configure your login environment, you must use the configuration files for whichever type of X session your system is configured to use. Xsession: unable to start X session --- no .xsession file, no .Xsession file, no session managers, no window managers, and no terminal emulators found; aborting. Open a terminal and type: sudo nano / etc / lightdm / lightdm.conf. Additional info: * package version(s): lightdm 1:1.18.3-1 * config and/or log files etc. Post by MaR1oC » Fri May 20, 2011 6:55 pm. The same error can happen on lightdm startup if the last used session is not available anymore (eg. sudo apt purge lightdm sudo apt install pantheon-xsession-settings cd sudo rm -rf .Xauthority sudo nano /etc/gdm3/custom.conf Change: lightdm-slick-greeter; lightdm-webkit2-greeter 4) Tried using sudo apt-get remove lightdm, and after I reinstalled it, lightdm wouldn't start at all (blank screen, flashing cursor). 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. Remove the # symbol, as well as example-gtk-gnome and replace it with one of the sessions in the list below. As you can see, lightdm starts up the X server normally after kvetching about plymouth. For Debian based systems, install LightDM by typing sudo apt install lightdm For Arch based systems, install LightDM by typing sudo pacman -S lightdm. 1. Try to login. Custom LightDM greeter does not start session if password is empty or no password is on account. In this quick post, we shall see how to fix failed to start session issue in Ubuntu 16.04 and earlier versions. sudo apt-get autoremove (this will autoremove leftovers). My country's mint forum administrators have forbidden new members. 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 !!! 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). : 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… As Fabio Rosciano has the line > greeter-session=lightdm-greeter in his config, too, this is … 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 … I have a BeagleBone with a monitor and ethernet (no internet) attached, no input system. 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 For disabling SDDM (KDE Systems) type sudo systemctl disable sddm 3. It's running Debian 7.5 with lightdm. Activating LightDM on startup. 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 … you last used gnome and then removed the gnome-session package): the easiest workaround is to temporarily restore the removed package. 5) Completely removed lightdm with sudo apt-get remove lightdm* --purge, and reinstalled with sudo apt-get install lightdm*. 2. This seems to be fixed, now that `systemd v245.3-2` is available. With LightDM, you also will need to install and configure a greeter. Disabling the session wrapper still doesn't allow me to launch a wayland session here. Open lightdm.conf in the Nano text editor. 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). If you will ask Google how to remove lightdm in Elementary OS Hera or Juno, you will find the answer. Fix failed to start session in Ubuntu. Change the autologin-user field to … 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”). sudo systemctl restart lightdm.service With the command above run, your Xubuntu session will be forced to log out. Note: If you see only the wallpaper, no Unity, launcher and dash after login, try this Ubuntu login failed fix. Here’s how to fix “failed to start session” at login in Ubuntu Systems: sudo nano /etc/lightdm/lightdm.conf. Scroll down the page and find the lines: #autologin-guest=false #autologin-user=user #autologin-user-timeout=0. Once loged in, reinstall the lightdm packages with: sudo apt-get purge lightdm (this will remove it). Check if you can boot into recovery mode (selecteable in grub menu). 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. Its current contents seems centered around GDM: 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. 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 … Installing LightDM. Not all window manager work this way. Besides the Elementary OS is Ubuntu/Debian based so solutions from these distros should work, but not always. Before you can enable the lightdm service you will need to disable your current display manager. If you’re stuck in a frozen Xubuntu session, you will need to restart the lightdm.service file using the systemctl restart command below. Failed start to start session in Login - Ubuntu 16.04, Ubuntu 15.04, Ubuntu 14.04 or Ubuntu 14.10. I went into /usr/share/xsessions and found a file called lightdm-xsession.desktop. Now I have the lightdm login window again, behaving exactly as before. Failed start to start session in Login – Ubuntu 15.04, Ubuntu 14.04 or Ubuntu 14.10. 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. By default, this will be the Debian Xsession. Stopping X display manager lightdm [ OK ] $ sudo /etc/init.d/lightdm start. Once you've authenticated with your username and password, LightDM will run an X session. 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. [+0.00s] DEBUG: Starting Light Display … Now I need to reliably start a Java Swing program on boot / after the automatic login. Teams. LightDM itself has no user configuration. It … Everything runs on root (not my choice). 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. Starting X display manager lightdm [+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log. I then edited lightdm-xsession.desktop, and found a command "exec". -- Logs begin at Wed 2016-12-07 18:33:55 UTC, end at Mon 2016-12-19 06:42:08 UTC. 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. It's a red herring. 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". … The reason here is that somehow your Unity desktop has been messed up. LXDE Session Can't Start!!! 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). 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