Be sure to save anything you’re working on before entering the command! We will review how to setup the execution of command when the display manager popup before any user logged in and how to execute something when someone is finally logged in. Open a terminal with Ctrl+Alt+T if you are on the desktop and not in the recovery console.. I got the packages for KDE Plasma and set SDDM to auto start on boot. sudo systemctl disable lxdm -f. Step 2: Enable LightDM with systemctl enable. sudo systemctl enable lightdm -f. Step 3: Reboot your Arch Linux PC using the systemctl reboot command. net start TermService If the service is already running you will get the message ‘ The requested service has already been started. Any two will suffice. When I start the computer, I end up in the text terminal. However starting SDDM this way and then opening KDE Plasma makes the screen nonresponsive. If you don't know which one you're running, you can refer to this question : x11vnc was working fine in 15.10, but after upgrading it doesn't work on startup Trying to manually run from terminal: $ /usr/bin/x11vnc -auth /var/run/sddm/:0 -forever -loop -noxdamage -repeat - If I disable sddm and start xorg manually from the terminal, xorg starts and works just fine. We can start Terminal Services by running the command given below. To use SDDM, you must first enable it within the systemd login manager, with the “f” switch. SDDM is a modern display manager for X11 and Wayland aiming to be fast, simple and beautiful. I'm wondering if I can get back to the terminal so I can give the user a password. Switch to GDM via the terminal. However, once I started it I realized I couldn't login as root, only as a user, but I only have one user besides root and I never gave it a password (dumb mistake, I know) so now I can't log in. However, I am still able to open another virtual terminal, start SDDM and more importantly, login using my other window manager, i3. Then i use nvidia driver without xorg.conf, after auto-start sddm - i have wrong resolution (1024x768), 1280x1024 - is native. Install it with one of the following terminal commands below. Step 4: Let Arch Linux start back up. Its not necessary to install all of the above mentioned Display Manager. I've got Kali Linux KDE working well, but when I first start linux, it boots into the terminal screen for TTY1 ... kali-linux gui display-manager sddm systemctl. Ubuntu sudo apt install sddm Debian sudo apt-get install sddm Arch Linux sudo pacman -S sddm Fedora sudo dnf install sddm OpenSUSE sudo zypper install sddm. Looking through the systemctl log, the authentication is working well, and sddm starts the startkde script. but if i start sddm by my hand from root's console - resolution and glx work fine. Hello, I have tried to reintall x and kde serveral time but nothing helps. First, we need to identify our default display manager. I renamed my .config folder (where all the plasma rc files reside), and that did not fix the problem. My GPU is a NVidia GeForce GT 730, I installed the package "nvidia" and rebooted, and all I see on the screen is "starting version 246.6-1-arch" and "/dev/sdc2: clean 244093/30007296 files, 4639165/119999238 blocks". But i can start manualy (systemctl start sddm) - in this case sddm start correct. sudo systemctl disable sddm -f. or. I do not have autologin enabled and while SDDM did crash on bootup, I was able to open another virtual terminal and start it. Type sudo apt-get install gdm, and then your password when prompted or run sudo dpkg-reconfigure gdm then sudo service lightdm stop, in case gdm is already installed.. A "Package Configuration" dialog will be displayed; click OK to proceed to the below screen. 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