Questions tagged [display-manager]

A system's display manager (DM) is a graphical login manager. It is the program that starts the X server and user sessions, presenting the user with a graphical login screen (greeter). As of 11.10, the default display manager is LightDM; previously, GNOME Display Manager (GDM) was used.

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Wayland in Ubuntu 20.04 (IntelGPU)

I sadly do not have the choice of starting a Gnome with Wayland session when logging in (no gear icon showing). Using a Thinkpad with integrated Intel GPU, WaylandEnable option in /etc/gdm3/custom....
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EXPORT DISPLAY UBUNTU 18.04 gdm3

Wanted to export the display from an application to my local workstation. Simple right? Not overly complex. Well, until you go down rabbit hole of gdm3. After what I believed where correct ...
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“Settings” option not appearing. After upgrading Ubuntu 20.04 LTS from 18.04 LTS

I upgraded my Ubuntu version to 20.04, Focal Fossa, by using the Ubuntu "Software & Update" feature. After completing upgrading it looks fine. But when I need to change display settings, right-...
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Reinstall a display manager [duplicate]

I've just been installing DDE on ubuntu and I accidentally chose lightdm over gdm3. What do I do?
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Installed LXQT but my display manager is shown gdm3 and Desktop Environment as GNOME

I installed ubuntu 20.04 on Raspberry pi 4. Updated and upgraded. Then ran the command "$ sudo apt-get install lxqt". After reboot I was on login screen, I could login. And when I checked desktop ...
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Pop-up window not fully visible

I am unable to view full popup window while opening the security option in Acrobat preference section. Attached screenshot for reference. How can I fix this My screen resolution is 3840*2160
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18.04 only booted into terminal, so I reinstalled gdm3 and now everything is weird [duplicate]

Yeah.... Ubuntu 18.04, it was fully updated earlier today. So, heres how it went, everything was fine, I shut down my PC as normal, a couple hours later, I turned my PC back on and for some reason ...
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Monitor software for display

Ubuntu, Have anyone remember to use for display settings a software named "Monitor"? I used it to set the position (left-right, top-bottom) of the extended display.
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Will changing my display manager fix my resolution problem

I have been running my Ubuntu 18.04 without problems until I switched my monitor then I realized that the system does not detect my new monitor. Even switching back to the previous monitor and ...
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Alternative Display Manager for easy login

I use currently Ubuntu with 2 Display Managers: GRUB and i3. Currently, in order to change the manager I log out and have to press a very small icon in lightdm to switch between GRUB and i3. I wanted ...
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Always loopback into loginscreen: How do I fix it? (Ubuntu 18.04, gdm3)

Installed a fresh 18.04 on a Lenovo T440. After 2 days, Ubuntu presents me a loopback into login screen every time I try to login. ALT + STRG + F2 brings me into console, where I can proceed with ...
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Started GNOME Display Manager.ss finishes up .. pulseaudio.changes.pp link was shut down

I've updated from 16.04 to 18.04. However, after gets stuck on gnome boot screen and then this warning appears on the black screen. How can I solve it?
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Laptop external monitor

Hoping somebody can help I have a dell G5 5587 laptop running Hera, I have connected to external monitor via HDMI cable. when the laptops lid is closed I can work on the external. when the laptop ...
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Ubuntu 18.04.3 LTS tty1/tty2 incorrect login

Hello I used to have Ubuntu 16 and I tried updating to Ubuntu 18.04.3 but the screen is freezed. When I try CTRL alt F1 /f2 /f3 and try typing my login and password .. it says it is incorrect ! Is ...
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Login screen takes a long time to open after suspend

After upgrading to Ubuntu 19.10, it takes about a minute for the login screen to appear after closing and reopening my laptop lid or activating suspend directly. I have tried changing display ...
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Ubuntu 19.10 Multi-desktop out of focus app pauses?

I run multiple displays and have noticed since going from 18.04 to Ubuntu 19.1 applications pause when I enter a full screen game ie) my web-browsers / GUI's running on my other screens seem so lag ...
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Debug desktop environment run

I've installed a Pantheon desktop environment (the one from elementaryOS) over Ubuntu 18.04 and now I have an issue staring this DE from lightdm. Particularly when I'm choosing Pantheon DE from ...
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Power Off not working in Ubuntu 19.10

I just upgraded from 19.04 to 19.10. On the session manager login screen, the 'Power Off' and 'Restart' options seem to have no effect. When I'm logged in as a user, the 'Power Off' command works. ...
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Ubuntu starts in terminal mode

I recently installed KDE plasma in Ubuntu but then uninstalled along with all its packages using code sudo apt autoremove. Now when I start Ubuntu, it opens in terminal mode instead of regular ...
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changing kde plasma display manager setting from sddm to gdm3

i have ubuntu 18.04 . I installed kde plasma desktop environment. while installing it asked for my default display manager, I choose sddm. Now i have changed my default display manager to gdm3.How ...
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How do I launch a graphical application like Firefox or Google Chrome from ssh?

I have tried ssh -X username@ipaddress, but it opens the graphical application on my remote machine rather than the server.
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Using terminal for login( i am mentioning about the gnome-terminal and not that tty console)

I am new to Ubuntu. When I boot the system I want it to run the GUI and show the GNOME terminal (I don't want to see the tty console as well as the login screen of GDM or KDM). I have been searching ...
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Multiple screens in the same display pre/post installing

I'm having struggles to install ubuntu on a Samsung All-In-One Series 3 DP300A2A. The problem is weird, I have multiple screens displayed in the monitor, around 3 are shown completely and other 3 are ...
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Blank display after waking up, using external monitor as primary on a HP laptop

I'm running No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux 10 (buster) Release: 10 Codename: buster with XFCE. My computer specification is : 00:00.0 ...
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Split a screen to 3 columns

How to split a screen to 3 columns on Ubuntu 18.04. Default is splitting to two columns but i want to use three columns on the wide screen monitor.
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Desktop unresponsive after Disco Dingo Upgrade

I am experiencing some weird and very annoying UI issues after the Disco Dingo upgrade. I have a NVIDIA Graphics Card. My issues include no feedback from mouse clicks (however I can still see cursor ...
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Gdm3 not properly setting HOME variable

I am stuck in a login loop and I think part of the problem may be that the HOME variable is being set to /usr/local/gradle which does not exist. lab /usr/lib/gdm3/gdm-x-session[9145]: dbus-update-...
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Ubuntu 19.04 display hanging - is it hardware?

I've had a look around but can't find any answers. Long time user but still a noob in terms of understanding how it works! My system keeps locking up a seemingly random amount of time and load after ...
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Ubuntu 18.04 without display manager

How to start Ubuntu 18.04 without a Display Manager? What to put in .xinitrc to launch Ubuntu from TTY using startx? .xinitrc ... # What to exec here? exec <ubuntu_session_thingy> The ...
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763 views

systemd: how to setup desktop environment without display manager?

I'd like to completely avoid DM phase and run straight into desktop environment. Is there any systemd service for that? All that is needed is to correctly restart Xorg when it is killed by Ctrl + Alt ...
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Change lock screen to gdm in kubuntu (kde)

I have installed gdm3 on Kubuntu and changed the default display manager from sddm to gdm3, and the login screen works fine, it looks just like Ubuntu. but the lock screen (when you press ctrl+alt+L) ...
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Washed out primary screen colors Ubuntu 19.04

I recently dual booted my MSI GP63, and installed ubuntu 19.04, but my laptop screen looks little washed out even after installing nvidia drivers version: 418, But when i connect to secondary ...
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Having gnome and bspwm running concurrently

I just installed ubuntu 18.04 and wanted to try out bspwm window manager. I followed this tutorial doing the "with display manager" path. At the end of this, it tells you to restart your current ...
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18.04 flashes black screen and lock screen several times during login

This is an annoyance, but I thought I should post about it and see if anyone knows the solution. I found: GDM3 does not start in Ubuntu 18.04 But my situation is different as the laptop DOES ...
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Ubuntu 19.04 on Dell Precision T3400 stops booting at “starting GNOME Display Manager”

I installed 19.04 but when it restarts off the hard drive it gets to starting GNOME Display Manager and doesn't go any farther. I have 2 compuers both Dell Precision T3400, one with a dual VGA ...
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What are the minimum requirements to program a Display manager?

I want to program a display manager or my own login program. So that Ubuntu boots up and then comes for example a program that says hello(instead of a Display Manager) and that after the program is ...
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Changing display server in Ubuntu 18.04

I'm using Ubuntu 18.04 LTS on Linux kernel 4.15.0. I've learned that casting the entire screen can't yet be done with Wayland. Is there any workaround for this, or should I change my display server ...
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Not able to start Display Manager after cloned disk (clonezilla)

I recently got a 1TB SSD which I was planning to copy all content from my 128 GB disk with Clonezilla. When the cloning was done, I restarted without plugging out the old (128GB) disk (I'm not sure ...
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How can I split a vertical monitor into up and down?

I have two monitors. One is horizontal and one is vertical. I like to split my vertical monitor into up and down, so that I can have two windows on it, one on the upper part and one on the lower part. ...
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How do I switch back to LightDM from GDM3 in Ubuntu Mate 18.10

So while trying to solve Logitech TouchPad T650 intermittent freezing issue, I installed Solaar ( https://pwr.github.io/Solaar/ ) via Synaptic. During the installation, it asked me to select between ...
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Ubuntu 18.04.2 LTS live - 2 Displays

I booted an Ubuntu live OS and wonder why my second Monitor shows up in the settings. I installed windows 10 on my harddrive which shows 2 Displays, too. The second one, an Acer V223W isn't even ...
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Set Display Settings in Ubuntu 18.04 from Command Line

I have several different places that I use my laptop, each with a different combination of monitors or projectors. I can set it up just fine using the Displays setting UI ($ gnome-control-center ...
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Create a live usb Ubuntu to run an application without desktop environment

I need to create a USB live ubuntu to run an application. I want to open my application after the boot as fullscreen without any other option to the end user. I read that I should use Gtk+ or Qt5 if ...
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Reconfigure the display-manager non-interactively

I am trying to change the default display-manager on a Ubuntu 18.04.1 in a non-interactive way to do this in a script. Everything works as expected when using dpkg-reconfigure gdm3 dpkg-...
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Can't start GUI programs via command line due to wrong DISPLAY variable

I am using Ubuntu 18.10 and I cannot launch GUI programs via the command line. This applies to subl (for Sublime Text) and Firefox. When trying to start Firefox via CLI; it prints: Invalid MIT-MAGIC-...
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failed to start Light Display Manager

I am very new to Ubuntu. I am getting failed to start Light Display Manager error when I start Ubuntu. I am not getting login page. It might be possible that I have deleted Lightdm package. Can I ...
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Can we have a transparent HUD like image/information layer on display?

Sometimes I adore the HUD information or to have a favorite image picture on the front of the display layer (always on top and un-clickable). That would look like this and help our operation or just ...
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Unable to login after Ubuntu 18.04 fresh install

I downloaded the Ubuntu 18.04 .iso file and installed it. When booting the first time it asked me for my password, but when I entered the password at the login screen it rejected it three times and ...
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How to get displayed text location (in terms of pixels) on my screen?

I am trying to figure out if it is possible to read different words displayed on computer screen. For example in home folder (in GUI mode), we have Downloads, Documents etc. To display these words, ...
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GDM freezes when logging out in 18.04

I have recently done a clean install of Ubuntu 18.04. I have noticed that if I choose the 'Log Out' option, after logging out of the session, the GDM screen does appear, but there is no cursor, and I ...

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