Questions tagged [display-manager]

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9 views

XFCE Display manager hangs after applying settings

I often have the problem that display-manager appears to hang the UI thread after playing some settings (like disabling a screen) (see screenshot), and thus i cant click the "Keep settings" ...
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32 views

Run X11 programs and render on cloud machine without a physical screen

I am trying to run a program that uses X11 to display (assume xeyes or something similar) on a machine in the cloud (ec2, Compute Engine, etc). I understand that I can get the windows to show up on my ...
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What's an alternative to XDMCP that uses TCP instead of UDP so it can be tunneled over SSH?

The problem with forwarding XDMCP over SSH is that it uses UDP, not TCP, and UDP cannot be forwarded over SSH, but something tells me TCP can be forwarded over UDP. https://www.google.com/searchq=%...
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36 views

How to configure environment variables per graphical session

Consider the following setup: I have GDM installed I have multiple graphical sessions configured, both X11 and Wayland: i3, sway, gnome(x11). I want to export different sets of environment variables ...
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2answers
71 views

No GUI error after installing debian buster

I have installed Debian 10 on my laptop Dell Inspiron . But when booting first time into Debian, It directs me into the command-line interface, why? I am sure, I have chosen Graphical Install during ...
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Set certain desktop environment as default, and revert back to it after reboot

first of all, let me put a few things out of the way: I'm about to manage a few (semi-)public workstations with Linux Mint 20 that a lot of different people have access to. And you know people; they ...
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1answer
10 views

Timing Desktop Environment Initialization

Is there a way to time desktop environment initialization? And perhaps identify delaying candidates? Thanks in advance
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2answers
104 views

Is Wayland display server a userspace process?

For X11, I can see the display manager gdm3 (indirectly) launches a process named Xorg, which is the display server. However when using gnome on wayland, I do not see any children (or grandchildren) ...
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24 views

Opensuse failed to load x display manager

Running opensuse and recently updated the nvidia driver along with a couple other things. Now I get a failed to start x display manager. Reinstalling the driver doesn't fix it, and I'm unsure how to ...
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203 views

Ubuntu 20.04 Fractional Scaling crashes computer

I am using Ubuntu 20.04 with an nVidia GTX 1650 graphics card. I enable fractional scaling in gnome and set it to 125%. Everything looks fine, scaling is working properly then I restart computer. ...
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57 views

QtCritical: Could not connect to any X display

Installed copyq on Debian 10. When root@engelsmann-vaio:/usr/lib# copyq I get the error message: QtCritical: Could not connect to any X display. (:0, ) root@engelsmann-vaio:/usr/lib# env gives me ...
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How can I edit vnc viewer on linux to stop the infinite desktops that appear after i connect to my windows desktop?

When I connect to my MS-windows desktop that runs ultravnc server using vncviewer from Gnu/Linux (kali), when I authenticate and connect I see too many images or instances of vncviewer. I tried tight ...
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131 views

Ubuntu using LXDE taking too long to shutdown

I have Ubuntu 20.04 and my desktop environment is LXDE. When I try to shutdown my computer the system keeps waiting and there is a message: A stop job is running for Session c2 of user ... (1min 30s) ...
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250 views

Faulty modules in my display manager (?) Linux Mint 19.3

So I wanted to know what display manager is currently used on my newly installed Linux Mint... Surfed communities and found this command: $ systemctl status display-manager I found out that my ...
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2answers
243 views

How do I find out the display manager info on Fedora 32 Mate?

It's my first time to use Linux, Fedora and Mate environment. I want to change the default login screen (mainly the background), but I couldn't find the way to do it. I have done some research, and ...
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1answer
962 views

Sddm is not starting but in theory everything is working!

It wasn't a long time ago when I decided to start an adventure with Linux. I started with a virtual machine (VMware workstation Pro) and everything worked fine. I've picked Debian 10.4.0 distro with ...
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8 views

Removing application from favorites causes logout

This is definitely the weirdest bug I've ever experienced, and I have no idea what could be causing it. Anytime I try to remove an application from the favorites bar, the current account (tested for ...
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1answer
49 views

XDM loops while given correct username and password

I just installed XDM to set up a proper login screen on Archlinux, but it seems I did it wrong. Indeed, XDM starts and prompt a thing I guess is the default login screen, but when I enter my password/...
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26 views

How to know if my computer supports a triple monitor configuration?

I'm currently ruining manjaro KDE and trying to setup three monitors. my laptop has an HDMI output and a VGA one and I would like to use both to setup two additional screens but I seem to be able to ...
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1answer
47 views

Controlling the X display manager service - on SLES 15

I'm not a fan of systemd, and have so far worked with systems which used SysVInit scripts (like Devuan); and upstart on older Ubuntu versions. Now I'm "stuck" with a SLES 15 machine. I'm trying to ...
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25 views

I can't use the window manager of my choice, nor the display manager

I'm stuck with xfce and a text-only login screen. I've tried to run startkde instead of startx to see GUI and I got this $DISPLAY is not set or cannot connect to the X server. I tried to fix it ...
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16 views

Is there a way to autostart a DISPLAY dependent script with Xorg that's Display Manager Agnostic?

The goal here is to run this command when the display manager starts: xrandr --setprovideroutputsource modesetting NVIDIA-0 xrandr --auto Or rather a script containing it upon startup of Xorg. The ...
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24 views

panel is covering windows

I'm currently running Ubuntu 18.04.3 LTS and sometimes the panel covers the bottom of windows where I need to access the buttons on the bottom. I'm trying to do a restore using timeshift because of ...
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2answers
30 views

During boot my ubuntu box switches into graphic mode, but there is no window manager installed. How can I disable this?

Grub gives me two options, boot Ubuntu and boot Ubuntu Rescue Mode (or something alike). When I boot Ubuntu, I get to the point where dmesg gives green timestamps, but just before a login prompt would ...
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89 views

How to get rid of nag screen “Authentication is required to set one's own greeter properties”?

After a recent update on my Linux system I get a dialogue window every few (5?) minutes with the same message: Authentication is required to set one's own greeter properties. It has a password ...
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1answer
86 views

Two WMs simultaneously

I want to use two Windows Managers simultaneously. As I know that using two ttys for this isn't going to work (I'm on Arch and systemd-logind revokes access to hardware when switching), I am searching ...
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1answer
234 views

How can the shadows around windows be removed from Mate with Lightdm?

There is a shadow around each window in Mate. If it matters I run Lightdm. How can the shadows be completely disabled for all windows regardless of the application?
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2answers
3k views

Prevent lightdm from turning off screen when locking session

I am running Xubuntu 18.04. When I lock the session, the screen gets turned off instantly. I am using stock lightdm as display manager and lightlocker for locking the session. From my viewpoint the ...
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247 views

Display managers don't log me into my user account

I have been using Arch Linux for more than 5 years now (and linux for about 10 years). Never had such a problem. Searching the internet also did not reveal any answers to this ---- Here are the ...
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0answers
340 views

Disable all display managers in (systemd based) ubuntu

How can I disable all installed display managers in ubuntu (18.10 or later) without removing them? In my case gdm3 and sddm are installed and I tried: sudo systemctl disable sddm -f sudo systemctl ...
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2answers
712 views

What order does window manager, display manager, login manager execute

I am trying to understand what is the use of Xorg. I got confused with lots of words like window manager display manager login manager etc. After that i got some links in stackexchange Terminology ...
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1answer
208 views

Set DM on OpenRC

How do I set a display manager on an OpenRC system? I'm trying to use the Ly display manager. E.g. on a systemd distro I'd do $ sudo systemctl enable ly.service but how do I do it here?
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1answer
657 views

Is there any terminal tool where you can zoom in and out the screen?

So I know there's zooming tool in universal access menu in Ubuntu, but currently I can't find how to operate it through command line, plus it can't zoom out. My second attempt is use xrandr --output ...
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1answer
173 views

Is there a login / display manager in Linux with a config GUI for setting wallpaper (NOT editing config files by CLI)?

I have looked and not found one. I'm surprised, as something as trivial as this should be configurable via a GUI. Even SDDM for KDE doesn't offer this and KDE is normally super configurable via GUI. ...
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59 views

Is a display manager a client of an X server?

https://en.wikipedia.org/wiki/X_display_manager_(program_type) an X display manager is a graphical login manager which starts a session on an X server from the same or another computer. A login ...
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1answer
986 views

CentOS 7 SDDM can't click GUI with mouse

I ran a fresh Minimal install of Cent OS 7. When finished, I run this command to get the GUI setup: yum -y install epel-release;yum update -y;yum groupinstall "Xfce" -y;yum -y groupinstall X11;echo "...
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336 views

Error in io.elementary.greeter

I am using archlinux. When using io.elementary.greeter with lightdm the screen remained black. You can start the virtual terminal, but it will be returned to the black screen immediately. As I saw ...
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1answer
571 views

What does `lightdm --session-child 12 19` mean?

What does lightdm --session-child 12 19 mean in the following output? Why does lightdm fork a process to execute the above command? I don't find --session-child in lightdm manpage. Thanks. $ pstree ...
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0answers
284 views

Arch linux greeter without DM

I'm using Arch Linux with i3wm with xinit which results in having tty1 as my "greeter". I wanna know if there is any possibility to have a greeter, for instance, Deepin greeter at login prompt ...
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422 views

Kali Linux KDE not showing GUI for initial login [duplicate]

this is my first Linux OS, and I'm trying to get more acquainted with my environment. I've got Kali Linux KDE working well, but when I first start linux, it boots into the terminal screen for TTY1 ...
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1answer
2k views

Cannot change default display manager on Mint 19 Beta

On Linux Mint 18.3, when I used to install mdm, the command sudo apt install mdm would open a prompt such as: and I would choose the default display manager. Running sudo dpkg-reconfigure mdm would ...
4
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1answer
4k views

The difference in Ubuntu 18.04 that requires nomodeset?

My laptop which has an Nvidia GeForce 310M GPU is 9 years old and it has been OK with all Ubuntu releases until now. What is the difference between 18.04 and previous releases that causes the black (...
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0answers
63 views

Display not working for any user except root on tool vnc for Os Suselinux

I was trying to install SAP Hana Data provisioning agent for which SAP Note said that we need a non-root user who should have read/write access to /usr/sap folder and display access. So I started ...
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1answer
770 views

Linux mint 18.3 boot at black screen

After apt upgrade, I have problems with booting into the system. Firstly, I was getting the message that Plymouth was missing and Bluetooth failed to initialize. After installing Plymouth theme I ...
4
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1answer
8k views

Catch-all command to restart display manager?

Is there a catch-all command to restart display managers (on any given common init system)? I've got systemctl restart display-manager for systemd-based systems currently, but I don't know that that'...
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2answers
7k views

What is the correct procedure to replace MDM with LightDM on Linux Mint?

OS: Linux Mint 18.3 Cinnamon 64-bit. I almost got a heart attack, after reboot preceding this; in an important VM: sudo apt-get install lightdm ... I chose LightDM as the default DM ... sudo apt-...
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1answer
991 views

Keyboard doesn't work at graphical login [closed]

After an update, my laptop keyboard doesn't work anymore when I want to login (while the touchpad does). This is true whatever the display manager used (xdm, lightdm). I can't even switch to console ...
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2answers
7k views

Will this damage my PC? GRUB_CMDLINE_LINUX_DEFAULT=“quiet splash pci=noaer pci=nomsi”

When I tried to install my Ubuntu 16.04.2 I faced with no screen problem! and PCI_bus errors! after many searching and trying only this modifications on /etc/default/grub solved my problem: ...
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3answers
524 views

Is there something like Turnkey Linux configuration console out there?

Turnkey Linux comes with this nice blue background console thing that has some basic options like showing the current IP, time, etc. I find its nicer for our system admins (me too) to be greeted with ...
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2answers
704 views

Could Not Start the X-Server - Linux Mint 17.2

I have an external SSD with Linux Mint Installed onto it (so not as a live USB, but as if it were an internal SSD). I used this around 1 week ago, and it worked fine. Tried to boot into it today, and ...