Questions tagged [display-manager]
This tag is for questions about software that manages the graphical login screen and session on your Linux system. This includes popular display managers like - gdm, lightdm, sddm, lxdm,kdm,etc.
140 questions
3
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1
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175
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Issue with 2 Monitors in XFCE using a Docking Station
I'm running XFCE on a Lenovo T460 and a docking station. I have the laptop screen, one monitor connected via VGA, and another connected via DVI.
On the DVI screen, when I open a window on my desktop ...
- 96
0
votes
0
answers
553
views
Debian 13 w/ gdm3 boots to black screen with a blinking underscore
I recently installed Debian 13 RC (trixie) on VMWare using the net install image and during the installation I opted out the desktop environment. After the installation, I installed the gdm3 packages ...
- 27
1
vote
0
answers
54
views
Xorg not starting when invoked from Python
I'm creating a display manager (dm) in python, which waits to Xorg to start in order to run the GUI.
Python
(omitted unnecessary code like widgets and classes and functions)
import os
(more imports ...
- 35
0
votes
0
answers
706
views
"Failed to read display number from pipe" when running SDDM on Arch linux ARM (Virtual machine)
I wanted to try Arch and as I have an M1 Mac, I need to use the ARM version of arch or otherwise my Arch is slow as fuk because it's emulated.
I'm using UTM as my virtual machine (for those who don't ...
- 119
0
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0
answers
90
views
Does there exist a scriptable Display Manager that allows me to login a user?
I've been looking at Display Managers like SDDM, GDM and LightDM, but it doesn't seem as if they support a non-interactive login.
I want to issue a command to have it login to one of the users, ...
- 227
0
votes
0
answers
699
views
Display manager that works well with multiple displays and multiple sacling
I am looking for a display manager that works with multiple displays and multiple scaling. I am running Linux Mint on a laptop with a 4k screen. I also have a 1440p portable monitor and a 1440p ultra-...
- 119
0
votes
1
answer
1k
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No GUI or login shell on boot
When I boot my pc (Debian 12 with Gnome3) I get directly taken to a blinking line instead of a login promt or a GUI. From there I can switch tty (Alt + F2) and then get a login promt and after login I'...
- 101
2
votes
0
answers
36k
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How to start KDE from command line interface
I installed Fedora 38 via the Network Installer (also called Everything) and there was no desktop environment preinstalled so I installed plasma-desktop package which is labelled as Plasma Desktop ...
- 27
0
votes
0
answers
46
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Are GDMs faster than CDMs in starting Xorg?
I suppose since graphical display managers already launch Xorg, they would just have to re-initiate it rather than launching it from the start like startx does.
So in that case does Xorg completely ...
- 43
0
votes
0
answers
149
views
Logging changes to environment variables
I'm trying to debug some login behaviour where I have both my display manager and systemd (and potentially others) altering some environment variables (the XDG_* variables). Does anyone know any way ...
- 1
0
votes
1
answer
237
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Using a builtin GUI in openSUSE
I want to browse the internet with firefox and found that there was no DISPLAY environment variable and I also had the following message :
You did not install any X-Server (e.g. Xorg)!
Please install ...
0
votes
3
answers
4k
views
Enable a generic user to start X
I have Debian, Sid if it matters, and I'd like to start X from the console, rather than using a display manager, but when i type startx <RET> I receive the following message
xinit: connection to ...
- 1,406
3
votes
1
answer
3k
views
How to get BIOS Device Name from Linux, same as Windows Device Manager format
My laptop has a display adapter and from Windows 10 I can see its BIOS Device Name from..
Device Manager > Display Adapters > Properties > Details > "BIOS device name"
And from ...
- 433
1
vote
0
answers
1k
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How do I switch between users, without logging out?
I am using Lubuntu, my desktop environment is lxQt and screensaver is xScreensaver.
I'm trying to figure out a way to switch between users, (e.g. when pressing meta + L).
Even though, it is possible ...
1
vote
0
answers
131
views
XFCE Display manager hangs after applying settings
I often have the problem that display-manager appears to hang the UI thread after applaying some settings (like disabling a screen) (see screenshot), and thus i cant click the "Keep settings"...
- 143
4
votes
0
answers
804
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 ...
3
votes
0
answers
1k
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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 ...
- 31
0
votes
0
answers
802
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
...
0
votes
2
answers
5k
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 ...
- 11
0
votes
1
answer
390
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/...
- 85
0
votes
1
answer
1k
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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 ...
- 11.1k
0
votes
2
answers
250
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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 ...
- 153
1
vote
1
answer
303
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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 ...
- 55
9
votes
2
answers
13k
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 ...
- 128
3
votes
1
answer
4k
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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 ...
- 18.9k