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Questions tagged [gdm]

GNOME Display Manager (GDM) is a program which provides Ubuntu GNOME's graphical login screen.

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Display Problems Basic Apps

i am running an Ubuntu 18.04.1 with all Packages up to Date. At the moment i have trouble Displaying some Programms such as gdit and calc. In Gedit the background should be white, but it is somehow ...
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18.04 login fails after screen lock

After doing an update today, I can no longer login after a screen lock. I enter my password, the screen goes black and then returns to the login screen. The only way to login again is to reboot. ...
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116 views

Tutorial installing gdm them in Ubuntu 18.04

How to install this theme https://www.gnome-look.org/p/1152353/ in Ubuntu 18.04?
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Reinstalling Ubuntu 18.04

Something happens and I can't boot my system. I'm using Ubuntu 18.04 and I plan to reinstall it anyway. My hard drive has two partitions, one for my system and the other for my personal data. So if I ...
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125 views

Ubuntu 18.04 Gdm theme change

I want to change my login theme. I'v downloaded theme from gnome-look, and I can't find proper tutorial how to do it. Thanks in advance!
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Why does gdm start a new session after exiting a console TTY? Only happens with proprietary NVIDIA drivers

I am on Ubuntu Desktop 18.04.01. When I have the NVIDIA proprietary drivers installed and I switch to a new console TTY (no GUI, just text), login, and then exit, gdm3 starts a new session of the ...
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It takes very long for Ubuntu 18.04 to show login screen after a reboot

From when I reboot my Ubuntu 18.04 until I see the login screen it takes about 2 minutes. It seems that booting the kernel is not the problem. The following is the result of running systemd-analyze ...
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114 views

Changing from Nvidia to Nouveau causes hang at boot

I'm on Ubuntu 18.04.1 LTS. I was running Nouveau and everything was fine, but in order to run Android Studio and emulate an Android device, I needed to install the Nvidia driver. I used the Software &...
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Ubuntu 18.04 Display Driver Lots of Locked Files

My system has been frequently locking up since upgrading to 17.10 and it appears to be that xorg it taking the processor to 100%. I purged the NVidia drivers but can’t reinstall as countless files and ...
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129 views

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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17 views

How to stop and restart the gdm.service after the log-in screen is shown using systemd (18.04.1)?

I kind of have a strange problem where, when I log into my system (18.04.1) I will hang at a black screen and nothing will happen any longer. This is related to the proprietary Nvidia drivers and a ...
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Desktop session crashes when resuming from standby

I'm having this issue since Ubuntu 17.10, now I'm using 18.04. When I suspend my laptop and leave it sleeping for a few hours, then when I try to resume it the desktop session crashes and the X ...
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GDM3 is programed to start on VT1. Is there a way to change it

I would like to start GDM3 in VT9 (because it is running in a container. I do not want to have a conflict). Is there a way of doing that. 1. Modifying and adding to /etc/gdm/custom.conf FirstVT=9 did ...
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499 views

No login screen after ubuntu 18.04.1 update

After the upgrade from 18.04 to 18.04.1, when booting instead of going from grub menu to the purple login page, it goes directly to tty1. If it helps the current kernel is 4.15.0-33 and I've already ...
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63 views

gdm, ubuntu-session removed due to update

After updating my system using the usual "Install pending updates" option, according to /var/log/apt/history.log, ubuntu-session, ubuntu-desktop, gdm3 and gnome-shell have apparently been removed, ...
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Is it possible to create a python script that implements face recognition and can be run every time on ubuntu 18.04 login screen? [duplicate]

I want my laptop to automatically login by recognizing my face so that I don't have to type the password. Is it possible to run python script at the Ubuntu 18.04 login screen?
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282 views

Ubuntu 18.04 stuck in login loop with missing .Xauthority file

My computer running Ubuntu 18.04 is stuck in a login loop. I am using lightdm as my display manager, but trying to switch to gdm3 didn't fix the problem (I was still stuck in a login loop). I have ...
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82 views

GUI feature missing from full ubuntu installation 18.04

I encountered multiple problems installing libraries (to python) that have many dependencies..at some point I think it just crashed, now it boots only to terminal window starting from login. ...
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Unresponsive Application Menus of GTK Applications - Ubuntu 18.04

I have a fresh install of Ubuntu 18.04.1. i installed GScan2PDF v2.1.4 (from Jeffrey Ratcliffe's PPA). Something really weird happens when i try to crop a scanned document: I open GScan2PDF. I click ...
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Disable zoom on GDM, Ubuntu 18.04 [duplicate]

Ubuntu seems to detect that my laptop has a high resolution screen and, by default, sets everything to a 200% zoom. I prefer to set this back to no zoom, but with larger font sizes. This was no ...
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334 views

Blank screen with only mouse cursor (Ubuntu 18.04)

So, I've been experiencing this issue lately. I'm on Ubuntu 18.04, GDM/Gnome, default Ubuntu desktop. My graphics driver is nvidia-390 from the graphics-drivers PPA. My graphics card is a GeForce GTX ...
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1answer
432 views

Fingerprint-GUI login ISSUE with new 18.04 LTS

This exact same question was asked here but the community missread and marked inacurately as a duplicate. fingerprint-gui and 18.04 login issue I am also NOT asking HOW TO install. I am asking ...
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Gnome Display Manager shutdown after installing NVidia 340 driver

I'm a new Ubuntu user. I installed the 18.04 LTS and changed my graphics driver from an open-source driver to the proprieatary NVidia 340 driver. When I restarted my computer after that, GDM failed to ...
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1answer
53 views

How can I get to TTY from a broken login screen?

I have Ubuntu 18.04 LTS and I just installed kernels 4.13.4 and 4.17.11 with ukuu to attempt to fix an overheating issue. This seemed to break all of my boot images as none of them will boot properly. ...
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197 views

GDM3 LockScreen - User name Background Color - How to Change? Ubuntu 18.04.1

i am with Ubuntu 18.04.1 Is there a way to change the Orange Color in the below Image? its GDM3 LockScreen.
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Could not initialize class sun.awt.X11GraphicsEnvironment

I have follow log into error file: ERROR - Http Connection exception caught [/212.117.188.67:52973] -- java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironment at ...
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1answer
286 views

Ubuntu fails to boot fully, stuck in log screen “ppp link was shut down”

When booting into my Ubuntu 18.04 install after upgrading, I am first faced with a very long boot screen, followed by many messages, the last from GNOME saying something about "the ppp link was shut ...
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1answer
400 views

Ubuntu 18.04 boots to black screen without nvidia, tried lightdm, xfce, but nothing worked

I upgraded from Ubuntu 17.10 to 18.04 and everything was fine for about 2 moths after the upgrade. Now, my system boots to a black screen (the monitor backlight keeps on), and I can only reach the ...
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177 views

Alternative greeters for GDM?

Where can I find some alternative greeters for GDM? And if I wanted to change the lock / login screen to look more like the lock screen of Windows 10, how would I accomplish this?
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1answer
2k views

How to disable GUI on boot in 18.04 (Bionic Beaver)?

It appears that sudo systemctl disable gdm3 && sudo systemctl disable gdm do not work in 18.04 to disable the windowing system at bootup. What's the method for doing this now?
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170 views

Check Resolution to 18.04 gdm3 Issue

After a recent software update my computer stopped booting into the normal login screen. Instead I see several terminal logs that ends with Started User Manager for UID 120 Or something like this ...
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1answer
440 views

Ubuntu 18.04 autostart script with gdm

How can I start a program/script as root as soon as GDM starts. I need the said program/script to start even before the user has logged in. It needs to start as soon as the GDM login screen shows up. ...
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166 views

gdm - how to rotate screen with xrandr

I have a default install of ubuntu 18.04, plus i3 installed. i3 probably not relevant, but providing it for context as having the screen rotated in the window manager is 90% of what i need. Looking ...
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1answer
479 views

installed i3, but no WindowManager choice present on login (Gdm / Ubuntu 18.04)

I have a default install of 18.04 desktop. I've installed i3, which succeeded, including creating /usr/share/xsessions/i3.desktop as in How do you add a new window manager to the gdm menu? On the ...
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1answer
149 views

Ubuntu 16.04 experienced an internal error

My Ubuntu was stuck in a login loophole hence I removed lightdm and installed gdm instead. Somewhere in the instructions someone suggested to add a sleep 1 in a file. After I did so the system has ...
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Should Ubuntu start two gdm instances? [duplicate]

After some issues with graphics I've noticed that my Ubuntu 18.04 installation seems to start two instances of GDM, one on the first TTY and the one where I log in initially on the second. If this ...
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1answer
636 views

How do I disable the swipe to unlock curtain? [duplicate]

My computer is not a phone. This swipe to unlock thing is ridiculous. Yes, I know Esc is supposed to substitute for the swipe, but the whole curtain thing does not interact well with my video setup. ...
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34 views

updater ask me to reboot my computer, then I can't see my desktop [duplicate]

When I start my laptop, it shows stoped. It just after the updater ask me to reboot, then I couldn't reach my desktop. How should I do to figure it out? The last line of the screen is: [ OK ]...
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1answer
218 views

Scripting the hiding of username on login screen (18.04)

I have a script to set up an ubuntu workstation with standard settings. One of the things it did on 16.04 was hide the usernames from the login screen. Moving to 18.04 and I am having some ...
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3answers
7k views

gdm3 does not start in ubuntu 18.04

I recently upgraded my laptop from ubuntu 17.04 to 18.04. It worked perfectly well and I have been using it without any problem.. But yesterday I issued apt upgrade and it upgraded some packages. Then ...
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Unestable “x/gdm” after 18.04

I don't understand nothing well about x11, gdm, wayland and so on, but since I updated to 18.04, the graphic desktop system seems unestable: I have two displays and community theme installed. I'm ...
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2answers
2k views

Ubuntu 18.04 freeze on login screen, shutdown and restart - GDM vs LightDM?

On a fresh install of the official Ubuntu 18.04 I often got random freeze on login screen, and constant freeze on shutdown and restart. I find those 2 years old questions: Ubuntu 16.04 Freezes at ...
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161 views

Ubuntu startup stuck on fsck loop

Issue My Ubuntu 18.04 boot is stuck in a loop switching between turning black and showing the following line: /dev/nvme0n1p5: clean, 481726/7323648 files, 8253625/29267456 blocks. - This happens ...
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286 views

Ubuntu 18.04 : How to play sound before login [duplicate]

I remember an old time when the login screen played a drum sound before login (actually the dialog-question.ogg from Ubuntu sound theme). I found the sound useful to inform you the system was ready so ...
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835 views

Blank Screen after booting into Ubuntu 18.04. No login screen visible. Struck at this blank screen with blinking screen

I have Ubuntu 18.04 installed with lubuntu desktop (amd graphics chip in built). Yesterday I did software update and shutdown. Next day when I login, it is going to blank screen with blinking cursor. ...
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1answer
273 views

Input devices stop working after logout or switch-user in ubuntu 18.04 LTS

After clicking logout or switch user, once the system reaches the greeter/login screen, input devices -- keyboard, mouse, touchpad -- stop working, making it impossible to login back or shutdown. ...
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1answer
342 views

Install gdm3 - 3.28.2-2ubuntu1 on ubuntu 18.04

I'm trying to fix this bug: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1766137?comments=all In this feed, it says it is fixed in gdm3, version 3.28.2-2ubuntu1 . But I cant update to that ...
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1answer
47 views

Understanding my ubuntu desktop appearance

This is a total newbie question, but I can't seem to figure out how my Ubuntu (16.0.4) desktop appearance works. I can't even understand the terminology so I don't know what to search for. I know ...
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1answer
26 views

No internet for Chrome/Opera if not logged through GDM but Firefox is OK

If I don't use a graphical-display manager (GDM,LightDM, etc...) then I don't get access to internet for Chrome/Opera but only with Firefox. Do you have an idea? Also, is there any doc about ...
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1answer
2k views

Clock on login screen in 24-hour format, desktop in 12-hour format? 18.04 Upgrade

Recently upgraded from Ubuntu 16.04 to 18.04. As I have been setting up my GNOME desktop, I changed my clock to a 12-hour format (AM/PM) in System Settings. However, my login screen still shows the ...