Questions about the login screen, specifically customizing/troubleshooting it.

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1
vote
1answer
3k views

No login screen after boot

A strange problem happening after update. After I updated Ubuntu 12.10, I restarted. After boot, i realized that there isn't any login screen at all. I mean no login screen, just an Ubuntu background. ...
0
votes
3answers
584 views

“Failed to start session” after interrupted upgrade to 14.04

While upgrading to 14.04 using sudo do-release-upgrade my network connection was interrupted and several packages failed to upgrade. Running do-release-upgrade again reported No new releases found ...
0
votes
0answers
13 views

Ubuntu 12.04 LTS stuck at Purple Screen before Splash Screen

To give a bit of background, I dual booted my laptop using WUBI last February. Everything was working fine until now... I was transferring (cut-pasting) files from a USB flashdrive to a folder in my ...
0
votes
1answer
30 views

Password not working upgraded to 14.04 [on hold]

When at the GUI for 14.04 I cannot log in or even use guest account. I upgraded via updater from 13
1
vote
1answer
34 views

Main user login has no gui

After I upgrades from 10.04 to 12.04 I cannot login to my main users account. Before the upgrade I had created another administrative user but had never used that account with the gui. That other user ...
0
votes
1answer
23 views

No login screen on boot up

When I boot up my system it goes straight to my desktop without asking for my password on the login page. Instead there is a keyring prompt that comes up where I have to type the password. Any ...
-1
votes
1answer
278 views

14.04 freezes on start and stalls on restart/power down [duplicate]

About 2 out of 3 times I power on my computer, Ubuntu 14.04 freezes when loading some stage of the login (lightDM) screen. I have to manually power off my computer. Also, when I go to restart or ...
1
vote
0answers
368 views

Ubuntu 14.04 - enable numlock on login [closed]

Numlock is not activated in lightdm: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/1271953 Workaround for ubuntu 13.10 : sudo apt-get install numlockx gksu gedit ...
0
votes
1answer
89 views

Login loop 14.04 but guest account ok

After upgrading to 14.04 from 13.10 which worked fine, I cannot get past login as it just loops back. Guest account works fine. Can Ctrl-Alt F1 and use name and password ok there so not sure what is ...
0
votes
1answer
26 views

How to show old account on the greeter

TL;DR --> I want to know how to make an old account show up after reinstallation of Ubuntu so that I can log in to that account and not have to reinstall all the other software I had installed on that ...
2
votes
0answers
50 views

Select account based on password instead of username

Sometimes I might be forced to open my PC in front of strangers for some reason. In front of other people, I would like to make it appear that I'm logging in normally into my computer, but secretly I ...
1
vote
4answers
3k views

Ubuntu 12.04LTS stuck at login mouse and keyboard not responding

I have Ubuntu 12.04LTS installed on a dual-booted machine (i5 dual core 8G ram) and it's been working fine, but today for some reason when I logged out and tried to log back in it is stuck at the ...
0
votes
2answers
46 views

Ubuntu 12.04 LTS always stuck in Login First time, but to recovery screen second time

Presently Installed Ubuntu 12.04 LTS as stand alone through USB overwriting older linux versions option. Previously installed as dual with Windows XP. Then for about 7 times as stand alone with custom ...
0
votes
3answers
2k views

How to log in after logout in L/UBUNTU live persistent usb?

I have created a persistent live usb of Lubuntu 12.10 on a 16 GB flash pendrive with a 4GB space for persistency. It basically works like an installation, as new programs can be installed and new ...
3
votes
4answers
1k views

capture login screen-not sucssecful

I'm using Ubuntu 12.04 . If more information is needed, please tell me. I Tried some guides to cature my login screen: How can I take a screenshot of the login screen? ...
1
vote
2answers
2k views

Blank screen after entering password on login screen after clonezilla restore

I get a blank screen after entering my login password at the ubuntu login screen. And after a short while the login screen is restored. Any further attempts result in a similar cycle as before. This ...
2
votes
0answers
36 views

How do I rotate the login screen?

So I am trying out the 14.04 and I keep both of my monitors in portrait mode. But the login splash is in landscape. But I can't seem to figure out how to rotate my login splash or where the config is ...
0
votes
1answer
50 views

Any way to change lightdm unity greeter background without changing current config files?

About changing lightdm unity greeter background image, most answers are to change /usr/share/glib2.0/schemas/com.canonical.unity-greeter.gschema.xml. Is there any way to change the default wallpaper ...
0
votes
1answer
37 views

Login goes nowhere after upgrade to 13.10

After upgrading to Xubuntu 13.10 I rebooted once and found that after login, regardless of account, I end up stuck after the login window disappears, with a movable pointer and the background from the ...
0
votes
1answer
31 views

Change color of background on login screen

EDIT: I should mention I'm running Ubuntu 12.04 with Cinnamon, though I could switch to Unity to change, then switch back. Alright, so I changed the background on my login screen (the cheap way, by ...
0
votes
0answers
9 views

Startup stopped at Xinerama - normal?

For an unknown reason when I rebooted my computer it stopped working. I see it can start the graphics engine as it shows the looping cursor and I can even move it, but the login screen does not ...
0
votes
0answers
19 views

Problem with start session screen

(Sorry for my bad english) Hi Guys, my problem is that I unistalled a program (GVFS) and I used purge with the purpose of remove the dependencies, I used these commands sudo apt-get remove ...
0
votes
2answers
415 views

lightdm-gtk-greeter-ubuntu “crashes” after installing KDE4.10

I have a weird problem, which I didn't found anything on the internet about. I installed KDE4.10 (from kubuntu-ppa/backports) a week ago, and it changed the loginscreen. After there was something ...
0
votes
3answers
1k views

How To Set Default Wallpaper As Login Screen Wallpaper [Automatically]?

I`m Unable To Set The Login Screen Wallpaper Of My Custom Wallpaper Is There Any Working Tool Which Changes Easily Without Any Bugs
0
votes
1answer
37 views

Unable to login from GUI?

Running 13.10 x64 on an Ubuntu laptop (System 76 Kudu Professional). When I bootup and provide my password; the screen goes black for a moment then returns to the login screen. Switching tty I am ...
0
votes
2answers
59 views

Logon screen forever [duplicate]

My ubuntu is in trouble, I changed my graphic card, tryed some manipulations, and now I get some problems with the login-screen. I have the login-screen, normal, but when I type on password ( I am ...
3
votes
10answers
21k views

Login screen loops unless you login as Guest

I am running a VMWare Player with a Ubuntu 12.04 LTS Precise Pangloin as Guest on my Windows 7. Sometimes I get the shutdown blue screen error in Windows, this time it happened when I was running the ...
0
votes
1answer
158 views

Login screen wallpaper is not working in ubuntu

i played with ubuntu tweak tool to change my login screen background but i could't use custom pictures.To use my pictures i changed permission to usr/share/backgrounds folder. I search wikipedia and ...
0
votes
1answer
23 views

Lost the graphical login screen and the unity desktop

All of a sudden, when I boot up my computer, I am no longer getting a graphical login screen. I am just getting this: When I enter in my username and password, I am presented with the command line ...
7
votes
8answers
11k views

Desktop login fails, terminal works

I have a freshly setup 12.04 LTS pc system (120 GB SSD, 1 TB HDD, 16 GiB RAM); since a few days, I can't login to the graphical desktop anymore: there is very short flashing shell window which ...
3
votes
1answer
273 views

Add White dots to desktop

Some people may not like the white dots on login screen of ubuntu 12.10, But i really love it , is there any way to add these dots desktop also and is there any way to remove these from the ...
0
votes
1answer
21 views

After installing system update I can't login to my user

At the login screen, I type my password, then hit enter and I see a quick black screen with some text, as if something crashed, and it goes back to the login screen.. Help?
1
vote
1answer
67 views

unable to type in password at login screen after restart? [duplicate]

I am locked out of my laptop after restarting it. When I am in the login screen, I have 3 options: me / registered user guest session remote login When I click on the password field/text box that ...
39
votes
14answers
58k views

Ubuntu gets stuck in a Login Loop

My problem: As you can guess my Ubuntu is stuck in a login loop when trying to enter my desktop. Means the screen gets black and soon after that the login screen comes back. I'm a Ubuntu Newbie so if ...
0
votes
1answer
2k views

Ubuntu 12.04 not booting to a display manager or login manager

When I boot up my computer with Ubuntu install on it, it's keeps booting and booting forever. It loads the boot screen but it doesn't boot up. The only way to log in is to press Ctrl+Alt+F2, then ...
0
votes
0answers
38 views

How to solve high contrast problem?

I set high contrast on login screen in Ubuntu 14.04, after I restart system on login, the screen displays only black screen , so I'm unable to login . Could you please help me to turn off high ...
109
votes
36answers
280k views

How to fix “The system is running in low-graphics mode” error?

Note: This is an attempt to create a canonical question that covers all instances of "low-graphics mode" error that occurs to a user, including but not limited to installation of wrong ...
2
votes
1answer
245 views

How to input commands on the Live CD mode selection screen

http://www.ubuntugeek.com/how-to-fix-ubuntu-10-04-lts-lucid-blank-screen-at-startup.html I have the problem in the above answer page and to fix it I need to highlight Live Mode on the CD/USB and ...
0
votes
0answers
7 views

How to remove the audio and virtual keyboard fron logon

I have ubuntu 12.04.Whenever I get at the login screen I get a voice giving me introduction,etc. and also a virtual keyboard is placed below the screen.How do I remove it?
0
votes
1answer
38 views

Problem with changing login screen

I tried several time to change my log in screen by using sudo dpkg-reconfigure lightdm. I choose lightdm from here. But my log in screen is unchanged and look like below. How can I change this and ...
0
votes
1answer
44 views

Grey screen background during logon

Earlier during log on my screen's background used to be purple,but now it has become grey in colour,is it OK?But can anyone tell me why does did it happen.And,how can I switch from Lubuntu to ...
0
votes
0answers
24 views

Error before logging in

Whenever I logon to my lubuntu 13.10.It shows me the logo of lubuntu and then shows me a blank screen.I have lubuntu 13.10 as well as Ubuntu 12.04 LTS.What can I do change the lubuntu into Ubuntu ...
0
votes
0answers
13 views

Error at log on screen

I always get an error before logging into Ubuntu 13.10.the error says that there is graphics problem.When I say I'll run the system in low-graphics mode for once it shows me blank screen with just ...
0
votes
1answer
27 views

Limited Desktop environments seen at logon

Whenever I log on and I want to change my desktop environment.I click on the button to change my environment.I have many desktop environments almost 10-12.It is arranged in alphabetical order.So U ...
6
votes
6answers
7k views

How do I prevent being kicked back to the login screen every time?

Just finished upgrading from Ubuntu 13.04 to 13.10. Everything works fine. After the installations, I restart to finish the installations. In the log in screen, I put my password and then it goes back ...
1
vote
1answer
45 views

Log in screen background different from desktop

Since Ubuntu 13.04, in my laptop, when I choose an image as desktop background from my pictures folder, the login screen remains as the default purple image. To solve that I had to add the image I ...
1
vote
0answers
195 views

Ubuntu 13.10 How to enable numlock at boot time for login screen?

I found this How to enable numlock at boot time for login screen? But after I performed this steps (luvr answer from Apr 29 '12 at 20:11 ): Ensure that numlockx is installed: sudo apt-get install ...
0
votes
0answers
13 views

nm-applet notifications prevent typing in login manager

To manage my (wireless) network connections I use nm-applet. Every time I start my system there pops an notification up which says Disconnected and a few seconds later a second one connected to .... ...
0
votes
2answers
61 views

How can I add Images for each user to Ubuntu 12.04 Logon Screen?

I am not talking about having unique backgrounds on the login screen. What I am looking for is a icon image besides each user name on the logon screen. This was something that was possible in ubuntu ...
0
votes
0answers
41 views

Ubuntu 12.04 starting on terminal

Well, today i started my ubuntu 12.04 laptop but it doesn't load!!!! It ends up in a black screen(terminal) with my user name asking for my user and password i press startx and it says the program ...