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

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0
votes
2answers
17 views

Ubuntu 14.04 Returns to Login Screen After Login

When I type in my password to my newly installed Ubuntu 14.04 computer, it returns me to the login screen. I've seen other answers but those were to Ubuntu 13.04 and older and didn't work.
0
votes
0answers
9 views

ubuntu gnome 15.04 login wallpaper how to set size like zoom or center?

i know how to switch wallpaper by swapping and renaming image noise-texture.png but it doesn't fill the screen and repeat looks horrible so how do i get it to fill the screen i tried using bigger ...
145
votes
38answers
422k 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 ...
0
votes
1answer
62 views

I can't see my desktop only the terminal

I'm completely new to this, I put in the cd and I get this terminal thing when I turn on my computer it asks for login and password I enter that, and then all it says is: tommy@tommy:~$
93
votes
20answers
128k 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. When I login, the screen gets black and soon after that the login screen comes back. I'm a Ubuntu ...
2
votes
1answer
34 views

How to edit (CSS) LightDM GTK+ Greeter

Is there a manual or does anyone know how to edit the (CSS) files for the LightDM GTK+ Greeter? I'm already using LightDM Greeter Settings, but I want more customization. Somehow the webkit greeter ...
0
votes
2answers
23 views

/usr/bin no longer in path after booting into windows 7

I have a dual booted windows 7 / ubuntu 14.04 computer. Everything in ubuntu worked fine until I booted into windows and then switched back to ubuntu. Now when I try to login it keeps sending me ...
1
vote
6answers
4k views

Login loop 14.04 but guest account is accessible

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. I can login to the console by hitting Ctrl+Alt+F1 using username and ...
0
votes
0answers
19 views

Ubuntu 14.04 LTS Gnome cant load desktop

I have problem with ubuntu 14.04 LTS. On Ubuntu I have installed gnome and lubuntu desktop and I´m using gnome. Yesterday I have installed security update and virtualbox update. When I run ubuntu ...
2
votes
5answers
6k 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 ...
8
votes
9answers
18k 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 ...
0
votes
0answers
17 views

I can't login to Ubuntu on Virtualbox

When I enter my password and press enter, it processes for a while and then loops me right back to the account login screen again. I'm using Ubuntu 14.04. I've tried using the advice on this thread ...
1
vote
0answers
19 views

How can I remove a specific user from the Ubuntu login screen? [duplicate]

I am using Ubuntu 14.04LTS. When I login, there is an extra user called 'Oracle' present. How can I hide this?
1
vote
0answers
21 views

Ubuntu 14.04 stuck in login loop [duplicate]

I installed the cuda toolkit 7 and right after I restarted I was stuck in a login loop. I tried all the suggestions I could find which includes deleting the .Xauthority file, .profile, reconfiguring ...
2
votes
1answer
32 views

Can't get rid of Lubuntu's Login Greeter

If I lock my computer or logout, when I log back in, I want to see unity-greeter. But I can't seem to get rid of Lubuntu's greeter upon logging in. I once installed Lubuntu but have since uninstalled ...
0
votes
0answers
37 views

Can't login into Ubuntu VM

I've installed Ubuntu 14.04 32 bits into VirtualBox on a Windows 8.1 32 bits, but when I try to login, it just sits there for a while thinking, a black screen pops and it goes back to the users, it ...
0
votes
1answer
18 views

No sound after login in 14.04

I have clean install of Ubuntu 14.04. I had some kind of freeze yesterday and after I rebooted the laptop I have no sound in system. But I do have sound on login screen - I hear the "banging" sound. ...
0
votes
1answer
31 views

Ubuntu automatically logs on to guest account [closed]

I installed Zorin 9 using a USB on my Dell Inspiron 1440 laptop After the installation completed and I rebooted the system, Grub doesn't show up on my external screen, waited for 20 secs, pressed F1 ...
8
votes
2answers
74 views

How do I add or manipulate Application/System Indicators in the login screen?

I would like to remove several of the Indicators that usually appear in the upper-right-hand side of the login screen. In particular, I would like to remove the accessibility, keyboard layout, power, ...
0
votes
4answers
258 views

ubuntu 14.04 login loop problem

My Ubuntu 14.04 is stuck, when trying to login my desktop. Means the screen gets black and soon after that the login screen comes back. I followed all steps in Ubuntu gets stuck in a Login Loop Even ...
0
votes
0answers
57 views

Ubuntu 14.04 Blank screen at login. Nvidia

Ubuntu 14.04 Blank screen at login. Nvidia Geforce 820M, has intel too. HP laptop Can hear the login sound. When I close the lid and open it again, it shows the login after coming back from standby. ...
0
votes
0answers
28 views

Send text from remote ssh to login screen [closed]

I've a Ubuntu machine which runs 15.04 unity desktop environment. I've successfully set up remote ssh using openssh. I want to remotely start graphical applications (on the remote machine) which I do ...
1
vote
3answers
56 views

How to hide administrator account or root in Login screen? [duplicate]

I used Ubuntu 12.04 and I want to only user account appear on the Login screen without guest and administrator account. My administrator account cannot view to everybody when their Login. ...
2
votes
0answers
20 views

Unable to login from User account or Guest account (not a duplicate question)

I have Dell 3521 laptop without dedicated video card. It came with Ubuntu 12.04 installed. One fine day, it prompted me for an upgrade, which i went for. During upgrade, its battery finished and once ...
3
votes
0answers
31 views

Cannot login after routine update

I went through a regular daily update a couple of weeks ago, and since then I have been unable to log in to my ubuntu account or the guest account. I have tried the solutions suggested in these ...
2
votes
1answer
174 views

Login password problem

I am using kubuntu 12.10. My problem is when my kubuntu starts, in login screen it shows my name & a field for giving password (previously what i have choose for my account). But if at this ...
0
votes
1answer
231 views

LightDM and GDM login loop. Ubuntu 15.04 Gnome 3

At first the GDM worked just fine but all of a sudden I lost the ability to login. I can still get to my desktop using startx (sound doesn't seem to work when I do that but it might be a by-product of ...
0
votes
0answers
37 views

No login prompt to GUI after motherboard upgrade

After changing motherboard in my Ubuntu 15.04 computer I ran into problem with logging in GUI. For an instant moment I see a standard login window. Immediately thereafter the following window shows. ...
1
vote
1answer
919 views

Black Login Screen Ubuntu 15.04

After updating from 14.10 to 15.04, the login screen is black. Just by changing the mouse pointer do I find the password text field; password typed in and then all works normal. Any ideas?
-1
votes
0answers
30 views

ubuntu 15 login or lock not working

when I select lock, the screen goes black. If i restart, the log in screen appears but does not allow me to type a password, it just logs in automatically even though the lock setting is on. Lock was ...
1
vote
3answers
32 views

Why do I have all the sudden a user called “postgres” on my login screen?

It appeared just like that, a quick searched suggested that it's a user created by a database application but why is it on my login screen?
2
votes
0answers
27 views

System Logs out when unused for some time instead of going into lock screen

I have switched to XFCE4 some days back from Unity, but now i again switched to Unity. From that time onwards I am facing following problem. My system logs out automatically when unused for some ...
1
vote
0answers
23 views

Cant login after installation

I have installed Ubuntu 15.04 but then i try to login using my password the screen goes black and some text is shown realy fast in the upper left corner then I am back at the login. Why cant I login?
0
votes
1answer
36 views

change login screen without sudo

I'd like to understand whether a user, without root permissions, can change login screen background, in the same fashion as one can change desktop background or icon size in unity, in particular ...
0
votes
0answers
35 views

What's causing my login resolution to reset incorrectly?

I'm trying to set up my 4 monitor system so all monitors are of the correct orientation during the login screen. I've set my lightdm.conf file up as follows: [SeatDefaults] ...
1
vote
5answers
1k views

Login goes back to login screen [duplicate]

Ubuntu dont let me login in a graphic session. I type the password (it detects if it's wrong) and even typing it wright the system take me again to login screen. I've found this other question and ...
0
votes
0answers
24 views

Asus netbook shows white screen when booting

I Have asus net book and Ubuntu 14 installed. Whenever I start my netbook it shows white screen. I have to then restart and then goto advance option from grub menu and then select previous kernel to ...
2
votes
5answers
7k views

Ubuntu 13.04 - can't login to Unity, keep going back to login screen with all users

today I've updated openssl and libssl (automatic update). After reboot I can't login with any user (even with Guest or new one) into X. I've tried with installing gdm, gnome-session-fallback - no ...
0
votes
0answers
60 views

Ubuntu Studio Upgrade to 15.04 Degrades Login Screen Format

I upgraded Ubuntu Studio to 15.04 from 14.10 this week. At login (the greeter?) the screen[1] is uniformly grey. There is no login dialog. Before the upgrade, the dialog appeared on the login screen. ...
0
votes
1answer
41 views

After the most recent Ubuntu update I cannot login

I have searched through other questions but none of the answers or comments have worked. I havent been able ti update mt computer for a while so I did it all at once and many changes were made. I ...
0
votes
0answers
24 views

Password restriction is not working in Ubunutu 14.04

Earlier I tried installing some apps (PlayOnLinux and Wine) and used the previous command in a terminal. Maybe this is the reason? sudo apt-get install curl Also Im getting a pop up requesting to ...
0
votes
1answer
41 views

I deleted my home folder, now I can't log in through Unity

I deleted my home folder when followed the steps in: ecryptfs-setup-private --undo I'm not worried about the data or anything, but I can't log in through Unity anymore. I switched to root in the ...
0
votes
0answers
36 views

Lenovo 738726U black screen with mouse pointer on Ubuntu 14.04.2 log in screen

Important Info (maybe): I apologize upfront if I ask something wrong. 1st time asking a question..anywhere online. Already researched problem A LOT! But my system is old and not listed. First ...
5
votes
2answers
3k views

Caught in loop when trying to login after upgrade from 14.10 to 15.04

After an otherwise uneventful upgrade from 14.10 to 15.04 I cannot login. When I provide my password the screen flickers briefly and I am back at the login screen. I have checked permissions on ...
0
votes
1answer
1k views

Just upgraded to 15.04 and i'm crashing at the login screen

I just attempted an upgrade from 14.10 to 15.04, the upgrade completed and i get as far as the login screen but when i input my password the screen blacks out flashes a bunch of text that i haven't ...
3
votes
3answers
6k 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 ...
0
votes
0answers
154 views

Installed kubuntu-desktop package on 15.04, now login screen flickers between Kubuntu and Ubuntu every second or so?

I installed the kubuntu-desktop package just after getting 15.04 and the screen now flickers between the two login screens as if they both started and want 50% time of the screen, is there anyway to ...
0
votes
1answer
53 views

lightDM GTK greeter won't log in unless root

I've been building an Ubuntu distro from the ground up, and I decided to use the LightDM GTK Greeter. Everything is going good, until I decide to log in to the non-root account. If I try to log in to ...
0
votes
0answers
31 views

Wrong (EN) keymap after fresh install

After a fresh install of ubuntu 14.04.2 you might end up dumped on a login screen that only gives you the "EN" keyboard map to enter your password. Of course, when installing you changed to your own ...
12
votes
8answers
30k views

Changing login screen wallpaper

I have been trying to change my login screen wallpaper to one of my own using ubuntu-tweak. The wallpapers are located in Ubuntu's default wallpaper folder and I have given all users read privileges ...