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

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0
votes
2answers
39 views

Is adding a user needs password [duplicate]

In my Ubuntu after login by my user account, I want to create another user I intered bellow commands : adduser alex_2 -m I created new user, but when I want to login, Ubuntu needs passwords and I ...
3
votes
3answers
391 views

After locking the screen in Ubuntu 14.04, password is not accepted, How can it be fixed?

I'm running Ubuntu 14.04 fully updated on my laptop. Since the last update every time I lock the screen (when leaving my room for example) - when I get back and input my password, it is not accepted ...
0
votes
1answer
75 views

cannot unlock login screen 14.04

When my computer boots, entering the correct password won't start my session. I found out the problem is /home/user/.Xauthority ownership. root owns this folder and giving the ownership to the user ...
1
vote
0answers
401 views

Ubuntu 14.04 stalling with black screen w/ white cursor [closed]

The system will get to the Plymouth 'ubuntu' screen, load load, all dots filled, switches over to LightDM, but wait! No LightDM. :I Just a blank screen with that white cursor. Can't switch out to ...
0
votes
2answers
81 views

Shortcut keys for changing input source not working in Login screen

I use Shift+Alt shortcut to change the input source language and it works fine everywhere except the login screen, and when waking up from suspend. Is this a bug or am I missing something? I am using ...
0
votes
0answers
69 views

Ubuntu 14.04 boots fine, but video output stops at login screen

I'm running Ubuntu 14.04 on a DELL R320. I have no 3rd party drivers enabled. Machine boots normally, but when the login screen loads, it flashes momentarily and disappears and the monitor says ...
1
vote
0answers
29 views

Is it possible to login into lightdm interactive screen remotely?

I have this big Ubuntu desktop that dubs also as a home cinema PC. When I feel lazy, I'd love to be able to run the PC remotely and watch movies from my bed. I can turn it on via WoL. I can launch ...
0
votes
1answer
26 views

New to Linux screen problems after login

I am new to Linux just installed on Compaq with a hard driver that is completely clean. After I installed and booted up every thing works till I login. When I login the screen goes blury where I cant ...
0
votes
0answers
64 views

Set global / persistent display resolution

I am trying to set resolution to 1024x768@60hz from boot -> login menu -> default desktop settings for user accounts. My system is connected via HDMI to the display, video card details (from lspci): ...
0
votes
0answers
49 views

Gromacs configuration in Ubuntu

I installed Gromacs 4.6.5 in Kubuntu 14.04.. After installation if everything went right, by writing luck into terminal we should get a quote, according to this link: But I get error like luckcommand ...
0
votes
1answer
77 views

swich from ubuntu (unity) lockscreen/login to gnome

I have Ubuntu GNOME installed on my pc and I also installed the unity shell, the problem is I seem to have lost the GNOME login screen and lock screen, is it possible to switch back from the new unity ...
0
votes
1answer
74 views

I've broken lightdm

I've installed xubuntu-desktop metapackapge on my system and afted this action unity-greeter has gone away. Ive purged lightdm twisely, then installed lightdm and unity-greeter. But still no result. ...
0
votes
0answers
44 views

Black blank screen after restarting, but after logout the screen resumes to the way it was

I have recently installed Ubuntu 14.04 then following some webpages from internet i tried o install a couple of softwares including - Gnome by sudo apt-get install gnome-shell ubuntu-gnome-desktop ...
0
votes
0answers
210 views

Ubuntu black screen 14.04 [duplicate]

I was using ubuntu 14.04 for about 2 days now, and i restarted my pc (lenovo yoga 2 pro) no problems about the screen so far, chose Ubuntu from boot menu, Kubuntu logo shows up, screen goes black, ...
0
votes
0answers
71 views

Login screen is frozen on Ubuntu 14.04 LTS

I am running Ubuntu 14.04 LTS on my HP Pavilion desktop. It works perfectly at the first login. And when I try to log in back after a successful logout, then the login screen freezes. I cannot enter ...
0
votes
0answers
95 views

Can't login my account in Ubuntu 14.04. after ZSNES emulator froze. Guest season works fine

I've played the zsnes emulator and the game froze after one hour. Since nothing else worked besides ctrl+alt+f1 I had to reboot the system. After trying to access my account from the login screen it ...
0
votes
0answers
50 views

What does “unknown code ovk 48” mean?

When I log in after update from 13.10 to 14.04, lightdm and gdm display unknown code ovk 48, I can log in without problems (lightdm requires that I press return after the message is displayed). ...
0
votes
0answers
48 views

Cannot log in (entering correct password)

I'm having problems with logging in. Entering the correct password brings me back to the login screen. When I login to a TTY, I can't use sudo. I get an error like this: SUDO:effective uid is not 0 ...
2
votes
2answers
543 views

Black screen on login maybe lightdm problem

Hi after I entered this command in terminal: sudo sh -c 'echo "greeter-show-manual-login=true" >> /etc/lightdm/lightdm.conf' and I reboot my PC i cannot login to ubuntu. After i select the os ...
1
vote
0answers
33 views

Ubuntu login screen doesn't show up after cleaning NVRAM on a mid-2009 Macbook Pro

I have a macbook Pro mid 2009, with three partitions : OSX 10.8.5, Ubuntu 13.04 and Windows 7. EFI and GRUB are here, first EFI boots with offering the choice of the three systems then, if Linux or ...
0
votes
0answers
71 views

Login screen changed

Suddenly the login screen for ubuntu 14.04 is switched to another one with a box has a drop-down user change and password field. Only the standard dotted background one is visible when I go Suspend. ...
0
votes
0answers
17 views

Ubuntu initiallisation [duplicate]

I have a problem with Ubuntu 14.04, but I don´t know too much about computers. Two days ago, I updated my version of Ubuntu 12.04 to 14.04 and today, I tried to enter with my username and my password. ...
1
vote
2answers
352 views

lost ubuntu 14.04 default login screen

After trying to upgrade to gnome 3.12 unable to upgrade// uninstalled gnome 3.12 however lost ubuntu 14.04 default login screen Plz help
0
votes
0answers
78 views

Input Language doesn't change on login screen

The input language doesn't change on login screen on Ubuntu 14.04 when I press the key combination to change the language.I have to do it manually using the mouse.Is this a bug or is there a setting ...
0
votes
0answers
10 views

With lauch icons on left, part of dialog falls of screen to right [duplicate]

As a very new user of Ubuntu I find that loss of a strip of text on the right caused by the permanent display of the icons left side vertically to be a nuisance. Is there any way these icons can be ...
0
votes
1answer
75 views

Ubuntu 13.10, after update login loop

So, today I update some packages and then I shut it down. When I turn it on, it ask for a pw (I had automatic login). Tried several things, removing .Xauthority, .cache and .ICEauthority, check ...
0
votes
1answer
349 views

Ubuntu login screen wallpaper missing 14.04

I am new to Ubuntu and I tried to change my login screen wallpaper by using terminal according to this: Changing login screen wallpaper in ubuntu 13.04 At this time I did not know about ubuntu ...
0
votes
0answers
49 views

Remove old LDAP users from login screen?

When using computers with LDAP users, once a user logs on to a computer, they are shown on the login screen in the user list. How can we remove old users or reset the cached list? We are not trying ...
1
vote
2answers
124 views

Difference between user account and guest account [closed]

I have a rather ancient computer (pentium 4 with a really awful monitor) that I have been running the Ubuntu inspired Elementary OS for the past year or so flawlessly. For some reason yesterday when ...
0
votes
1answer
306 views

User login screen shows only gnome flashback option in ubuntu 14.04

Hello i upgrade ubuntu 13.10 development branch and successfully installed ubuntu 14.04. but my problem is on user login screen.User login screen shows only gnome flashback option so how to get back ...
1
vote
0answers
49 views

User Login Screen is not asking for password

My laptop is no longer requiring a password for my account from the user-login screen. No matter what settings I change, it never asks me for a password unless I am unlocking the screen from a ...
0
votes
0answers
149 views

How do I install nvidia drivers in nomodeset?

Under the main question, "My computer boots to a black screen, what options do I have to fix it?", specifically under "Black/purple screen after you boot Ubuntu for the first time", the answer ...
1
vote
0answers
69 views

the screen amplifier not allow me to login on Ubuntu 14.04 LTS

I'm new on Ubuntu 14.04 LTS. Looking on its resources I choose the screen amplifier (kmag??) on login screen, and now I'm not able to login and neither turn off this resource. Could someone help me? ...
0
votes
1answer
706 views

Kubuntu 14.04 change login animation/splash screen

In kubuntu 14.04 settings there is the option for changing the login screen background, but there is no more the option to custimise the animation/splash screen after the login, while the desktop ...
0
votes
0answers
171 views

Ubuntu 14.04 LTS (Onboard in Login Screen)

I just installed Ubuntu 14.04 and everything went fine, I had 2 problems. 1- When I login, I get this annoying onboard keyboard, how can I remove it? I tried going to it's preferences but still. 2- ...
2
votes
1answer
3k views

Unity greeter does not display custom wallpaper

I am using Ubuntu 14.04 LTS 64 bit . I know this question has popped up many times but I want to make it very clear that none of the posts helped me a bit. my Problem: I am unable to get my custom ...
1
vote
1answer
480 views

Remote login on Ubuntu 14.04

On Ubuntu 13.10 in Login screen there was an option for Remote Login.Where is this option in Ubuntu 14.04?How can I enable it?
0
votes
1answer
24 views

No graphical login after purging Cinnamon

I wanted to try Cinnamon and installed it: sudo apt-get install cinnamon But it didn't work well, because all the gnome stuff was missing on my Kubuntu. So I purged cinnamon and rebooted. Now I can't ...
0
votes
0answers
57 views

How to increase or decrease brightness in the login screen when running within Virtualbox?

I can't able to increase or decrease screen brightness on the login screen. Is that possible to change brightness on login screen?
0
votes
2answers
2k views

Unable to login to 14.04 after successful installation [duplicate]

After a successful upgrade to 14.04, now when I am trying to login using administrator id, It loops back to login page and doesn't load my session. Even guest is not working. When I enter wrong ...
0
votes
0answers
89 views

Can't log in after I insert the correct password

I recently tried to upgrade to Ubuntu 14.04 from the command line but it didn't work for some reason. It was "upgrading" for about two hours and when I restarted my computer I still had 13.10. When I ...
1
vote
1answer
111 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
45 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 ...
5
votes
3answers
8k 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 ...
1
vote
2answers
2k 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
3k 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 ...
0
votes
1answer
30 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
73 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 ...
2
votes
0answers
59 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
88 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 ...