The lock screen lets a user lock the currently-running session behind a password screen. This screen may either be blank or show a screensaver until mouse or keyboard activity is detected.

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Kubuntu 16.04 lock screen issue

I have installed Kbuntu 16.04 LTS On Intel® Desktop Board DH55TC With Intel® Core™ i3 CPU 540 @ 3.07GHz 500 GB SATA hard drive Connected to 42" LG TV with HDMI cable TP-Link 300 MB USB wireless LAN ...
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How do I configure the lockscreen to use my PAM module in 16.04

In 14.04 I was able to do this by adding a line to /etc/pam.d/lightdm and my module is invoked for both login and the lock screen. In 16.04 it is only invoked at the login screen; the lock screen ...
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28 views

Unlocking at the lock screen fails

I have encountered a strange issue with my Ubuntu 15.10 install: Usually, I lock my desktop with Ctrl+Alt+L when I leave my computer, and when I come back, I enter my password and can continue working....
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7 views

Xubuntu Keyboard partially responding after lid down only in some applications

Question: why this happens, how to track it down, how to fix? Lid down > Lid up > Keyboard works. Lid down > Lid up > Keyboard in Firefox or Terminal doesn't work, Alt+Tab doesn't work > move (mouse)...
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1answer
69 views

unable to set lock screen in ubuntu 16.04?

I am using dconf-editor to change my lock screen , but it always falls back to default one. I'd tried every method that's possible using dconf-editor, but unable to do so . what's the possible way to ...
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1answer
42 views

How to prevent Xubuntu from suspend?

Apparently, Xubuntu is totally unable to wake up. So when it goes to sleep, for whatever reason, you lose all usaved work. No Ctrl+Alt+F1, nothing. It is there, the machine is on, but the only thing ...
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25 views

xfce lock screen opens with any password

I have Xubuntu with xfce4 installed. I have recently noticed that no matter what password i enter, i can go pass the login and lockscreen as if i entered the right password. Note that the keyring and ...
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16 views

Disable numlock warning on lock screen for notebook

I own a notebook with separate number pad on the keyboard and running 16.04. On the login screen/lock screen, I see a grey warning triangle in the password input field telling me that NUM-Lock is on. ...
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13 views

How to stop screen from sleeping after I lock my session? [duplicate]

First time posting here, so here goes ... I have Ubuntu 14.04 LTS and the issue I am having is that I want to prevent my screens from fading to black and powering down when I lock my session. ...
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68 views

Ubuntu 14.04 prevent screen turning off in lock screen

Every time when I am in lock screen, the screen will automatically turn off. I have tried to change the setting in Brightness and lock turn screen off when inactive to never. It will not turn off my ...
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1answer
38 views

Ubuntu Touch - Screen lock activating while transferring files

Yesterday I added a few songs/albums from my laptop to my Ubuntu tablet. The process was very easy and it was a pleasure to be able to do something so easy. However, after I had connected the tablet ...
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20 views

How to switch to external display when screen is locked

When the laptop is sleeping and connected to the docking station (lid closed), I click the dock's external power button. From the physical indication lights I see that the laptop awakens but see ...
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1answer
214 views

Ubuntu 16.04 LTS black screen after suspension on Dell [duplicate]

I have a Dell Inspiron 15R with Intel® Ivybridge Mobile Graphics. I upgraded to Ubuntu vanilla and the latest version (16.04) few days back. Each time I close the laptop lid with the power source ...
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1answer
43 views

How to display KDE lock screen time in 24-hour format

Running Kubuntu with the Plasma desktop, 16.04. I have my desktop configured to 24-hour time, which is what I vastly prefer. But when the lock screen comes on, it shows me the detested AM/PM ...
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1answer
123 views

Ubuntu 16.04 lock screen without dimming/turning off

I'm using an HP laptop with an external screen connected through an HDMI cable, and the lid closed. Every time I lock the screen, it dims and then cuts signal to the screen, leaving it in a blue ...
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22 views

How can I temporarily disable my screen lock settings during video playback?

I use my laptop to watch movies (crazy, I know), sometimes in a browser (Firefox) and sometimes in Totem. Either way, while I'm watching, the screen dims and eventually locks, per my Brightness and ...
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2answers
140 views

When I watch a video online the screen turns off after a few minutes

in some sites when I watch a movie in a browser and I don't touch the computer the screen turns off. In other sites like Youtube I don't have that problem. I tried using caffeine but I don't like the ...
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2answers
99 views

Locked computer gets very hot despite no CPU-intensive tasks running

I'm using Ubuntu 15.10 on my HP ProBook 6470b laptop. When I lock it and walk away from my desk it often gets very hot, very quickly. Here's a screenshot of Psensor graph which shows the problem, the ...
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1answer
50 views

i3wm screen locking security issue

I am using i3-wm on Ubuntu 16.04. I am locking the screen using dm-tool lock, and it looks good, but I noticed you can circumvent the lock screen by switching a TTY (Ctrl+Alt+F1) and then switching ...
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1answer
88 views

ubuntu 16.04 dconf locks don't seem to work

I looked at dconf and locks and I came up with this script to try to enforce screen locking. It doesn't work. I used to have this working under debian but can't seem to get it to work under ubuntu. ...
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242 views

Ubuntu 16.04 Brightness & Lock - Screen does not turn off

I have 16.04 LTS on a Dell XPS13 (L321X) and an external LG display connected. I set it up to: -dim the screen -turn screen off when inactive for 10 minutes -lock ON -lock screen as soon as screen ...
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1answer
204 views

Enable [Fn]+[cursor arrows] on lock/login screen to change volume and brightness

Having a new Acer Aspire E17 E5-773G with Ubuntu 16.04 on it, I experience that the keyboard combinations to adjust volume (Fn + ↑/↓) and brightness (Fn + ←/→) do not work on the login screen or lock ...
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25 views

stop using internet when screen blanks

Related: When my screen is locked, will running processes/internet connection be halted? This is related, but exactly the opposite is desired. I recently installed the (really terrific) Radio Tray, ...
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20 views

Ubuntu Touch - Tablet screen lock issue

Recently (within the last few day) I have noticed that the lock screen on my Ubuntu tablet is not activating. I have it set to one minute and then lock. Before it was locking all OK and even fading ...
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1answer
1k views

How do I stop the constant requests for a password?

I am 70 years old and losing my memory. The only other person here is my wife, who I trust with everything. I have Ubuntu set to automatically log me in when I boot the system. I need to stop the ...
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4answers
295 views

Lockscreen access denied (AD auth via sssd)

On xenial, the lock screen doesn't work for me. Whether I enter the correct password or not, it won't let me in. However, if I click on the menu at the top right corner of the screen and choose "...
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56 views

How can I get rid of the second lock-screen in Ubuntu 16.04?

Since my upgrade to 16.04 I am presented with a second lock-screen which I would like to get rid of. The steps to reproduce are as follows: Close the lid of my laptop Laptop turns into standby Open ...
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57 views

Screen re activated imidiatlly after idle

After upgrading to Ubuntu Gnome 16.04 LTS, the screen power saver started to malfunction. When the desktop is idle, it turn off the screen as usual, but a second later it turns the screen back on. ...
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94 views

change the Ubuntu MATE lock screen theme

I would like to change the theme of my Ubuntu MATE lock screen (by lock screen I mean when you lock the account and then move the mouse to shut off the screen saver there is a window that comes up to ...
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35 views

Lockscreen Gone

Currently I am running Ubuntu 15.10 Wily with the Gnome 3 desktop environment. Every time that I set a background for my lock screen it disappears on reboot. I am using the same folder for my ...
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27 views

How to set which programs can override screen off/lock?

First, I do not want to disable completly screensaver/lock like asked here How do I disable the screensaver/lock?. I want to disable it just when certain program is running and is not minimized (the ...
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43 views

How to trigger lock-screen on visiting a website?

The website in question is my Google Drive. I have many confidential data in my Google Drive. And my google account is signed in on my laptop. Also I tend to leave it unattended at times. I want to ...
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11 views

Replacing Xubuntu locker

I want Xubuntu to use slock instead of all of it's other lockers. Its simplicity makes it better looking, more secure and lighter to run. I replaced the xflock4 in \usr\bin with a copy of slock (...
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1answer
38 views

Ubuntu Touch - Screen locking fade issue

On my Ubuntu phone, I have set my screen lock to come on after a minute of none use. This is in the Settings > Security & Privacy > Locking & Unlocking. The lock does come on as requested ...
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29 views

GNOME Lock screen showing ordinary top bar

I am currently using Gnome 3.18 via the PPA on Ubuntu GNOME 15.10 (Wily). Whenever I lock the screen, I still have the activities button and my gnome shell extensions showing. My GTK theme also is ...
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8 views

Ubuntu 12.04 Empty Password Window After Resuming From Locking the Screen

I sometimes have an issue when trying to resume after locking my screen in Ubuntu 12.04. I have a dual monitor setup. I am using ATI/AMD proprietary FGLRX graphics driver. When I lock the computer ...
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1answer
31 views

Display doesnt startup after lock

Whenever I'm not using the laptop I turn the screen off using the Fn+F2 button which eventually reduces the screen brightness to 0. By default the lock screen should start in 10 minutes, after 10 ...
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1answer
44 views

Keep running an app in lock screen

I am new at Ubuntu, and I have an app running with tomcat, to broadcast images. I need this app keep running even if I lock th system (ctrl+alt+l). Is there any way to do it? Ubuntu 14.04 LTS
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95 views

Is the lock screen secure?

I have a fully encrypted drive so I know when my laptop is turned off that nobody can access my data but what about when the screen is locked with my root password? It is often impractical to turn ...
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2answers
74 views

Locked out, but correct password

I started up this morning, only to find my password is not working and I am locked out. When I enter the correct password, or when I try to login as a guest, the screen resets and goes back to the ...
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1answer
127 views

Issues using x11vnc when xfce's lock screen is active

I am on xubuntu 14.04.04, and have successfully managed to get a VNC server up and running with SSH tunneling and such. However, I'm experiencing an issue with the VNC server, x11vnc 0.9.13. Currently,...
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1answer
36 views

The brightness of the screen is set to 0% automatically

After leaving my laptop for a long time, it locks automatically. But when I'm back, the brightness of the screen is set to 0% automatically, which makes me feel so inconvenient. My laptop is Dell ...
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42 views

how to prevent auto login after resume from hibernate

pm-hibernate work on my system correctly but after resume lock screen not show and desktop show immediately how can set ubuntu to lock after pm-hibernate and pm-suspend hibernate my os is ubuntu-gnome ...
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15 views

Only screen lock when on untrusted networks?

I want to pull off something similar to: http://www.xda-developers.com/smart-unlock-trusted-wifi/ Basically when I'm at home connected to my wifi/wired network, I don't want screen lock. When I'm ...
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27 views

Unlock causes kernel panic in Xubuntu 15.10

When I lock the screen (by clicking the padlock in the top of the whisker menu), my screen flashes black a couple of times, and then the lock screen is shown, as expected. When I enter my password, ...
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46 views

Screen does not turn off after lock screen

Like How to fix: screen saver greys out but does not turn off the screen after update?, but that question contains no valuable information. I am using Ubuntu 15.10, amd64, on an NVIDIA card using ...
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24 views

Ubuntu dimming even after brightness dimming disabled

^ I unchecked "Dim screen to save power" and my System 76 Gallago Ultra Pro with Ubuntu 14.04 installed continues to dim after about 30 seconds (less than a minute). It is really annoying while ...
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1answer
66 views

Ubuntu not asking for password to log in

I am trying to lock my system, but it seems like though it is locking but it is not asking for password to login. Even when I changed setting from Settings > User Account and rebooted my system the ...
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42 views

Screen locking and energy saving does not work when using ethernet connection

I have Kubuntu 15.10 installed on three computers, and on all three computers, I have "Screen Energy Saving" and automatic screen locking enabled in the system settings. On desktop 1, both screen ...
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22 views

Firefox plugin pauses after switching user account in Ubuntu 14.04

I am running automatic scripts (Instagram Liker) using iMacros (A Firefox PLugin) on an Ubuntu Machine. I have two accounts on the same computer. One for running my scripts and the other for family ...