How do I change the length of time the lock screen appears for?

lock-screen

When my screen is locked and I then reawaken it, by moving the mouse or pressing the keyboard, the password entry screen appears. How can I change the amount of time that is taken before the password entry screen turns off?

To be specific:

I lock my screen Ctrl+Alt+T
Screen goes blank
Move mouse to bring up login screen
If I do nothing else the screen turns off again after 1 minute

In my Brightness and Lock settings I have the screen set to turn off and lock after 10 minutes, but I can't see a setting to determine how long it takes for the screen to turn off after the lock screen has been woken. It seems to be set to 1 minute by default, can this be increased/reduced?

enter image description here

Solution 1:

Ubuntu 17.04 and earlier (Unity)

Open System Settings, click Brightness & Lock and select a value for the screen turn off option, Turn screen off when inactive for:

screenshot

Choose your time delay in the drop-down menu.

Ubuntu 17.10+ (Gnome Shell)

Check this question.

Solution 2:

You can not do that anymore in Gnome3.

In gnome2 you can change lock-screen timeout from gnome-screensaver settings.But In Gnome 3.2, gnome-screensaver doesn't exist, and screen locking is part of Gnome Shell.

They have reimplement some function, but not all. On Ubuntu you can access all power-related settings with dconf-editor from org.gnome.settings-daemon.plugins.power.

You can use x-screensaver as described here:

How can I change or install screensavers?

Solution 3:

Just had the same problem but could not resolve the issue with the answer provided by Kurshid Alam. On Gnome 3.28 using dconf-editor:

The screen saver turns on automatically when the session is considered idle

org . gnome . desktop . screensaver . idle-activation-enabled

The easiest way to delay the screensaver is to increase the time limit for idle

org . gnome . desktop . session . idle-delay

Or using terminal

gsettings set org.gnome.desktop.session idle-delay $((15*60)) && \
gsettings set org.gnome.desktop.screensaver lock-delay 0 && \
gsettings set org.gnome.desktop.screensaver lock-enabled true

Beware of possible impacts on laptop battery charge due to other services affected by the idle status.

Solution 4:

Settings -> Power -> disable dim screen when inactive & set blank screen to never