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<Update> turns out while it made a difference to my install it didn’t make a difference to some of the commenter’s, however I have added another solution at the end of the post.
Whenever Ubuntu is idled for a certain time, roughly 5 minutes, it goes into screensaver mode and lock itself. You must always enter your session password to unlock it and logon. Well, if that’s becoming a problem, then this brief tutorial is going to show you a one-line command to turn it off. It’s easy! Just copy and past the commands below in terminal, then press Enter to turn that feature off.
To get started, press Ctrl – Alt – T on your keyboard to open Terminal. When Terminal opens, run the commands below to disable screensaver lock.
gsettings set org.gnome.desktop.screensaver lock-enabled false
That’s it. The next time you computer goes idle, you won’t need to enter password in order to continue your session. Just move the mouse and touch a key on the keyboard to continue.
Is your desktop screen going dark or showing a blank screen when idled? By default, Ubuntu is developed with screensaver enabled. It is automatically activated when your computer becomes idled for roughly 5 minutes. When watching movies or online flash videos and the screensaver is activated, it darkens your display. If this is becoming a problem and you want to turn it off, then this brief tutorial is going to show you a single line command that will turn if off for you.
To get started, press Ctrl – Alt – T on your keyboard to open Terminal. When it opens, copy and paste the commands below, then press Enter to disable screensaver.
gsettings set org.gnome.desktop.screensaver idle-activation-enabled false
That’s it! Your display will never go dark or black again.
If the above didn’t work for you, try this:
Remove the acpi and acpi-support packages
dpkg –get-selections | grep acpi acpi-support install acpid install sudo apt-get remove acpi-support acpid