Xubuntu blank screen after wakeup

Question

Xubuntu 14.04. After wake up from sleep, it asks to enter password. I entered the passw. and screen goes black. On Ubuntu 14.04 waking up was just ok. Lenovo E330 laptop with intel HD graphics.
add: If lid was closed, not clicked sleep

Solution 1

This is all great and fine. But for a noob or anyone who is not accustomed to CLI it doesn't make the problem any less bothersome. Here is the solution that worked for me.

• Completely remove Light Locker using Synaptic Package Manager
• Install Gnome Screensaver from the Ubuntu Software Center
• Restart the computer

Solution 2

Easier way: Switch to different session using Ctrl+Alt+F1 (or F2-F6) and then back to your session using Ctrl+Alt+F7

Solution 3

Strangely, one day when I fresh installed Xubuntu, that problem stopped. Still, if this happen, try using the following tip:

1. Get into the command line using Ctrl+Alt+F1.

2. Put your credentials user/password.

3. Write the following:

   sudo service lightdm restart
   

So it will take you back to the login screen.

Hope that helps! (It's not a fix for this problem, though. I had to get used to click the Suspend button instead of closing the lid.)

Solution 4

I was able to work around the problem by going into settings, opening "Light Locker Settings" and setting "Enable light-locker" to off.

Learn more about light locker at http://xubuntu.org/news/screen-locking-in-xubuntu-14-04/

View more solutions

Comments

[TuKsn]

Perhaps this bug bugs.launchpad.net/ubuntu/+source/xfce4-power-manager/+bug/… ?

[Reza]

I just uninstalled lightlocker and installed xcreensaver.

[WolfangAukang]

I can't give a full certain answer about it, but as a solution for that problem, it worked that way. I made that supposition because of how my given solution has worked for me, but I will edit it.

[JimLohse]

Problem with this, you need root access. I have to bug my boss to run this. All the same, good answer, should be the accepted answer. Note that on different models (hardware related? not sure) there is a range of Ctrl-Alt-FKeys that will open a text-based login, some I have seen, this only works on F4-F7. Off the top of my head (booted into Windows now, heresy, I know) I think it's Ctrl-Alt-F3 that gets you back to the graphical login?

[WolfangAukang]

@JimLohse In Xubuntu, it is Ctrl+Alt+F7, if I'm not wrong. Now I'm Fedora, which is a different command, as you said

[Satya Prakash]

Click on Light Locker Setting does not work for me. No action after click. No program appears. I see dim light on wake-up and there Xubuntu stops.

[lovetl2002]

This works for me.

[spicy.dll]

This did not work for me. On a Lenovo Thinkpad X1 Carbon

[Shashwat]

This worked for me but it restarted the session except for few windows. Is that expected?