Black screen after waking from sleep on docking station

[Nikola_Djordjevic]

I have a problem with laptop that has Intel HD4000 graphics and connect to external monitor via docking station.

When I unplug the laptop while in sleep and then I wake the laptop up , I can login to my session but i get a black screen with only cursor on it. The same happens when I connect laptop that is already in sleep before waking it up.

I can restart the session with CTRL+ALT+BAKCSPACE which lets me use computer. But I’d rather prefer to keep my running applications.

[wolfman]

Hi @Nikola_Djordjevic,

I am not sure if this will help at all but here goes, other than that, I would just log out rather than use sleep mode!:

Stop the screen from blanking in Ubuntu

Hi all, like the title says, if you don't like screen blanks; you can disable screensaver etc by doing the following: Open Control Center > Personal > Startup Applications > Add and give it a name and then add the command (copy and paste) to the command line, then save it and restart your PC at your leisure or straight away if you want to test it. (You can add a comment if you wish but I didn't!). Name: Stop the screen from blanking Command: xset -dpms s off s noblank s 0 0 s noexpose C…

[Nikola_Djordjevic]

I’m sorry to say it does not solve the problem. I found out that this happens only when using Compiz. Regardless of dock or sleep , the desktop get unusable when I unplug external monitor. I Switched to Compton now and it behaves perfectly.
Thank you for your time.

[wolfman]

Excellent @Nikola_Djordjevic,

please mark your own answer as solved (tick the box) so it helps others!.