I'm using Ubuntu 13.04 and I guess ever since I updated it from 12.10 I've been having a problem with qt applications (VLC and K3B, specifically). Sometimes, when I open them, the title bar doesn't work. It is unclickable, so when I try to double click it (to maximise it), or drag it, or click on one of the control buttons, the window simply minimizes. The solution I found was to Ctrl+Super+Up, so the window is maximized and the title bar disapears. If I restore the window again the title bar works normally again.

Here are some prints:

Ghost bar in VLC Maximized VLC Same problem with K3b


I have few suggestion you could try. 1. Check if the problem persists with other users created on your PC/Laptop 2. If the programs are working well on other user accounts, probably it has something to do with you misconfiguration of your profile.

What I would usually do is re-install unity:

  1. sudo apt-get install --reinstall unity-services

  2. sudo apt-get install ubuntu-desktop


I would guess it has something to do with your windows decorations. Do you have Compiz installed? If so I would suggest re-installing, or at least checking your window decoration settings.

Re-install ↓

apt-get update

apt-get install compiz-core

apt-get install compiz

Hope this helps...Good luck!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.