I really need some help with my new laptop.
I bought a DELL XPS 13 developer edition with Ubuntu 16.04 preinstalled a couple of days ago. The only things that I have done so far (which I believe could be important) is to configure the super key to work by removing "dell-super-key" and I have installed the following software: Matlab R2017a, Sublime 3, terminator, screen, cutecom, Skype. I have also set up a build environment for embedded programming.
The problem is the following: If I open e.g. Chromium and write something in the google search field all is good. The same is true for Matlab. I can type as fast as I want on the keyboard and instantly the letters appear on the screen. The computer is also super fast when it comes to standard Ubuntu things, like changing workspace or opening applications.
However, if I open Sublime, Terminator, LibreOffice Writer or gedit and do the same the computer responds super slow. If I type fast on the keyboard it takes up to 10 seconds until the letters appear on the screen. It is not a small performance issue but completely unusable. If I hold down a key for a couple of seconds nothing is displayed on the screen for a long time, the application almost crashes (gets grayed out), then it comes back and the letters appear.
I really hope someone is able to help me find the issue.
Best regards.
