I'm running Mint 18 on a Dell i7 and I have this annoying issue that I can't find where its coming from.
Every 30 seconds the display freezes for about 0.5 seconds. The issue is persistent and happens EXACTLY every 30 seconds (give or take 1 second).
This is particularly annoying when playing a game or watching a movie.
I couldn't isolate the process that may be causing this, but it wasn't there for the first week or so when I installed mint.
It may be worth to mention that I have another PC running Mint 17.1 that has the exact same issue (Also a Dell)
Anyone can think of a process that does something heavy and/or synchronous/blocking every 30 seconds?
I will provide any log file or additional info if anyone has any idea where should I look.
UPDATE: This does not happen when I CTRL+ALT+F3, even when leaving all the processes alive in the graphical window.