Quote:
Originally Posted by mlukaszek
Standard Ubuntu's graphical environment, Unity, causes the screen to be always reported as modified full screen, regardless of which screen changes.
That means: even if nothing changes on the screen which is connected to a docking station, we are still told by the OS to resend full screen update if anything is happening on other screen (e.g. built-in laptop screen).
This gets better in other environments - Gnome3 or KDE for example. I would be interested to see if you experience the same CPU usage if you try other env.
Thanks,
Michal
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Maybe this is a stupid question: if the problem is Unity reporting a full refresh, why doesn't the same issue appear when the same external monitor is connected directly to the mini displayport using a miniDP2DVI adapter?