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So here's my problem: Ubuntu on this notebook/ultra-book is just too slow!

I'm now using UEFI installation because with the standard one there was the power's problem (100% CPU usage on AC-in). I'm waiting 14.04 release to update my machine but my question is why my computer is just so slow in many situations (Firefox open with some other applications, etc). The big problem is that Windows is so fine!

So I'm investigating to find those machines problem. (Just to now i hate Windows and I'm an Ubuntu user since I was 15..). Here's a screen of one of those strange situation.. doing nothing a my CPU is just like that:

enter image description here

enter image description here

So please help not for me, but for the Community. Thank you all!

Specs: AMD A4-4355M; 4GB RAM; Radeon 7400G;

share|improve this question
    
could you get a print screen of processes as well. (sort it by % CPU high to low plz) –  Ahmadgeo Mar 23 at 22:35
    
here it is! thank you for your help oi59.tinypic.com/2zedxjs.jpg –  Fabio Mar 23 at 22:45
    
I would just put in evidence that ubuntu is..STRANGE on this machine. AMD fault?! I don't know but it's so frustrating –  Fabio Mar 23 at 22:47
    
print screen shows normal CPU utilization (please run gnome-system-monitor from terminal as a root to show more processes) and post the print screen again –  Ahmadgeo Mar 23 at 22:55
    
Here's the image oi58.tinypic.com/2up2t8z.jpg –  Fabio Mar 23 at 22:59

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