Xorg+CPU+Temperature

[gustavo halperin <ggh.develop@gmail.com>]

Hello

Please help me, My problem is when I leave the Laptop ON but with the 
screen close for a few hours. After a few hours when I open the screen 
the temperature is around the 65 C when the normal temperature is around 
the 47~49. If I run 'atop' I also see that Xorg is using 99% of the cpu, 
see below:
  PID  SYSCPU  USRCPU  VGROW  RGROW USERNAME NTHRD STATUS S  CPU  
CMD     1/21 
5346   475m14s   565m38s    294.6M    157.8M 
root                        1/L         N--  S   99%  Xorg

then after a few minutes of use, the "cpu use" down again to something 
between 0~16% and the temp to something around the 47~51 C.
What is the problem? Why it is happens ??
By the way I haven't any screen server.

 Thank you,
     Gustavo Halperin