On Tuesday 04 May 2010 17:23:25 DB wrote:
> Sometimes when I start my desktop, System Monitor tells me that "X" is
> running at max CPU %-age. Other times, "X" is 4th or 5th in the list (I
> selected the CPU column to put the highest users on top), using 1 or 2 %.
>
> So, my question to you all: What is "X" doing & how can I stop it doing
> whatever & keep my CPU chip cool????? BTW, I have no idea what X is!!!
> I've tried killing it & that usually kills my desktop; just now killing
> it caused the system to restart.
man Xserver says:
<quote>
NAME
Xserver - X Window System display server
SYNOPSIS
X [option ...]
DESCRIPTION
X is the generic name for the X Window System display server. It is
frequently a link or a copy of the appropriate server binary for driving the
most frequently used server on a given machine.
</quote>
In other words, simply put, X is the program that produces picture on your
monitor. KDE uses X to draw windows, mouse pointer (the "arrow") is drawn on
the screen by X, and so on. X is the thing that sits between the graphics card
driver and everything else on the system that wants to draw things on your
screen. Killing X is a synonym to killing your "desktop". The only situation
when X is not used is when you boot into runlevel 3 (terminal consoles, white-
text-on-black-background experience).
If X is spiking the CPU, the problem is probably due to your video card
drivers, or KDE desktop effects or Compiz or a movie or game being played or
some other graphics-intensive activity. If you describe what you are doing on
the system when it spikes, it might help narrow down the problem. Otherwise,
it's impossible to tell.
HTH, :-)
Marko
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