[Bug 30570] Re: CPU usage very high with no running tasks using it

[Erik]

*** This bug is a duplicate of bug 30557 ***

I can confirm this is a problem on my HP Compaq nc6230.  Intel Pentiume
M processor 1.86Ghz.  Running the official kernel 2.6.15-25-686 gives me
a couple dozen percentage points higher CPU usge when idle while the
2.6.15-25-386 kernel leaves me at near 0 percent CPU usage when idling.
It's always the X process that shows to be using the CPU time.  Here is
the process as listed in gnome-system-monitor:

/usr/bin/X :0 -br -audit 0 -auth /var/lib/gdm/:0.Xauth -nolisten tcp vt7

gnome-system-monitor shows overall CPU usage at ~50% while top shows a
fluxtuation of ~15-35% (it's harder to see what the real usage is w/o a
graph).  The 386 kernel usage is what should be expected, which is
nearly at the bottom for CPU usage.  All of this is while "idle", of
course.

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CPU usage very high with no running tasks using it
https://launchpad.net/bugs/30570