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[fourcultures <657990@xxxxxxxxxxxxxxxxxx>]

This also affects my NB200 running Ubuntu 10.10 netbook edition, updated
from 10.04.

I'm testing the 'nolapci_timer clocksource=jiffies' suggestion. So far
it has completely fixed the problem of constant hanging. And I can now
listen to music on Rhythmbox with no glitches at all (an improvement
over my previous 10.04 install, which occasionally stuttered!). This
seems to suggest the hanging isn't happening any more.

But now I'm going to test the battery life. Don't see why this
particular fix should increase battery use, but it might. Will report.

[later] Update:

Running on battery, still no hangs at all and music running smoothly. As
for battery life, it appears to be as good as or better than previously
with Ubuntu 10.04 (ie a bit over 2 hours with a 3-cell battery, max
charge 22.7Wh, currently at 12Wh or 53% after 1 hour use, according to
Gnome-power-statistics). [Can someone please point to instructions for
getting better battery life out of NB200 that have worked for them?]

It may be that the bug we're experiencing is one of these (which may be the same bug):
https://bugzilla.kernel.org/show_bug.cgi?id=21032 
https://bugzilla.kernel.org/show_bug.cgi?id=20172
If so, it may be fixed in the next release of the kernel.

If this keeps working - hat tip to sfranzyshen.

** Bug watch added: Linux Kernel Bug Tracker #20172
   http://bugzilla.kernel.org/show_bug.cgi?id=20172

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https://bugs.launchpad.net/bugs/657990

Title:
  System freeze when i'am not moving the mouse or typing.