I believe I had the same issue, try:

https://mail.gna.org/public/xenomai-help/2008-04/msg00185.html

google through xenomai-help

http://www.xenomai.org/index.php/Special:Google

G.

--- On Mon, 9/22/08, Gabor Kovacs <kgabor@domain.hid> wrote:

From: Gabor Kovacs <kgabor@domain.hid>
Subject: [Xenomai-help] Xenomai on thinkpad T40 Pentium M
To: xenomai@xenomai.org
Date: Monday, September 22, 2008, 3:36 PM

Hi All,

I've tried to install xenomai-2.4.4 on my IBM Thinkpad T40 Pentium M laptop

but it hard freezes during kernel bootup. (I played a bit with xenomai 
and "local apic"/HPET config options but either xenomai complains
that it 
can't be started because
 of  local apic (?) disabled or freezes
completely.) 
Any experience/suggestion?

Thanks
Gabor Kovacs

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