On Mon, Jul 10, 2006 at 03:46:16AM -0400, Philippe Meunier wrote:

> I have a Thinkpad laptop (T43) and I'm about to install OpenBSD on it.
> I have a few questions regarding hibernation though.  I've read various
> documents online so I'm fairly confident with regard to the "how" but out
> of curiosity I have some questions below regarding the "why", plus a few
> comments.

Hibernation works OK on my T43 (not perfectly, but well enough).

tphdisk is in ports/sysutils, so that's one thing less to worry about. As I
remember it (and I could be wrong here), in order for hibernation to work
the "16" partition has to be the first on the disk. The best tip I can give
is do the minimum possible work to create the hibernation partition and
install a minimal OpenBSD and test whether hibernation works. There's
nothing worse than installing and configuring everything, only to press
Fn-F12 and be greeted with a tiny beep which means that the ThinkPad isn't
going to hibernate.

A couple of caveats though: both my T43 (and my old T40) refuse to hibernate
9 times out of 10 with certain PCMCIA cards (i.e. pressing Fn-F12 does
nothing). Taking the cards out rarely effects this - it's like the ThinkPad
BIOS has thrown a strop, and I have no idea why this happens. On my T43
(can't remember about the T40), the machine also consumes notably more power
when it comes out of hibernation (this doesn't seem to be related to
SpeedStep, but I'm not entirely sure). Again, I have no idea why this
happens, and there have been several power related commits in the past 3 or
4 weeks, so I have some hope that this might have been fixed.


Laurie
-- 
http://tratt.net/laurie/     -- Personal
http://convergepl.org/       -- The Converge programming language
http://sosym.dcs.kcl.ac.uk/  -- Software and Systems Modelling Team
http://modelsconference.org/ -- MoDELS/UML 2006 conference

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