Recent 6-beta issue: high delay when loading kernel on thinkpad on battery

[Martin Cracauer]

Jonathan Noack wrote on Tue, Aug 30, 2005 at 02:49:40PM -0500: 
> On 08/30/05 12:06, Martin Cracauer wrote:
> > I cannot nail down when exactly this issue was introduced but I think
> > it was recently.  I remember to boot this laptop fine when on battery
> > during summer.
> > 
> > Recent 6-betas make my thinkpad R40 wait for 80 seconds when loading
> > the kernel (after announcing kernel version but before probing
> > devices), when it is on battery power.  On A/C the delay is normal.
> > 
> > This is a boot -v screenshot photo of the stage where it is hanging:
> > http://wavehh.dyndns.org/tmp/thinkpad-6beta-delay.jpg
> > 
> > As you can see, -v doesn't give a clue what it is doing.  It is
> > hanging there doing nothing before reloading the kernel modules.
> > 
> > dmesg, acpi stats, kernel config etc is all on:
> > http://www.cons.org/cracauer/machines/grisu/
> > 
> > I just updated these files to be from a -v boot when on A/C.
> > 
> > Any idea what this can be caused by? Any additional tests or info I
> > can provide?
> 
> I have seen similar boot delays on a Compaq DL360 (G1?) server I have. 
> Also, I have a dual P3 machine that no longer reboots after a "shutdown 
> -r now"; it just hangs after printing "Shutting down ACPI".  I think 
> there may be some edge cases with ACPI but have no direct evidence. 
> Here's my message:
> http://docs.freebsd.org/cgi/mid.cgi?430960DD.6040608

This is still the case with 6-beta of Monday.

Unless somebody has a better idea I will allocate some time to do a
binary search of kernel version dates to track down which change
caused this.  (I don't see any possible way to debug this, no tools
available).

I rate my Thinkpad as severely hampered with this problem.  Waiting 80
seconds for nothing while Linuxers are watching over my shoulder is
more than I can take :-)

Anybody else observing this?

Martin
-- 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Martin Cracauer <cracauer at cons.org>   http://www.cons.org/cracauer/
FreeBSD - where you want to go, today.      http://www.freebsd.org/