RE: Problems with reboot/poweroff on SMP machine

["John Pearson" <john@illhostit.com>]

Lately my Dual Xeon server has not been rebooting properly either. When I
tell it to reboot I end up having to call the datacenter and tell them to
powercycle it because after 10 minutes it wasn't back up. If you need any
details, please provide instructions for giving them to you.

-----Original Message-----
From: linux-kernel-owner@vger.kernel.org
[mailto:linux-kernel-owner@vger.kernel.org]On Behalf Of Zlatko Calusic
Sent: Tuesday, July 19, 2005 2:52 AM
To: ebiederm@xmission.com
Cc: linux-kernel@vger.kernel.org
Subject: Problems with reboot/poweroff on SMP machine


Hi Eric and all!

Last few weeks or so I started having problems with reboot/poweroff on
my aging SMP desktop (dual PIII, Apollo Pro 266 chipset). The machine
does all steps til' the very end where it stops (hangs) before the
actual reboot or poweroff. The problem doesn't happen every time (but
occasionally). Alt-SysRQ-B/O doesn't work at the point of hang.

I did a little bit of investigation and I believe that this patch:


http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commi
tdiff;h=dd2a13054ffc25783a74afb5e4a0f2115e45f9cd

is the primary suspect for the regression (reboots and poweroffs have
been working fine for the last few years on this particular
machine). But now I need expert help. :) I'm willing to help decipher
this, so don't hesitate to ask for more details! I don't even know
what info is useful to provide at this point (kernel is virgin 2.6.12,
ACPI is compiled in, I don't use any boot time reboot= parameter, what
else?). And please Cc: me 'cause I'm not on the list.

Thanks for any info!
--
Zlatko
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