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From: Mikael Pettersson <mikpe@csd.uu.se>
To: linux-kernel@vger.kernel.org, rl@hellgate.ch
Cc: mingo@redhat.com
Subject: Re: APIC support prevents power off
Date: Mon, 21 Jul 2003 03:13:52 +0200 (MEST)	[thread overview]
Message-ID: <200307210113.h6L1DqiY018985@harpo.it.uu.se> (raw)

On Sun, 20 Jul 2003 16:36:13 +0200, Roger Luethi wrote:
>On some UP boards (e.g. ASUS A7A266) enabling support for local APICs keeps
>the machine from powering off on shutdown. It will just hang instead.
>
>This has been observed by others before [1]. A warning in the respective
>configuration note seems in order (or a proper fix if anybody has one).
>
>Roger
>
>[1] http://marc.theaimsgroup.com/?l=linux-kernel&m=105561164424871&w=2

Insufficient data to draw anti-local-APIC conclusions.
- ensure you have the latest BIOS
- if you're using APM, ensure that CPU_IDLE and DISPLAY_BLANK are
  disabled, and that APM isn't built as a module
  (these things are known to cause APM hangs in UP APIC systems)
- if you're using ACPI, try without ACPI, or at least with ACPI not
  doing any power management

A very general "may break some BIOSen" warning could be in order.

/Mikael

             reply	other threads:[~2003-07-21  0:59 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-21  1:13 Mikael Pettersson [this message]
2003-07-21  9:54 ` Roger Luethi
2003-07-21 10:16   ` William Gallafent
  -- strict thread matches above, loose matches on Subject: below --
2003-07-22  8:35 Mikael Pettersson
2003-07-22 11:45 ` Mark McClelland
2003-07-22 23:28 ` Roger Luethi
2003-07-20 14:36 Roger Luethi

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