ACPI issues (maybe)

Joe Talbott josepht at
Mon Mar 5 07:57:42 PST 2007

On Tue, Mar 06, 2007 at 12:09:12AM +0900, YONETANI Tomokazu wrote:
> On Sun, Mar 04, 2007 at 06:22:42PM -0500, Joe Talbott wrote:
> > On Mon, Mar 05, 2007 at 01:24:47AM +0900, YONETANI Tomokazu wrote:
> > > 
> > > I feel relieved to hear that somehow ;)  I saw a similar problem on
> > > some of PCs around, but disable_on_poweroff always worked.  Does updating
> > > BIOS fix it?
> > 
> > I updated to the latest BIOS from Toshiba and there is no change.
> That's too bad.  Can you try to see if `acpiconf -d' also locks up your
> laptop.  What it does is call acpi_Disable() to transfer the system into
> legacy(non-ACPI) mode, and this function is also called when you reboot
> it, or try to shutdown with hw.acpi.disable_on_poweroff=1.  You'd better
> try this in single-user mode to avoid fsck in the next boot.

I do not get a lock-up with 'acpiconf -d'.  Though lock-up doesn't
seem like the correct term.  With hw.acpi.disable_on_poweroff=1
a 'shutdown -h now' shuts down the laptop as usual but at the "Press
any key to reboot..." message I must press and hold the power button
to power off the laptop.  With hw.acpi.disable_on_poweroff=0 a
'shutdown -h now' shuts down the laptop and a single tap of the power
button powers off the laptop.  I seems like the laptop goes into
suspend mode rather than actually powering off the hardware.


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