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SubjectRe: Vaio doesn't poweroff with 2.4.22
On Tue, 16 Sep 2003, Roger Luethi wrote:
> On Mon, 15 Sep 2003 08:43:56 +0200, Geert Uytterhoeven wrote:
> > With 2.4.22, my Sony Vaio PCG-Z600TEK (s/600/505/ in US/JP) shows a regression
> > w.r.t. power management:
> > - It doesn't poweroff anymore (screen contents are still there after the
> > powering down message)
> > - It doesn't reboot anymore (screen goes black, though)
> > - It accidentally suspended to RAM once while I was actively working on it (I
> > never managed to get suspend working, except for this `accident'). I didn't
> > see any messages about this in the kernel log.
> On some machines APIC (sic) support can cause this. Try turning off UP APIC
> if you have it turned on.

If I turn off CONFIG_X86_UP_APIC I get:

| ACPI disabled because your bios is from 00 and too old
| You can enable it with acpi=force
| Sony Vaio laptop detected.

and ACPI is disabled. Halt doesn't work.

If I then pass `acpi=force' to explicitly enable ACPI, `halt' works again and
powers off the machine, but `reboot' causes a black screen with IDE disk spun
down, but no restart.



Geert Uytterhoeven -- There's lots of Linux beyond ia32 --

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds

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