On Sat, Sep 20, 2003 at 03:17:37PM +0200, Geert Uytterhoeven wrote:
 

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.

Strangely, the problem you describe here what I got with local APIC enabled,
on a Vaio PCG-FX705 (athlon 1.3G). I think I will retry with a recent kernel
to be sure these problems vanished.

Regards,
Willy