On Thursday 20 February 2003 00:53, Greg Meyer wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On Wednesday 19 February 2003 06:27 pm, Sascha Noyes wrote: > > > The answer to the question is that the acpi implementation depends on > > > the apic, so if the apic does not work properly, acpi will not work > > > properly either. > > > > I've got a Compaq Presario 700 series laptop. I had to recompile the > > kernel and leave away apic to get acpi to function. The only way that I > > have tested the functionality of acpi is wrt cpu & fan throttling, > > shutdown and reboot. These all work fine. Which acpi functions depend on > > apic? How will acpi missbehave if apic is not installed. Any remedies? > > Since the apic maps the interrupts, and acpi monitors the interrupts for > activity, a broken apic implementation can prevent acpi from working > properly. I know on my machine (which is a desktop) if I boot with apic > off but acpi on, I get an entry about avery .1 second about apic errors in > my message log that I presume are coming from acpi, because if I then boot > with acpi=off in addition to noapic the errors go away. > > It seems that acpi for laptops is much more advanced than it is in the > desktop arena, so you're laptop may work fine, but many desktops get hosed.
Yes acpi is broken on a lot of bios on desktop machine. They have incomplete incompatible acpi implementations. Try to use hybernate on win98se or winXP on a desktopmachine. You wont be happy with a lot of them. as hibernate is not the same as acpi you may try to install winXP on a desktopmachine with acpi. So in my eyes the problem of acpi under Linux is that the acpi-implementation has to workaround around a lot of faulty hardware. Since Notebooks rely on a good powersaving they have to implement working acpi implementations and as apm and acpi do pretty much the same , but acpi can more than apm, the throw away apm. Didn't read the whole thread, hope this was not OT ;) -- Regards Steffen ____________________ counter.li.org : #296567. machine: 181800 vdr-box : 87 ____________________ Please dont CC me, since if I have replied I'll watch the tread. Both mails will be filtered to the ML-folder. Thanks
