On Wed, 2003-03-05 at 10:55, Ric Tibbetts wrote: > Jack Coates wrote: > > > On Wed, 2003-03-05 at 10:29, Miark wrote: > > > >>I have an old backup machine that doesn't reboot or powerdown > >>in Linux, but yesterday I got the idea to try apm=off at bootup. > >>The machine now reboots and powers down perfectly. > >> > >>I'd like to know why, but the only anomaly I noticed is that > >>APM is disabled in the BIOS. If APM is disabled in the bios, > >>does that mean you _must_ turn it off in Linux also to allow > >>reboots and powerdowns to work? Or is that just a coincidence > >>on my machine? > >> > >>Miark > >> > > > > in theory it's coincidence, because ACPI's presence is supposed to force > > unload of the APM modules. However, something about your laptop could be > > making the APM stuff hang up? > > > > > I've noticed the same on other systems (non-laptops). That is apm was > running, they wouldn't shut down. But turning that off would fix the > problem. > > Ric
I don't know what kernel you are running but I believe the newer ones are creating a lilo default of acpi=off. Hence the fallback to apm James
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