No APM possible in my laptop (fsck gives protect fault)

Phk

Hi there...
This is indeed a sad topic, because i've been looking around for info about this for months..
Well, this is my last try to find someone who helps me..

I Have a Siemens-fujitsu AmiloD8820, a great laptop! However, i can't use APM.
I (think) I've done everything right:
APM is active in the kernel (2.6.7-love2-rc3), and ACPI is not.
Grub's kernel params are: apm=on acpi=off

But when i've rebooted, the kernel boots, loads, and i get something like this:

b0fh_ · Posted: Tue Jun 29, 2004 7:47 pm Post subject:

Some hardware (especially some japanese laptops (*cough* toshiba *cough*)) NEED acpi irq routing to work properly. Sucks, but happens. Seems to be your case, unfortunately.

But keep your faith.. First, if your laptop is newish, it is unlikely that APM will give you susupend... In my experience, APM suspend worked for old laptops, which only supported APM and not ACPI. My current one (cpq evo) supports APM, but no way it will suspend-to-ram using APM like my old toshiba 2100cdt did. AND, the ACPI suspend does not work either, it seems that it need windoze to do some voodoo with acpi for it to work. Of course linux has no idea of what to do here ;-)

BUT, you can use this wonderful piece of kernel patch called 'swsusp' (check http://swsusp.sf.net). It does full suspend-to-disk, and I got it working perfectly on my laptop. Suspend-to-disk is surely a lot slower than suspend-to-ram, but it has the advantage that you don't need to worry about the battery drains nor about data loss if the battery is removed/exhausted while suspended. Also, swsusp patch allows laptops, desktops, servers and the kitchen sync to be suspended/resumed... no need for BIOS or ACPI help at all. Try it.

peace.
_________________
"Contrary to popular belief, UNIX is user-friendly. It only happens to be picky on its friends."

Phk · Posted: Tue Jun 29, 2004 8:23 pm Post subject:

That was an excellent answer.. Thanks..

However, i don't know how to try suspending with ACPI.. Lol, is it even possible?? :wink:

I'll try the other tool anyway tomorrow

Thanks a lot again,
[[ ]]'s
_________________
"# cat /dev/urandom >> /tmp/life"

b0fh_ · Posted: Tue Jun 29, 2004 9:16 pm Post subject:

Yes, it is possible to suspend with ACPI, but... (there is always a but...)

Most laptops implement the ACPI suspend this way:

Do some thing, ask windows to do other things, then do something else, yada, yada... IE, unlike the old APM suspend, it needs the OS to do part of the work, and, ofcourse, OS == windoze...

Surely they could implement everything in the BIOS like in the old days, but that makes things more expensive, and everybody knows laptop makers are cheap bastards.

The good thing about swsusp is its ability to work without any BIOS or ACPI support... everything is done by the linux kernel itself, which is very cool.

peace.

ooops forgot to mention :

to suspend with ACPI, try: