acpi_power_off call SOLVED for laptop and desktop

[imdeemvp]

Ok when I first installed FC3 I encounter this problem:"acpi_power_off call" when turning off my laptop or desktop it would not shotdown completely. I needed to press down the power button to achieve complete shutdown.

So in my desktop I entered the bios and disabled the acpi feature (is under power management) and added this line the my kernel line in FC3: acpi=ht and this means acpi feature is disable in bios and the desktop would complete power off.

BUT I had a second problem every time I used windows XP or 2000 the pc would not power off completely. This was because acpi was disabled in the bios. I also needed to press the button to completely shutdown XP or W2K.

SOLUTION
Keep the acpi feature ENABLED in your BIOS and instead of using acpi=off, I added: acpi=ht. Now desktop powers off completely in linux or windows.

This is how it looks in the grub:

title Fedora Core (2.6.9-1.681_FC3)
        root (hd0,0)
        kernel /vmlinuz-2.6.9-1.681_FC3 ro root=/dev/VolGroup00/LogVol00 rhgb quiet acpi=ht

I hope it will help you.

UPDATE accordig to this bug report using acpi=ht may work for some motherboads and this time it did work! Finally my desktop powers off. I try about 20 times and all worked.

UPDATE This is so odd I did an installation on silimiar pc, ran all the updates and added acpi=ht to the grub and it did not work. So I tried acpi=off and It worked. The differences between both pc is the cpu clock but the ram remains the same which is ddr.
Im still working on solutions for the laptop.

[crackers]

So you appear to be saying that explicitly enabling acpi solved your poweroff issues?

Weird...

[bob]

Glad it worked for imdeemvp, but no luck with my system - hangs on acpi_power_off with acpi=on. I'm back to acpi=off and waiting for the whole thing to turn into molten slag.

[imdeemvp]

YES...
For may laptop is automatically ENABLED no option to disable it (EDITED in the laptop it stop working 11.30.04 so it may work or not). For my desktop I had disabled it at one point but XP or 2000 will not shutdown completely. So, I enabled it again and instead of using acpi=ht I addded 'ht'. And now both system poweroff completely. I no longer get the message from XP or 2000 that says: "It is now safe to turn off your computer'.

BTW.... I have a DFI motherboard with AMD 2800+

[imdeemvp]

UPDATE if you use acpi=ht it may work for some motherboards so give it a try!

according to this bug report: https://bugzilla.redhat.com/bugzilla....cgi?id=132761

[bob]

Acpi=ht did it! Thank you, SIR!

[rclark]

Acpi=ht did it! Thank you, SIR

Worked for me too. Thanks!

[imdeemvp]

I am glad its working for you guys too.

[blackghost]

I have not tried acpi=ht since I found comments that it is not a good idea for laptops:

I found this somewhere:
About comment #32:
Setting acpi=ht simply turns off ACPI here: Machine makes lots of
noise, and /proc/acpi doesn't exist. So that's certainly not a
solution here. (Actually, I believe that it may be damaging on some
systems if ACPI is turned off, due to overheating.)

[imdeemvp]

This guy says he did by commenting out "quiet" check it out: http://www.fedoraforum.org/forum/sho...9&postcount=28

[Finalzone]

Test is succesful on my system.

[imdeemvp]

Now the questions is what does acpi=ht do?

[zulaica]

sure enough, acpi=ht worked for me. before i did that, i would get some complaing about irq11. now, i don't see that complaint and my desktop powers down. thanks!!!

[imdeemvp]

Originally Posted by zulaica

sure enough, acpi=ht worked for me. before i did that, i would get some complaing about irq11. now, i don't see that complaint and my desktop powers down. thanks!!!

I am still trying to find out what acpi=ht means?

[zulaica]

i've done some searching, and all i've found so far is that

ht=run at bootup and stop.

http://mandrakeusers.org/lofiversion...hp/t15477.html

perhaps "ht" stands for "halt"? *shrug*