How to power off with ACPI/APM?
I have an ASUS P3V4X motherboard with an ACPI BIOS. This is a desktop machine, and while APM is normally of concern for laptops, it seems to me from what I read in the kernel config help that I should be able to make the machine power itself off.
If I have ACPI enabled but not APM, when I do "shutdown -h now", I see these messages at the end:
Power Down
ACPI: S5 failed
and the machine stays powered on.
Looking back in the ACPI kernel config help, it says you can use ACPI if you
also have APM enabled, which I didn't do at first. I enabled it, and the "S5
failed" message goes away at the end, but my machine still doesn't power down. I notice in the kernel messages at boot time that ACPI says something like "APM already enabled, exiting".
This isn't that big a deal to me personally (I can always hit the power switch) but if it's a kernel bug I want to help track it down. Alternatively, if it's something I'm doing wrong I can help clarify and document the procedure for making this work.
I'm using 2.4-prerelease-ac5, which generally seems to be working pretty good for me. Other exciting details of this machine are that it has an adaptec 28160 Ultra160 SCSI host bus adapter that works fine with the disk. I'll try burning a CD with it shortly. It's got a Pentium III 667 with 128MB of ram running at 133 MHz, a 3C905B 10/100 ethernet card and a ATI Rage Millenium with 32 MB of video ram. I've got XFree86 4.0.1 on it with DRI working (and DRM and AGP enabled in the kernel) with a VIA chipset on the motherboard - I generally had little luck ever getting accellerated drivers to work under XFree86 3.x, but things went much better with 4. I get on the internet with the ppp_async module via a 56k external modem.
Mike
Signature · 10 lines
Michael D. Crawford GoingWare Inc. - Expert Software Development and Consulting http://www.goingware.com/ [email protected] Tilting at Windmills for a Better Tomorrow. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] Please read the FAQ at http://www.tux.org/lkml/
Quoted 2 lines · Michael D. Crawford
Looking back in the ACPI kernel config help, it says you can use ACPI if you also have APM enabled, which I didn't do at first.
That's wrong then, you can't use ACPI and APM at the same time.
Quoted 4 lines
I enabled
it, and the "S5 failed" message goes away at the end, but my machine still doesn't power down. I notice in the kernel messages at boot time that ACPI says something like "APM already enabled, exiting".
ACPI doesn't work very well. If you just want your machine powered off automatically you might want to try just APM.
Signature · 7 lines
Servus,
Daniel
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