[Howto] Power Management for your laptop using ACPI

Message

Earthwings · Post by **Earthwings** » Tue May 18, 2004 9:41 pm

Any ACPI related errors in dmesg?

dmesg | grep ACPI

Make sure to run the latest BIOS. It might be a problem with the DSDT. See these threads:
http://forums.gentoo.org/viewtopic.php?t=158462
http://forums.gentoo.org/viewtopic.php?t=122145

TheCoop · Post by **TheCoop** » Tue May 18, 2004 9:52 pm

the ac adapter/battery state isnt updated, ie if it is plugged in on startup it keeps on saying it's plugged in regardless, similarly it keeps on saying its on battery if it isnt plugged in on startup

codedmart · Post by **codedmart** » Tue May 18, 2004 10:07 pm

If I dmesg | grep ACPI this is what I get

Code: Select all

ACPI: No IRQ known for interrupt pin A of device 0000:00:10.0
powernow: Trying ACPI perflib
ACPI: (supports S0 S3 S4 S5)
ACPI: Looking for DSDT in initrd ... not found!

hope that helps because I have no idea what it means.[/code]

lampshad3 · Post by **lampshad3** » Thu May 27, 2004 4:01 pm

blmartin777 wrote:I have a gentoo system up and running. I was following your how-to and it got to the part where you said to
cat /proc/cpuinfo | grep "cpu MHz"
cd /sys/devices/system/cpu/cpu0/cpufreq/
echo -n userspace > scaling_governor
echo -n 1000000 > scaling_setspeed
cat /proc/cpuinfo | grep "cpu MHz"
When I tried to cd /sys/devices/system/cpu/cpu0/cpufreq I don't have that. I have everything up to /sys/devices/system/cpu/cpu0 but no cpufreq so I tried to create one (as normal user and as root) but it wouldn't let me. So I am not sure where to go or what to do from here.

Same here

I have a Compaq Armada e500

Xerroz · Post by **Xerroz** » Fri May 28, 2004 6:16 am

hey EarthWings, whens your kde battery profile program gonna be released??

Earthwings · Post by **Earthwings** » Fri May 28, 2004 6:50 am

Xerroz wrote:hey EarthWings, whens your kde battery profile program gonna be released??

I'm working on it, but no promises for a release date yet

@blmartin, lampshad: I've got more time tomorrow and will have a deeper look at it.

Remenic · Post by **Remenic** » Sat May 29, 2004 11:36 am

I am using Linux 2.6.5-gentoo-r1, and ACPI does not seem to be fireing any battery/ac_adapter events. I can check the status of the ac_adapter from /proc/acpi/ac_adapter/AC0/state, and it is updated correctly. However, the default.sh script never gets called when I unplug the AC adapter.

I have added an echo "$group" >> /tmp/acpi to see what events get passed to default.sh, and so far I've only seen the 'button' event. I have compiled the battery and ac adapter drivers built-in.

Earthwings · Post by **Earthwings** » Sat May 29, 2004 12:06 pm

What laptop are you using? For a Dell 51xx, please see http://bugme.osdl.org/show_bug.cgi?id=1752 as mentioned early.

mindstormmaster · Post by **mindstormmaster** » Thu Jun 03, 2004 6:50 am

Has anyone been able to get hibernation, using any method, to work when X is running?

I can get Suspend-to-Disk to work when X is not running, but it's a pain to have to stop X each time.

Earthwings · Post by **Earthwings** » Thu Jun 03, 2004 7:56 am

Yes, me

But only with swsusp2. Do you use that, too? If not, try it. If yes, do you have a nvidia card? I think swsusp2 also has an option to start and stop X automatically.

@Xerroz: I think in about four weeks. It's progressing well, and I'll make a real announcement once it's ready.

redflash · Post by **redflash** » Tue Jul 06, 2004 3:36 pm

I have the same problem as Remenic.
I can't recognized any events from ac_adapter or battery.
/proc/acpi/ac_adapter/ADP0/state is changed correctly
All drivers are build in.

Earthwings · Post by **Earthwings** » Tue Jul 06, 2004 4:07 pm

What laptop, kernel version are you using?

redflash · Post by **redflash** » Tue Jul 06, 2004 4:16 pm

elitegroup G551 Centrino
kernel : gentoo-dev-sources-2.6.7-r7

Earthwings · Post by **Earthwings** » Tue Jul 06, 2004 4:35 pm

Any ACPI related error messages in dmesg? Did you check whether a BIOS update is available?

redflash · Post by **redflash** » Tue Jul 06, 2004 8:39 pm

no acpi errors and the bios is uptodate

redflash · Post by **redflash** » Sat Jul 10, 2004 6:06 pm

now i use cron to look every minute
it works great

pi-r · Post by **pi-r** » Mon Jul 12, 2004 9:02 am

Hello,

First of all, thanks a lot for this wonderfull guide... But if got one problem :

-Speedfreq doesn't work for me... (In fact it had work once, decreased the CPU freq when I unplugged the AC but when I plug the AC after, I did not have an increasing... The frequency was stable around 600 MHz...)

I've got this strange message in /var/log/messages when I switch between the runlevel :

Jul 12 10:52:24 germaine logger: Switching to default runlevel
Jul 12 10:52:24 germaine rc-scripts: Could not kill pid '3680'
Jul 12 10:52:24 germaine rpc.statd[21682]: Version 1.0.6 Starting
Jul 12 10:52:24 germaine init: Trying to re-exec init
Jul 12 10:52:33 germaine logger: Switching to battery runlevel

As you can see, No problem for switching from default to battery runlevel, but for the battery to default, I've got a special log...

Thanks a lot for giving me some help...

Pi-r

My PC : Acer 6003lmi centrino 1.6 Ghz

noookz · Post by **noookz** » Sat Aug 21, 2004 8:47 am

I have the same problem as blmartin777. However, my problem is my chipset isn't supported...I have Intel 440 BX/ZX/DX, so looks like I'm out of luck...

noookz · Post by **noookz** » Sat Aug 21, 2004 8:48 am

-sorry, double post

forsen · Post by **forsen** » Sun Nov 28, 2004 11:33 am

hi! is there a mirror of the howto some place? my isp have lots of problems with their routing these days, and i really want to try that howto!

forsen

brodo · Post by **brodo** » Sun Nov 28, 2004 5:01 pm

noookz wrote:I have the same problem as blmartin777. However, my problem is my chipset isn't supported...I have Intel 440 BX/ZX/DX, so looks like I'm out of luck... :cry:

Not necessarily. Compile a recent (2.6.10-rc2) kernel with CONFIG_CPU_FERQ_DEBUG enabled and CONFIG_X86_SPEEDSTEP_SMI as module, pass cpufreq.debug=7 on the boot command line, issue a "modprobe speedstep-smi" and either send me (linux AT brodo DOT de) the dmesg or post it here or in a different thread. Also append the output of /proc/cpuinfo.

brodo · Post by **brodo** » Sun Nov 28, 2004 5:03 pm

pi-r wrote:-Speedfreq doesn't work for me... (In fact it had work once, decreased the CPU freq when I unplugged the AC but when I plug the AC after, I did not have an increasing... The frequency was stable around 600 MHz...)

Is there a directory

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/sys/devices/system/cpu/cpu0/cpufreq

? If so, what does cpufreq-info [see http://bugs.gentoo.org/show_bug.cgi?id=69320 ] return? Do you use an userspace cpufreq daemon like speedfreq, cpufreqd, powernowd, cpudyn, ...?

Earthwings · Post by **Earthwings** » Mon Nov 29, 2004 10:41 pm

forsen wrote:hi! is there a mirror of the howto some place? my isp have lots of problems with their routing these days, and i really want to try that howto!

http://www.gentoo.org/doc/en/power-management-guide.xml
http://www.stud.uni-karlsruhe.de/~uxhz/ ... draft.html

Notice the latter is a draft version that contains things that are currently blocked by some bugreports.

Edit: fixed link

brodo · Post by **brodo** » Mon Nov 29, 2004 10:45 pm

Earthwings wrote:http://www.stud.uni-karlsruhe.de/power- ... draft.html

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The requested URL /power-management-guide-draft.html was not found on this server.

Earthwings · Post by **Earthwings** » Mon Nov 29, 2004 11:24 pm

Thanks, forgot a couple of directories...

[Howto] Power Management for your laptop using ACPI

seems like dead topic...nonetheless

Re: seems like dead topic...nonetheless