3x+ battery life

uastasi · 2012-07-15 16:10:03

I've setup KDE's powerdevil in order to load powerup on AC and powerdown on Battery. But there's one thing missing: how to make KDE run /usr/bin/suspend-to-mem instead of pm-hibernate ?

taylorchu · 2012-07-16 15:20:12

@everyone
a very exciting news: powerdown now "replaces pm-utils"
as a new kde user, I am really happy that "suspend to mem" just works. If you plug or unplug ac, you are running powerdown and powerup automatically.
(and you save 0.23 mb of disk space from redhat )

I also add a new experimental functionality to "use only 1 core in battery mode"; of course you get all cores if you plug ac back on.
Cheers!

skanky · 2012-07-16 15:43:51

If you want to implement a suspend to disk, then echo "disk" to /sys/power/state, instead of "mem".

As per the wiki, people may need to add the resume module, and set the resume parameter in in their boot system. It might be worth adding that to the install instructions (I haven't upgraded yet, so apologies if you have). I know that's the pm-utils page, but I needed to do that and I don't use pm-utils, I use the echo method.

hesse · 2012-07-16 16:14:24

What exactly do you mean by "replaces pm-utils"? Is it going to be put in [Extra]? Sounds good anyway.

el mariachi · 2012-07-16 16:55:34

sounds nice can I resume form hibernation without a initramfs HOOK? I dont have initramfs

nc · 2012-07-16 18:56:39

Removed lmt today and started to use these scripts with pm-utils and upower. Thanks a lot
Btw, anyone knows why i only get ~2h with nouveau and 3h+ with nvidia?

taylorchu · 2012-07-17 03:52:13

@skanky,
hibernate might be harder than suspend for some users. It needs additional disk setup. Like me, I forgot to setup swap partition.... But yeah, it is really easy to do.

@el mariachi
right now it only supports suspend-to-mem. But it requires no setup.

@hesse
If you build one, you will see what i mean.

@nc
did you enable pcie_aspm in grub, syslinux? It gives you 1 more hours.

skanky · 2012-07-17 08:54:42

taylorchu wrote:

@skanky,
hibernate might be harder than suspend for some users. It needs additional disk setup. Like me, I forgot to setup swap partition.... But yeah, it is really easy to do.

Fair enough, that makes sense.

el mariachi · 2012-07-17 10:08:10

supposedly one can use a swap file, although I've never been successful with it

nc · 2012-07-17 13:33:49

taylorchu wrote:

@nc
did you enable pcie_aspm in grub, syslinux? It gives you 1 more hours.

Ye it's enabled with both nouveau and nvidia. I guess i'll continue with nvidia for now

Last edited by nc (2012-07-17 13:33:59)

zenlord · 2012-07-17 13:56:29

taylorchu wrote:

did you enable pcie_aspm in grub, syslinux? It gives you 1 more hours.

Just checking - I thought this measure wasn't needed anymore since the patches for the infamous power regression made it into the kernel since v3.3?

taylorchu · 2012-07-18 05:50:23

@everyone

so hibernate has arrived!

Why is this better than all the rest of alternatives? easy to set up. It does not require any partition; no compilation; no need to mess around with tuxonice kernel.
It just works.

HOWTO:
1. after installing the latest powerdown, you need to run "suspend-to-disk". in the first time, it might take about 1-2 minutes to setup. just let it run.
2. in the end of setup, you will need to paste a line to your boot menu configuration like syslinux or grub. And you will also need to add "resume" hook to mkinitcpio.conf and regenerate the image.

3. bookmark this post in your browser, so you can come back later. reboot

You now have a hibernate-enabled archlinux. good job.
try "suspend-to-disk" to test it in the first round. for kde user, you just select the hibernate in "start>leave>hibernate"

if you love this, help me create a page about powerdown in the Archwiki. Spread the love of powerdown!

ne · 2012-07-19 13:26:23

Why conflict with pm-utils?

Patatuelas · 2012-07-19 15:04:18

I have powerdown now. When I installed it was in conflict with pm-utils, so I uninstall pm-utils. I'm charging the HP Pavilion's battery now, when I test it I will report my results here.

Thank you for your work, I hope it will be good for me.

Last edited by Patatuelas (2012-07-19 15:05:08)

taylorchu · 2012-07-21 00:38:08

@ne
it provides what pm-utils does.
And I have no idea how to let kde run "suspend-to-mem" without replacing pm-utils.
In my case, I have asus laptop, only powerdown can let me shutdown, suspend without problem.

vwyodajl · 2012-07-21 04:31:03

taylorchu wrote:

<snip>
In my case, I have asus laptop, only powerdown can let me shutdown, suspend without problem.

Have you tried the

reboot=pci

option in grub? I was having the same issues as you for shutting down and your script did improve it, but have not update to you recent changes. But removing your script with the option above solved all reboot and shutdown issues for me. Might be worth a shot.

Last edited by vwyodajl (2012-07-21 04:31:35)

niklaas · 2012-07-26 18:01:06

taylorchu, thanks for your script; I'm now using it as well. Unfortunately, I get the following errors:

1 niklaas@len-t420 ~ % sudo powerdown --help
Password: 
[powerdown] cannot write 0 to /sys/devices/system/cpu/cpu1/online
[powerdown] cannot write 0 to /sys/devices/system/cpu/cpu2/online
[powerdown] cannot write 0 to /sys/devices/system/cpu/cpu3/online
[powerdown] cannot write 1 to /sys/module/i915/parameters/i915_enable_rc6

I also just installed the suspend-to-disk feature. I'm going to test the script and would like to help you with setting up a archwiki page.

taylorchu · 2012-07-27 16:55:07

@niklaas
1. powerdown has no --help option
2.

[powerdown] cannot write 0 to /sys/devices/system/cpu/cpu1/online

This results from kernel option. Basically it means that you already have turn off cpu and you cannot turn it off again.
3.

/sys/module/i915/parameters/i915_enable_rc6

You dont have rc6 support for your hardware.

niklaas · 2012-07-28 06:38:52

taylorchu wrote:

@niklaas
1. powerdown has no --help option

Well, yes, I was just trying things...

2.
[powerdown] cannot write 0 to /sys/devices/system/cpu/cpu1/online
This results from kernel option. Basically it means that you already have turn off cpu and you cannot turn it off again.

OK.

3.
/sys/module/i915/parameters/i915_enable_rc6
You dont have rc6 support for your hardware.

I wouldn't be sure about that:

niklaas@len-t420 ~ % grep name /proc/cpuinfo
model name	: Intel(R) Core(TM) i5-2540M CPU @ 2.60GHz
model name	: Intel(R) Core(TM) i5-2540M CPU @ 2.60GHz
model name	: Intel(R) Core(TM) i5-2540M CPU @ 2.60GHz
model name	: Intel(R) Core(TM) i5-2540M CPU @ 2.60GHz

As you can see, it's a Sandy Bridge CPU -- and should support rc6?

I also set the flag in /boot/grub/menu.lst and as I can see there's no error prompted at boot.

Could it be that I missed some configuration? Additionally, with your script I just get round about 6 hours of battery life. (It's a Thinkpad T420 with a 9 cell battery.) Could it be that some daemons are necessary to be loaded to successfully use your script?

Something more off-topic: When I initially installed Arch I could accomplished a battery life of about 9 hours. Just with configuring bumblebee and setting the tweaks of http://www.phoronix.com/scan.php?page=a … ower&num=1 . I think I messed something up with my bumblebee installation: Since the last kernel update, I get a longer battery life if I deactivate the discrete graphics card in BIOS; but actually there shouldn't be a difference when using bumblebee, should there?

Zucca · 2012-08-05 18:57:28

So I finally got this thing installed.
And... It's awesome (like my WM ;P), but also my CPU runs so cool that I believe that my laptop turned the CPU fan completely off. And it stays off while doing something not-so-heavy work, like surfing the web.

Thanks for this great utility.

Last edited by Zucca (2012-08-05 19:37:13)

domac · 2012-08-09 01:59:57

This barely works for me! Anyone else with Asus (u53jc) experience the same?
I'd like to reach the 10h again on 100%. Idk maybe I didn't turned the nvidia properly off…
At least powerdown stops my pc heating up!

Edit: Best stats I've reached so far was 10.2W with screen dimmed at total and chromium closed. (no use of powerdown)

Edit2: I copied some of powerdown's information and will release (like Unia, thx btw!) a pm-utils alternative… a "cluster" of scripts for /etc/pm/power.d/ My stats so far for now are: 8-11W. Not finished tweaking yet!

@taylorchu: Feel free to look at my scripts, got also influenced by you.

Last edited by domac (2012-08-11 21:48:03)

pogeymanz · 2012-08-17 12:06:13

Hi all. I'm quite excited about using this script as it allows me to dump two daemons (LMT, acpid), but I'm having an issue that is very strange to me.

The part of the script that changes scsi_host/host*/link_power_management_policy only changes host0's policy when I unplug my laptop. If I actually execute the script from the command line, it correctly changes all of them.

Has anybody else had this?

I also went ahead and unfolded to for-loop so that I just list all five of my scsi hosts and it still doesn't work.

opt /sys/class/scsi_host/host0/link_power_management_policy min_power 
opt /sys/class/scsi_host/host1/link_power_management_policy min_power 
opt /sys/class/scsi_host/host2/link_power_management_policy min_power 
opt /sys/class/scsi_host/host3/link_power_management_policy min_power 
opt /sys/class/scsi_host/host4/link_power_management_policy min_power

zenlord · 2012-08-25 09:29:52

Wiki page created: https://wiki.archlinux.org/index.php/Powerdown

It is rough around the edges: I have only yesterday installed it and wanted to know how to use it. I had to browse through all the pages of the thread to get some information, but now you can just visit the wiki and read through the most important information. Treat it as a starting point and add sections (f.e. about all the different scripts, or about suspending to mem/disk).

It might be useful to add the link to the wiki in the startpost.

Last edited by zenlord (2012-08-25 09:30:38)

webspider · 2012-08-25 11:34:14

Thank you very much, I've expanded the wiki entry a little bit more now that I know more about powerdown.

Lockheed · 2012-08-25 15:28:31

1. All those i915-related options, including grub line and script settings - they work only on laptops with i915 chipset, right? If so, then why not mention it somethere? Even Powerdown Wiki does not say anything about it.

2. Does this work if power cable was un/plugged while the laptop was off/suspended/hibernated?

if grep -Fxq "0" /sys/class/power_supply/AC0/online; then
    powerdown
else
    powerup
fi

EDIT: In fact, running it through rc.local doesn't work at all. Unplugging power does not make it run.

3. I already removed pm-utils and lmt but when I unplug power, there is something else dimming my screen. What can it be? I know it's not powerdown because dim is much lighter

4. Does this hibernation method provide compression, or is the image size as big as RAM usage?

Last edited by Lockheed (2012-08-25 17:44:07)

Arch Linux

#176 2012-07-15 16:10:03

Re: 3x+ battery life

#177 2012-07-16 15:20:12

Re: 3x+ battery life

#178 2012-07-16 15:43:51

Re: 3x+ battery life

#179 2012-07-16 16:14:24

Re: 3x+ battery life

#180 2012-07-16 16:55:34

Re: 3x+ battery life

#181 2012-07-16 18:56:39

Re: 3x+ battery life

#182 2012-07-17 03:52:13

Re: 3x+ battery life

#183 2012-07-17 08:54:42

Re: 3x+ battery life

#184 2012-07-17 10:08:10

Re: 3x+ battery life

#185 2012-07-17 13:33:49

Re: 3x+ battery life

#186 2012-07-17 13:56:29

Re: 3x+ battery life

#187 2012-07-18 05:50:23

Re: 3x+ battery life

#188 2012-07-19 13:26:23

Re: 3x+ battery life

#189 2012-07-19 15:04:18

Re: 3x+ battery life

#190 2012-07-21 00:38:08

Re: 3x+ battery life

#191 2012-07-21 04:31:03

Re: 3x+ battery life

#192 2012-07-26 18:01:06

Re: 3x+ battery life

#193 2012-07-27 16:55:07

Re: 3x+ battery life

#194 2012-07-28 06:38:52

Re: 3x+ battery life

#195 2012-08-05 18:57:28

Re: 3x+ battery life

#196 2012-08-09 01:59:57

Re: 3x+ battery life

#197 2012-08-17 12:06:13

Re: 3x+ battery life

#198 2012-08-25 09:29:52

Re: 3x+ battery life

#199 2012-08-25 11:34:14

Re: 3x+ battery life

#200 2012-08-25 15:28:31

Re: 3x+ battery life

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