Higher power consumption after suspend

Hello,
It seems that my power consumption is significantly higher after resuming from a suspend than before. I suspend with the systemctl command. Measuring the battery usage (with powertop or looking at /sys/class/power_supply/BAT0/power_now on my laptop), I get the following numbers :
- 6-7 W before suspend
- 10-11 W after
Those number are quite stable in time, in particular the higher consumption stays until shutdown. I have tried looking at the power decomposition of powertop, and it seems that the backlight display consumption is indeed higher, although I keep the same luminosity level. I tend to consider the decomposition usage by powertop as a guess estimate anyway, so I am not sure whether this means anything.
Any ideas on how to solve this issue, or how to investigate further on?
Cheers,
Guillaume

Have a look at powertop before and after suspend. I noticed that some power saving options get turned off when suspending. I don't have a solution though.

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High power consumption after update

I recently updated all my packages (it had been a few weeks since I had done this last) and I've noticed my power consumption has jumped dramatically. Before I would average around 13.0W and now the baseline seems to be about 18.5W. I use laptop-mode-tools.
I'm happy to post the output of any command but didn't want to spam as I'm not sure what would be valuable.
I have looked at powertop, but without being able to compare to the past I'm not sure how to diagnose this. Any suggestions or pointers would be greatly appreciated.
I have a Thinkpad T410: Linux alpha 3.11.2-1-ARCH #1 SMP PREEMPT Fri Sep 27 07:35:36 CEST 2013 x86_64 GNU/Linux

It's possible I suppose that it is related to audio codec power management. After I upgraded I had to add myself to the audio group to get sound working again. I also noticed snd_hda_intel is always pretty high up in powertop.
Finally, I use laptop-mode-tools, and it appears audio codec power mgmt isn't working by default. I can manually select it to turn it on. I also saw this output in journalctl:
Sep 29 11:57:17 alpha slim[1048]: [001:307] F->C: ["getdevicestate","15","0",["__default_device","HDA Intel MID, CX20585 Analog - Default Audio Device","HDA Intel MID, CX20585 Analog - Default Audio Device","HDA Intel MID, CX20585 Analog - Front speakers","HDA Intel MID, CX20585 Analog - 4.0 Surround output to Front and Rear speakers","HDA Intel MID, CX20585 Analog - 4.1 Surround output to Front, Rear and Subwoofer speakers","HDA Intel MID, CX20585 Analog - 5.0 Surround output to Front, Center and Rear speakers","HDA Intel MID, CX20585 Analog - 5.1 Surround output to Front, Center, Rear and Subwoofer speakers","HDA Intel MID, CX20585 Analog - 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers"],"0",["__default_device","HDA Intel MID, CX20585 Analog - Default Audio Device","HDA Intel MID, CX20585 Analog - Default Audio Device","HDA Intel MID, CX20585 Analog - Front speakers","HDA Intel MID, CX20585 Analog - 4.0 Surround output to Front and Rear speakers","HDA Intel MID, CX20585 Analog - 4.1 Surround output to Front, Rear and Subwoofer speakers","HDA Intel MID, CX20585 Analog - 5.0 Surround output to Front, Center and Rear speakers","HDA Intel MID, CX20585 Analog - 5.1 Surround output to Front, Center, Rear and Subwoofer speakers","HDA Intel MID, CX20585 Analog - 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers","HDA Intel MID, HDMI 0 - HDMI Audio Output","HDA Intel MID, HDMI 1 - HDMI Audio Output","HDA Intel MID, HDMI 2 - HDMI Audio Output"],"-1",[]]
Sep 29 11:57:17 alpha slim[1048]: [001:307] F->C: ["getdevicestate","15","0",["__default_device","HDA Intel MID, CX20585 Analog - Default Audio Device","HDA Intel MID, CX20585 Analog - Default Audio Device","HDA Intel MID, CX20585 Analog - Front speakers","HDA Intel MID, CX20585 Analog - 4.0 Surround output to Front and Rear speakers","HDA Intel MID, CX20585 Analog - 4.1 Surround output to Front, Rear and Subwoofer speakers","HDA Intel MID, CX20585 Analog - 5.0 Surround output to Front, Center and Rear speakers","HDA Intel MID, CX20585 Analog - 5.1 Surround output to Front, Center, Rear and Subwoofer speakers","HDA Intel MID, CX20585 Analog - 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers"],"0",["__default_device","HDA Intel MID, CX20585 Analog - Default Audio Device","HDA Intel MID, CX20585 Analog - Default Audio Device","HDA Intel MID, CX20585 Analog - Front speakers","HDA Intel MID, CX20585 Analog - 4.0 Surround output to Front and Rear speakers","HDA Intel MID, CX20585 Analog - 4.1 Surround output to Front, Rear and Subwoofer speakers","HDA Intel MID, CX20585 Analog - 5.0 Surround output to Front, Center and Rear speakers","HDA Intel MID, CX20585 Analog - 5.1 Surround output to Front, Center, Rear and Subwoofer speakers","HDA Intel MID, CX20585 Analog - 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers","HDA Intel MID, HDMI 0 - HDMI Audio Output","HDA Intel MID, HDMI 1 - HDMI Audio Output","HDA Intel MID, HDMI 2 - HDMI Audio Output"],"-1",[]]
Sep 29 11:57:17 alpha slim[1048]: [001:248] F->C: ["mf","mf4.6","4.6.3.0",2,{"audioCodecs":[[103,"ISAC",1,0,16000],[104,"ISAC",1,0,32000],[9,"G722",1,64000,16000],[102,"ILBC",1,13300,8000],[0,"PCMU",1,64000,8000],[8,"PCMA",1,64000,8000],[107,"CN",1,0,48000],[106,"CN",1,0,32000],[105,"CN",1,0,16000],[13,"CN",1,0,8000],[127,"red",1,0,8000],[126,"telephone-event",1,0,8000]],"audioRtpHdrExts":[{"id":1,"uri":"urn:ietf:params:rtp-hdrext:ssrc-audio-level"}],"camDeviceName":"Unknown Camera","caps":7,"cpuAdaptVersion":1,"cpuArchitecture":1,"cpuCacheSize":3145728,"cpuFamily":6,"cpuFlags":["sse2","ssse3","sse4_1","sse4_2"],"cpuHasSSE2":true,"cpuModel":37,"cpuSpeed":2667,"cpuStepping":5,"cpuVendor":"GenuineIntel","cpus":4,"cpusPhysical":2,"cryptoRandom":"Wh5rpjH5WwxrggyWxtWgghIM","cryptoSuites":["AES_CM_128_HMAC_SHA1_80","AES_CM_128_HMAC_SHA1_32"],"dataChannelVersion":1,"effectsVersion":10,"gpuDescription":"","gpuDeviceId":0,"gpuDeviceName":"","gpuDriver":"","gpuDriverVersion":"","gpuVendorId":0,"machineModel":"Not available","remotingAssistanceAllowed":0,"remotingVersion":1,"renderer":2,"rtcpMux":true,"screencast":2,"screencastLocalPreview":1,"supportsConcurrentSessions":true,"transports":["i","gice"],"videoCodecs":[[99,"H264-SVC",640,360,30],[97,"H264",640,360,30],[98,"H263",640,360,30]],"videoRtpHdrExts":[{"id":2,"uri":"urn:ietf:params:rtp-hdrext:toffset"},{"id":3,"uri":"http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time"}]}]
Sep 29 11:57:17 alpha slim[1048]: [001:206] F->C: ["mf","mf4.6","4.6.3.0",2,{"audioCodecs":[[103,"ISAC",1,0,16000],[104,"ISAC",1,0,32000],[9,"G722",1,64000,16000],[102,"ILBC",1,13300,8000],[0,"PCMU",1,64000,8000],[8,"PCMA",1,64000,8000],[107,"CN",1,0,48000],[106,"CN",1,0,32000],[105,"CN",1,0,16000],[13,"CN",1,0,8000],[127,"red",1,0,8000],[126,"telephone-event",1,0,8000]],"audioRtpHdrExts":[{"id":1,"uri":"urn:ietf:params:rtp-hdrext:ssrc-audio-level"}],"camDeviceName":"Unknown Camera","caps":7,"cpuAdaptVersion":1,"cpuArchitecture":1,"cpuCacheSize":3145728,"cpuFamily":6,"cpuFlags":["sse2","ssse3","sse4_1","sse4_2"],"cpuHasSSE2":true,"cpuModel":37,"cpuSpeed":2667,"cpuStepping":5,"cpuVendor":"GenuineIntel","cpus":4,"cpusPhysical":2,"cryptoRandom":"E8HMoakvNyHpWl2HL5jLZBgC","cryptoSuites":["AES_CM_128_HMAC_SHA1_80","AES_CM_128_HMAC_SHA1_32"],"dataChannelVersion":1,"effectsVersion":10,"gpuDescription":"","gpuDeviceId":0,"gpuDeviceName":"","gpuDriver":"","gpuDriverVersion":"","gpuVendorId":0,"machineModel":"Not available","remotingAssistanceAllowed":0,"remotingVersion":1,"renderer":2,"rtcpMux":true,"screencast":2,"screencastLocalPreview":1,"supportsConcurrentSessions":true,"transports":["i","gice"],"videoCodecs":[[99,"H264-SVC",640,360,30],[97,"H264",640,360,30],[98,"H263",640,360,30]],"videoRtpHdrExts":[{"id":2,"uri":"urn:ietf:params:rtp-hdrext:toffset"},{"id":3,"uri":"http://www.webrtc.org/experiments/rtp-hdrext/abs-send-time"}]}]
Sep 29 11:57:17 alpha slim[1048]: [2571:2594:0929/115717:ERROR:audio_manager_base.cc(422)] Not implemented reached in virtual std::string media::AudioManagerBase::GetDefaultOutputDeviceID()

[solved] Nautilus - high power consumption

Hello,
Can someone reproduce a very high power consumption with nautilus?
It keeps running although I have closed all windows and causes an enormous power consumption. This is what powertop reports:
4.67 W 942.2 ms/s 0.00 Process nautilus --new-window /home/orschiro/Downloads
I am running nautilus 3.8.2-1.
Last edited by orschiro (2013-10-09 12:29:32)

Hung thumbnail process? Can you try disabling thumbnails in Nautilus and see if this happens? Close all Nautilus' processes after making the change.

Iphone5 very high battery consumption after ios7 upgrade

Hi all,
i've upgraded my iphone5 to ios7. Since then the power consumption is very high. A full charged battery is empty over night (no apps running in backgroud) so the iphone is off in the morning.
Maybe a special reboot helps, but I don't know how todo?
Any ideas?
THX in advance!
Robby

btw: here's the ios battery thread, it did work for me after some updates and stopped "ranting" - so we may need to be patient, since apple NEVER tells something - I assume some weeks or 1 month, I am using a mophie battery / cover which helps a bit till then.. https://discussions.apple.com/message/21617916#21617916

Can't get rid of my high power consumption (Thinkpad X60 Tablet)

This is really driving me nuts. On Windows 7, I can achieve a power consumption of around 11-12W (with moderate web surfing usage over WLAN and full screen brightness, just Aero turned off).
On Arch, I can't get below 13W *ever* with full screen brightness, even without WLAN and any kind of computer usage besides running X11. And normal moderate web surfing usage (without Flash, mind you) brings it up to at least 17W.
The reason for this, I believe, is a really high number of wakeups from idle. powertop shows me at least 40 wakeups per second even when I don't have anything running besides X11. If I have Firefox, Thunderbird and Pidgin running, this climbss to at least 80 wakeups per second. Powertop shows the main cause for the wakeups in both cases to be "acpi" and "extra timer interrupt", as well as "Reschedulin interrupts". With those three applications running, there is additionally a high usage of "hrtimer_start_range_ns (tick_sched_timer)" and "iwl3945" (well, I guess the latter figures for internet applications).
I'm running laptop-mode-tools for power management, btw.
Anyone got some idea of what causes those idle wakeups, and how I might be able to fix it? I don't see why Windows 7 should be better than Arch here, the bloated monstrum it is...
Last edited by Natanji (2010-02-06 13:40:58)

The issue with hrtimer_start_range_ns is existing for a while. Unfortunately it isn't fixed until today. There is an entry in the kernel bugtracker http://bugzilla.kernel.org/show_bug.cgi?id=14424
I think this is the main reason for the short battery life of my Samsung NC10 . If you google for it you will find numerous posting in bugtrackers of various distributions but no one seems to really care or know how to fix this?

[Solved] High power consumption of eth0

Hi everyone,
i successfully installed Arch on my new Acer Travelmate P653-MG a few months ago with the Gnome DE. Everything worked fine until a few weeks ago, when i discovered a really hard power regression due to my network interface. Before i had a solid 12 W of power consumption (without that much of finetuning), but afterwards my power consumption jumped to 23-25 W. I have attached two screenshots of my current powertop output:
http://i.imgur.com/8tpSnXf.png
http://i.imgur.com/CaVg61A.png
Unfortunately i can't quite say when this regression occured, so as to point to a certain update. My first guess was, this had to be kernel specific, but the downgrade from kernel 3.7 to 3.6 brought no results. I must admit after hours of searching google, the arch wiki and the forum here, i'm at a complete loss. I have discovered no one with a similar problem.
If anyone can help me in this matter, your help would be very much appreciated!
My current kernel parameters are: quiet splash nmi_watchdog=0 acpi_osi=linux acpi_backlight=vendor
Please tell me any outputs i can provide which could be of help to you.
Greetings
-- mod edit: read the Forum Etiquette and only post thumbnails http://wiki.archlinux.org/index.php/For … s_and_Code [jwr] --
Last edited by ToshiroTaicho (2013-02-16 22:08:07)

Thanks for your suggestions, but i was finally able to figure it out myself. linux-lts was unfortunately no option for me, as i want to use bumblebee. But the direction, this pointed me to was good. It seems one of the kernel updates broke my bumblebee package, so the power management didnt work and the card was constantly powered on. This was nothing new, but my powertop completely messed it up, by adding this additional power consumption to eth0. Funny enough, this power consumption even disappeared, when i unloaded eth0. After deleting powertops saved results and recalibrating it, it now shows up all components power usage correctly.
Thus i mark this thread as SOLVED.

[SOLVED] Huge power consumption after kernel upgrade.

Dear All,
I have recently bought the new lenovo thinkpad X1 equipped with a Core I5 processors and 4GB of RAM.
I am quite satisfied with this machine except for the fact that the fan is extremely loud (but perhaps a bios upgrade will fix problem).
Now my problem:
When I first installed Arch (first days of August) I ran powertop and the power consumption was around 10 Watts when idle with wifi card turned off.
Now, after some upgrades, the power consumption raises to 18W in idle and consequently the battery lasts less than 2h.
Here my current configuration:
Linux think-x1 3.0-ARCH #1 SMP PREEMPT Tue Aug 30 08:53:25 CEST 2011 x86_64 Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz GenuineIntel GNU/Linux
and here the powertop output obtained with the cpu frequency governor set to "On demand":
Cn Avg residency P-states (frequencies)
C0 (cpu running) ( 5.3%) Turbo Mode 0.1%
polling 0.0ms ( 0.0%) 2.50 Ghz 0.0%
C1 mwait 0.2ms ( 0.1%) 2.21 Ghz 0.0%
C2 mwait 0.3ms ( 0.0%) 1200 Mhz 0.1%
C3 mwait 2.4ms ( 0.0%) 800 Mhz 99.8%
C4 mwait 13.1ms (94.6%)
Wakeups-from-idle per second : 76.1 interval: 3.0s
Power usage (ACPI estimate): 15.7W (2.8 hours)
Top causes for wakeups:
46.5% (135.7) kworker/0:0
17.7% ( 51.7) PS/2 keyboard/mouse/touchpad interrupt
11.9% ( 34.7) [kernel scheduler] Load balancing tick
8.6% ( 25.0) [iwlagn] <interrupt>
2.9% ( 8.3) [i915] <interrupt>
2.6% ( 7.7) [acpi] <interrupt>
1.8% ( 5.3) chromium
1.6% ( 4.7) [kernel core] hrtimer_start (tick_sched_timer)
1.5% ( 4.3) kworker/0:1
0.7% ( 2.0) minilogd
0.7% ( 2.0) [kernel core] iwl_bg_watchdog (iwl_bg_watchdog)
0.6% ( 1.7) X
0.6% ( 1.7) [kernel core] intel_gpu_idle_timer (intel_gpu_idle_timer)
0.3% ( 1.0) Terminal
0.3% ( 1.0) [kernel core] tpt_trig_timer (tpt_trig_timer)
0.2% ( 0.7) [mmc0, mei, ehci_hcd:usb3] <interrupt>
0.2% ( 0.7) upowerd
0.1% ( 0.3) init
0.1% ( 0.3) gpg-agent
0.1% ( 0.3) [kernel core] ieee80211_sta_reset_conn_monitor (ieee80211_sta_conn_mon_timer)
0.1% ( 0.3) wicd-client
0.1% ( 0.3) kworker/u:3
0.1% ( 0.3) watchdog/0
I have also tried to disable most of the running daemons and unload some modules, but I have never got less than 14/15W when idle, which in my opinion is definitely too much!
As far as I'm concerned, the kworker process is responsible most of the wakeups.
Any ideas?
Last edited by jacopo_c (2011-09-05 13:12:16)

pogeymanz wrote:I read somewhere that the kernel devs really don't see this as an issue. They just expect that laptop owners should know to try these boot parameters. So, definitely not by 3.1.
from https://bugzilla.redhat.com/show_bug.cgi?id=727579:
Dave Jones 2011-08-03 15:32:21 EDT
enabling it by default in 3.0 caused regressions for some people, so it was
disabled. Hopefully Intel figures it out, and we can switch it back on by
default in 3.1 / 2.6.41 (until then, you'll have to set it by hand).
Interesting stuff, also recommend this thread on phoronix:
http://phoronix.com/forums/showthread.p … Regression
Last edited by masteryod (2011-09-12 00:30:00)

Dramatically raised power consumption after OS upgrade

Hello,
I have model 8820, and after I upgraded OS version to 4.5
using this sw: 8820M_PBr4.5.0_rel75_PL2.7.0.66_A4.5.0.52_Orange_Slovakia.exe
power consumption of my BB raised dramatically (it is 1 day between charging instead of 6 days with previous OS version)
also when I use BB regularly appears (each ~3 minutes) wait cursor for ~2 seconds
Can anybody help with this?
thanks

This is very unusual from 6 days to 1 day!!! It should not be as such.
From where did you receive the OS? Is it from your carrier's OS download site?
tanzim
If your query is resolved then please click on “Accept as Solution”
Click on the LIKE on the bottom right if the post deserves credit

High power consumption of CC

I have file sync disabled in the Create Cloud settings. How ever, it does consume power, as you can track in the Activitiy Monitor.
Here is a screenshot: http://666kb.com/i/cm0giry030kkwl9w2.jpg

Thanks for your suggestions, but i was finally able to figure it out myself. linux-lts was unfortunately no option for me, as i want to use bumblebee. But the direction, this pointed me to was good. It seems one of the kernel updates broke my bumblebee package, so the power management didnt work and the card was constantly powered on. This was nothing new, but my powertop completely messed it up, by adding this additional power consumption to eth0. Funny enough, this power consumption even disappeared, when i unloaded eth0. After deleting powertops saved results and recalibrating it, it now shows up all components power usage correctly.
Thus i mark this thread as SOLVED.

Has anyone experienced graphical problems and high power consumption while hibernating after upgrading to Mavericks?

Since I've upgraded to OS 10.9 my Macbook Pro 2.4GHz started doing strange things. It consumes large amounts of Power. The battery draines much faster than before in normal usage and even worse... it consumes quite a bit power while its alseep. A fully charged battery looses over night (hibernating) 30% of its capacity.
Secondly... the Mac takes ages to startup. Opening Apps and Aplications takes longer than under OS 10.8
Worst though is the grphical issue. My MacBook keeps on giving me funny patterns aroud openend windows and Ikons. A restart fixes the problem for a while, but it keeps comig back more and more frequently. Here is a screenshot:
Has anyone else come acorss these problems. Any sugestions what to do?!

Doesn't matter if the symptoms don't match. You've got an affected machine, and your graphics card could easily be in the early stages of failure. You definitely need to get it checked out by Apple.
Regarding the battery, some people are claiming battery problems with Mavericks, but I haven't seen any evidence of that. My machine's battery life is the same as it was before the upgrade. My guess would be that the sufferers, such as yourself, have other issues, such as a coincidentally failing battery, third-party software incompatible with Mavericks or a corrupt system. For all I know, the hardware problems you are likely having with your graphics card may be causing the card to draw too much power and reduce battery life. Since you need to get your machine looked at by Apple anyway, have them check the battery as well.

Extreme power consumption after upgade to10.3.1.1581

After upgrading tried new features regarding picking up phone and activating screen, battery would drain after 4 hours, of limited use. Checked device utilization, BlackBerry blend at 50% utilzation. Disabled the new features, and dimmed screen. Seems to be behaving normally now. Did not enable BlackBerry blend just went into app to see what it was.

Hi and Welcome to the Community!
As with all updates, resource consumption will be unusually high for the first 48-72 hours, after which it normally settles down and behaves properly. Sometimes, a few hard reboots during that timeframe help it along. But, any judgement about resource consumption must be held off until after that initial settling in period has passed.
Good luck!
Occam's Razor nearly always applies when troubleshooting technology issues!
If anyone has been helpful to you, please show your appreciation by clicking the button inside of their post. Please click here and read, along with the threads to which it links, for helpful information to guide you as you proceed. I always recommend that you treat your BlackBerry like any other computing device, including using a regular backup schedule...click here for an article with instructions.
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[SOLVED] Vaio power usage after suspend/resume cycle

Hi,
I came to the conclusion my laptop (Sony Vaio VPCSB36FG/B) suffers from one particular issue:
After a suspend/resume cycle, the discrete card in the laptop (Radeon HD6470M) is powered on again, although /sys/kernel/debug/vgaswitcheroo/switch still reports the contrary.
This explains why the laptop is using ~5W more after a suspend/resume cycle. I can blacklist the radeon module on boot, but then the discrete card is powered on when the laptop is started. And since the module is blacklisted, there is no way to disable the card using vgaswitcheroo.
Unfortunately, blacklisting the module (on boot) and manually loading the module after boot, then switching the card off (using vgaswitcheroo) and removing the module results in either a display driver crash or the message: "radeon module is in use".
For the record, I'm using the open source driver for both cards (i915 & radeon).
My guess is, the only way to prevent the card from being powered on after a suspend/resume cycle is to make sure the radeon module is not enabled at all before suspending the laptop, but I'm wondering how to achieve this.
Any suggestions please?
Last edited by LordChaos73 (2013-01-16 20:48:21)

Okay, this workaround seems to work, at least manually:
1. Before suspending, the discrete card should be powered on (suspending seems to be a little slower now):
echo ON > /sys/kernel/debug/vgaswitcheroo/switch
2. After resume, one is able to turn off the discrete again:
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
Now I just need to figure out how to automate this in a nicely fashion.
Last edited by LordChaos73 (2013-01-16 20:49:06)

Home Broadband Fusion Typical High Power Consumption

Question: Has anyone noticed just how much power (watts) the Verizon outside Cantenna and HBR router consume if left on continuously, even while you are not using it?
Fact: I took a measuring device and finding the outside attenna and router plug-ins consumer over 130 watts if continually left on. But what makes matter worse is there is no indication when you sign up this very little known fact.. so.. left on an average consumer burns about the same amount of electricity with the antenna and router as a small kitchen refrigerator or about 6-7 KWH (Kila-Watt Hours) per day.. if your electricity rates are .12 cents per KWH then it costs about 75 cents a day or 23 dollars in a month to power just these devices..
What to do? - TURN OFF when not in use or completely power down. The down side is are there side effects by doing so?
Somebody should launch a complaint to Verizon and to consumer affairs for not being obligated to advertising these facts (it would sort of be like buying a car and not knowing what kind of gas milage you would be getting).
Most folks using these products should see an obivous jump in their regular electric bills.

germantown wrote:
Question: Has anyone noticed just how much power (watts) the Verizon outside Cantenna and HBR router consume if left on continuously, even while you are not using it?
Fact: I took a measuring device and finding the outside attenna and router plug-ins consumer over 130 watts if continually left on. But what makes matter worse is there is no indication when you sign up this very little known fact.. so.. left on an average consumer burns about the same amount of electricity with the antenna and router as a small kitchen refrigerator or about 6-7 KWH (Kila-Watt Hours) per day.. if your electricity rates are .12 cents per KWH then it costs about 75 cents a day or 23 dollars in a month to power just these devices..
You're math is off. 130 watts means it uses 130 watts per hour that's 3120 watts in a day or 3.12 kW. Or 93.6 kW in a month. At 12 cents per kW that's $11.23 a month not $23. Also you assume it uses that much electricity 24/7
Also new refrigerators even large ones use maybe $6 a month in electricity.

High power comsumption and wrong setting when waking up from sleep

See here for some more information: http://forums.lenovo.com/t5/Windows-7-RTM-Discussion/High-Power-Consumption-with-Windows-7/td-p/1668...
Settings: T400, integrated GPU,"maximum battery live" power sheme, brightness level 3, wlan on. Newest switchable graphics driver, power manager and power management drivers installed, SU4 didn't find newer drivers.
Power consumption is between 12-16W most of the time, whereas it was close to 10W on XP, from what i heard from a friend, i installed win7 on my machine right after i bought the thinkpad.
When waking up from sleep( i think hibernation as well) power consumption is abnormal, because both GPUs are activated. You have to switch to to the dedicated and back to the integrated via power manager to deactivate the ATI, which is very annoying.
Is lenovo working on these issues or are there any workaroungs already?

I've got similar problems on a T400 with hybrid graphics running Windows 7 x64 Professional, upgraded from Vista x64 Professional. I've upgraded everything to the latest (driver, bios, etc etc) using System Update.
When I boot up from cold, and switch to using batteries, the power consumption is around 8w. Very good.
Then I suspend, and resume from suspend, and the power consumption shoots up to like 20w. Horrible.
Then I manually switch to "High performance" and then back to "Energy saving", the power consumption comes back down, but to >9w, which is like 13% above the original 8w level. Acceptable, but not good.
This seems to indicate there're at least two problems with the power management aspect of T400 + Win7 x64:
First, there is the well-known problem that both internal and external graphics cards get turned on upon resume. Lenovo, please fix this problem. It's completely unacceptable to have to manually perform that switching every time one closes, and then opens the lid, or loss 60% of the battery life. And I do need to use the external GPU from time to time, so disabling it at BIOS level is not acceptable either.
Second, there is the more subtle problem that some other hardware/driver besides the graphics card makes the T400 draw an extra >1w upon resume.
I really wonder if these problems occur with T400 preinstalled with Win7 x64. If they do, shouldn't every major laptop review sites take notice of the defect and warn people. If they don't, then I do not really see why it's so hard for Lenovo to provide earlier users with the right driver/registry patch/etc to enable the correct behavior. As far as I know, these problems have not been fixed since Win7 came out.
Finally let me add that other that this, I'm extremely satisfied with my T400/Win7 system. The thermal dissipation, noise level, and durability are just top-notch. But this just makes the above mentioned problems more of a thorn in the side!

Webcam not entering low-power mode after resume

Can other W520 owners with a webcam (and potentially other models) confirm whether or not the camera prevents the USB subsystem from entering low power mode?
1) Unplug all USB peripherals, and turn off Bluetooth (this runs on USB as well)
2) Put the system into standby, unplug the AC adapter, and resume the system on battery.
3) Load a Command Prompt and run powercfg -energy
4) Load the generated report and look for the following:
The most noticeable issue caused by this is unnecessarily high power consumption, and as a result, lower battery life.
Turning the camera on and off (using the Fn=F6 preview window) turns this off and returns power consumption to normal.
On the latest available BIOS, chipset, and camera drivers.
Would like someone to confirm whether this is a driver issue or if it's just my system.
W520: i7-2720QM, Q2000M at 1080/688/1376, 21GB RAM, 500GB + 750GB HDD, FHD screen
X61T: L7500, 3GB RAM, 500GB HDD, XGA screen, Ultrabase
Y3P: 5Y70, 8GB RAM, 256GB SSD, QHD+ screen

I have a very similar spec also. The pair of U2410's (updated revision A01) connected to it won't go into sleep mode (just go black, with backlight still on).
The pair of cheapie BenQ 2420HD's I had connected while I waited for the Dells went into sleep mode fine.
Someone on another forum noted that they had a different model Dell on Mac with the same problem, and he found it only happened when the USB uplink cable was connected to the Mac. I disconnected mine (uplink and down), but no change unfortunately.
Google searching seems to suggest this is almost exclusively only with a Dell/Mac combo (same monitor on PC works fine and other brands on Mac work fine). These U2410 monitors get an absolute bagging on most forums, and I think most of it is deserved. These will both be going back for a refund with severe blue/pink tints making them visually perform worse than the BenQ's that were 1/3 the price. What's the point of spending 2 to 3 times the amount on IPS monitors when they're off colour even right in front of them!
The HP 24" IPS uses the same crap LG panel as these Dells, I can't justify 2 x 30" Apple Cinema displays for AU$5000, and one just won't cut it. No simple answer it seems....
Cheers
Dav

Higher power consumption after suspend

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