Tecra R840 - Win8 - power consumption in hibernate mode

Hello,
i did the offered upgrade to W8, i am very satisfied with the W8 system, but the problem is that the notebook is consuming battery also in the hibernate mode.
I would understand that the power consumption will be in the sleep mode, but on the hibernate mode?
I found out that when the computer enters the sleep mode or hibernate mode and i open the lid, the computer automatically starts EVEN if the option to "power up computer when lid open" is unchecked.
When i select to power off computer - it does not react to open lid, i have to press the power button.
The problem could be in the windows system, that the OS tolds the computer to wake up when the lid closed.
The problem is, that the computer starts charging everytime i wake up from hibernation (i had my office 15minutes from home, and it consumes about 1-2% from battery.
It is quite anoying that my full charge battery capacity is on 83% of original one (i bought my PC in June2012).
I had Lenovo T60 7yrs ago, and there was an option to start charging the battery only when the battery charge was under 95% and it saves the battery capacity.
Does anybody have some clue?
Thank you!

Fact is that battery capacity will be reduced even if the notebook is completely OFF. Battery capacity will lose few percent of capacity. To reduce this check - http://aps2.toshiba-tro.de/kb0/FAQ9C015N0001R01.htm
Useful document for you can be also http://aps2.toshiba-tro.de/kb0/HTD9401AZ0001R01.htm
> I had Lenovo T60 7yrs ago, and there was an option to start charging the battery only when the battery charge was under 95% and it saves the battery capacity.
As far as I know such option is not available on Toshiba notebooks. When connected to AC power supply notebook starts to load battery automatically.
There is no option to change anything.

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Message Edited by GMAC-R60 on 08-08-2009 12:38 PM
Thinkpad R61 7733-1GU
Thinkpad X61T 7762-54U
Thinkpad X60T 6363-4GU
Did a member help you today? Thank them with a Kudo!
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Regards,
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Actual power consumption on WS-C6509-E

Hello everyone,
I have a WS-C6509-E with two WS-CAC-6000W power supplies. I have to determine what is the real power consumption of the whole device but I noticed that there is a mismatch between measurements and show power output so I would very much appreciate if someone could explain why is that so.
I did the following test to try figure out the consumption from the power grid.
Step 1. When both supplies are active, show power gives me the following output:
C6509Test#show power
system power redundancy mode = redundant
system power total =     5771.64 Watts (137.42 Amps @ 42V)
system power used =      2253.72 Watts (53.66 Amps @ 42V)
system power available = 3517.92 Watts (83.76 Amps @ 42V)
                        Power-Capacity PS-Fan Output Oper
PS   Type               Watts   A @42V Status Status State
1    WS-CAC-6000W       5771.64 137.42 OK     OK     on
2    WS-CAC-6000W       5771.64 137.42 OK     OK     on
                        Pwr-Allocated Oper
Fan Type               Watts   A @42V State
1    WS-C6509-E-FAN      150.36 3.58 OK
                        Pwr-Requested Pwr-Allocated Admin Oper
Slot Card-Type          Watts   A @42V Watts   A @42V State State
1    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
2    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
3    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
4    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
5    VS-S720-10G         338.10 8.05   338.10 8.05 on    on
6    VS-S720-10G         338.10 8.05   338.10 8.05 on    on
7    WS-X6724-SFP        125.16 2.98   125.16 2.98 on    on
system auxiliary power mode = off
system auxiliary power redundancy operationally = non-redundant
system primary connector power limit =   10920.00 Watts (260.00 Amps @ 42V)
system auxiliary connector power limit = 10500.00 Watts (250.00 Amps @ 42V)
system primary power used =              2253.72 Watts (53.66 Amps @ 42V)
system auxiliary power used =            0 Watt
Step 2. Then I switched off power supply 1:
C6509Test#
*Jan 22 09:29:21.753: %C6KPWR-SP-4-PSOUTPUTDROP: Power supply 1 output has dropp
ed
*Jan 22 09:29:21.769: %C6KPWR-SP-2-PSFAIL: power supply 1 output failed.
*Jan 22 09:29:21.769: %C6KPWR-SP-4-PSREDUNDANTONESUPPLY: in power-redundancy mod
e, system is operating on one power supply.
C6509Test#
C6509Test#show power
system power redundancy mode = redundant
system power redundancy operationally = non-redundant
system power total =     5771.64 Watts (137.42 Amps @ 42V)
system power used =      2253.72 Watts (53.66 Amps @ 42V)
system power available = 3517.92 Watts (83.76 Amps @ 42V)
                        Power-Capacity PS-Fan Output Oper
PS   Type               Watts   A @42V Status Status State
1    WS-CAC-6000W       3780.00 90.00 -      -      off
2    WS-CAC-6000W       5771.64 137.42 OK     OK     on
                        Pwr-Allocated Oper
Fan Type               Watts   A @42V State
1    WS-C6509-E-FAN      150.36 3.58 OK
                        Pwr-Requested Pwr-Allocated Admin Oper
Slot Card-Type          Watts   A @42V Watts   A @42V State State
1    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
2    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
3    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
4    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
5    VS-S720-10G         338.10 8.05   338.10 8.05 on    on
6    VS-S720-10G         338.10 8.05   338.10 8.05 on    on
7    WS-X6724-SFP        125.16 2.98   125.16 2.98 on    on
system auxiliary power mode = off
system auxiliary power redundancy operationally = non-redundant
system primary connector power limit =   10920.00 Watts (260.00 Amps @ 42V)
system auxiliary connector power limit = 10500.00 Watts (250.00 Amps @ 42V)
system primary power used =              2253.72 Watts (53.66 Amps @ 42V)
system auxiliary power used =            0 Watt
Step 3. Now I disconnect the power input 1 on running power supply 2 thus leaving the device working on only one out of four power inputs:
C6509Test#
*Jan 22 09:35:50.297: %C6KPWR-SP-4-INPUTCHANGE: Power supply 2 input has changed
. Power capacity adjusted to 2671.20W
*Jan 22 09:35:50.297: %C6KPWR-SP-4-PSOUTPUTDROP: Power supply 2 output has dropp
ed
C6509Test#show power
system power redundancy mode = redundant
system power redundancy operationally = non-redundant
system power total =     2671.20 Watts (63.60 Amps @ 42V)
system power used =      2253.72 Watts (53.66 Amps @ 42V)
system power available = 417.48 Watts ( 9.94 Amps @ 42V)
                        Power-Capacity PS-Fan Output Oper
PS   Type               Watts   A @42V Status Status State
1    WS-CAC-6000W       3780.00 90.00 -      -      off
2    WS-CAC-6000W       2671.20 63.60 OK     OK     on
                        Pwr-Allocated Oper
Fan Type               Watts   A @42V State
1    WS-C6509-E-FAN      150.36 3.58 OK
                        Pwr-Requested Pwr-Allocated Admin Oper
Slot Card-Type          Watts   A @42V Watts   A @42V State State
1    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
2    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
3    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
4    WS-X6748-GE-TX      325.50 7.75   325.50 7.75 on    on
5    VS-S720-10G         338.10 8.05   338.10 8.05 on    on
6    VS-S720-10G         338.10 8.05   338.10 8.05 on    on
7    WS-X6724-SFP        125.16 2.98   125.16 2.98 on    on
system auxiliary power mode = off
system auxiliary power redundancy operationally = non-redundant
system primary connector power limit =   10920.00 Watts (260.00 Amps @ 42V)
system auxiliary connector power limit = 10500.00 Watts (250.00 Amps @ 42V)
system primary power used =              2253.72 Watts (53.66 Amps @ 42V)
system auxiliary power used =            0 Watt
C6509Test#
*Jan 22 09:37:22.317: %C6KPWR-SP-4-INPUTCHANGE: Power supply 2 input has changed
. Power capacity adjusted to 5771.64W
*Jan 22 09:38:58.523: %C6KPWR-SP-4-PSOK: power supply 1 turned on.
*Jan 22 09:38:58.535: %C6KPWR-SP-4-PSREDUNDANTBOTHSUPPLY: in power-redundancy mo
de, system is operating on both power supplies.
C6509Test#
Step 4. I used the current clamp to measure the current on the remaining power input and it reads 4.9 A.
When I multiply the current with voltage I get
P=4.9*230=1127 W.
So why does the show power output gives system power used = 2253.72 Watts, which is actually double value of measured 1127 W? What am I missing?
Thank you in advance for any help on this,
Marin

marin_otto.
Where are you located and what AC line voltage are you operating on (208 or 230v)? I ran into your post and was wondering if you were operating on 208v which is line to line (two hots) and perhaps you are only measuring current on one line, effectively half the power.
Dave

MacBook Power Consumption

We operate tens of macbooks at our campus for student loans. We are trying to cut on the power consumption of the loans operation. I am interested to know how much power does the power brick consume when:
a) nothing is connected to the MagSafe jack.
b) the macbook is fully charged and the LED is lit green.
Please don't guess or think! give me a firm answer if you know. I appreciate that!

I pulled out my 1940s era General Electric Wattmeter. This is a two-coil instrument that measures Vrms * Irms * cos( phase angle) = actual Watts. This type of meter does not measure reactive power that does not deliver energy to the load but circulates in the system. Reactive power is a concern because the out-of-phase current of reactive power does cause energy loss (I squared R loss) by heating the wires carrying the current.
Power brick energized, but not attached to computer - unmeasurable.
Power brick energized, attached to computer, green LED on - about 0.7 Watt.
Power brick energized, attached to computer, OSX booted, but idle - 8 to 10 Watts.
Power brick energized, attached to computer, screen saver running - 8 - 12.5 Watts.
Power brick energized, attached to computer, 5th Element DVD playing - 12.5 -15 Watts.
Power brick energized, attached to computer, Grapher, contours.gcx - 18.5 - 20.5 Watts.
Once in a while, I could get the MacBook to peak at about 25 Watts (averaged by the mechanical dynamics of my meter) of power consumption. The initial plug-in of the power pack to the socket also consumes several amps for a split second - too hard to measure accurately with my crude equipment. There's also a little audible crack! as the prong touches the outlet, so it is obviously a pretty large momentary in-rush of current.
When the power brick is unplugged, the Irms current draw is about 22 mA according to my Fluke 8060A. Presumably that's almost all reactive at close to -90 degrees phase angle relative to the voltage. Switch mode power packs like the MacBook's tend to be capacitive loads. That's about 2.64 VARs of reactive power.
When the MacBook is idling at about 9.5 Watts of real power consumption, the current draw is about 245 mA. The real power corresponds to about 70 mA of in phase current. This gives the surprising result of about 234 mA of lagging reactive current.
In terms of what real-world thing can you do? For 10 to 100 MacBooks, I don't belive it is worthwhile to do anything. Probably remediating the power supply to reduce the reactive current load would be good thing. At industrial scales, factories worry about current phase angle a lot. Power providers bill for reactive current they have to generate, otherwise they would lose revenue by heating their transmission lines, but the customer gets no energy delivered to the manufacturing process by the out-of-phase reactive current.
Probably, the energy consumed and eventual environmental waste generated by remediating 10-100 power supplies, not to mention the engineering hours required, would not offset the power that would be saved over the useful life of the MacBook.
On the other hand, grumbling at Apple to contract with the manufacturer for a greener design for the power pack for the many thousands of users would be a good thing on which to expend a little energy.
PS: just to be sure my Wattmeter is giving reasonable results, I plugged in a "60 Watt" bulb that's been used for about 200 hours. According to the meter, it draws 58 watts.
Bill
Message was edited by: impulse_telecom

Power Consumption Revisited

I was reading an article on tomshardware.com the other day in which they described a process by which they were able to measure the power consumption of various video cards using a simple device that plugs into a standard wall socket and then displays the number of watts the currently plugged in device is using. In light of the ever-increasing PSU recommendations that tend to show up here (I recall seeing one poster recommend "a PSU with 24 or more amps on the +12V rail for anything other than a barebones system"), I decided that it might be beneficial to these forums if I did a little empirical study of my own. So anyways, I shelled out ~$30 for the device shown here:
http://www.supermediastore.com/kilwateldet1.html
...and ran some tests of my own. The results:
Preliminary Testing -
To verify that my power meter would give reasonably accurate readings, I first hooked it up to a 3-way lamp with a 50/100/150 watt bulb installed. The readings returned for the 50/100/150 watt settings (respectively) were 44/94/142, so it would seem like my power meter is at least reasonably accurate. Some other stuff I measured just for the hell of it...my speakers use 3 watts of power in stadby mode, and 30 watts when active (haven't yet tested when active and playing at full volume), and my monitor uses about 70 watts when on, and about 2 watts in standby mode.
Results -
Satisfied that I had not just wasted my money on an inaccurate power meter, I then went and hooked it up to my PC (the one described in my sig) and measured the power consumption under a variety of circumstances. It is important to note that these readings reflect the total amount of power drain being applied to the wall socket, not the amount of power that is actually being demanded by the system. This is because no PSU is 100% efficient (a good one will be maybe 80% efficient, if even that much), so the amount of power that is actually needed by the system is actually about (at least)20% *less* than the recorded values. Anyways:
During startup, the power usage spikes very briefly at 197 watts, then averages 152 watts over the rest of the boot cycle.
The system uses 134 watts of power when idling.
Under full CPU load, the system uses 168 watts.
Running 3d Mark 2001 the power usage is 169 watts.
Playing Far Cry (high detail settings, 1024x768x32), the power usage is again 169 watts.
Conclusions -
So, let's now assume a worst-case scenario, in which the extra 34 watts recorded during full CPU load came entirely from extra CPU power drain (a reasonable assumption), and in which the extra 35 watts recorded during 3d Mark and Far Cry came entirely from extra video card load (a much less reasonable assumption), and in which we have a PSU that is 90% efficient (greater efficiency means that the system would actually have to demand *more* power in order to get the total power drain up that high). In this case we see that if an application were developed that fully taxed the video card and CPU continuously, the total power drain would be 134 + 34 + 35 = 203 watts (which actually correlates rather nicely with the 197 watt spike observed during the boot cycle), meaning that the system is demanding about 183 watts from our unrealistically efficient PSU (note that with the PSU efficiency set to a more realistic 75%, the system would only be demanding a mere 153 watts of juice at full CPU and video card load).
Admittedly, the video card in my system is relatively weak, so let us again take the worst case scenario and assume that if I were to be using a 6800 Ultra, the total power drain would be 100 watts greater (this is above what the actual difference should be given the results posted on tomshardware.com regarding the power use of the 6800 Ultra), so our video card now consumes an astounding 135 watts of power, and our total power drain (in our unrealistic situation where we have some application which is capable of 100% CPU and video card utilization for a sustained length of time) is now 303 watts. With our unrealistic 90% efficient PSU, it would mean that the system is demanding about 273 watts from the PSU (about 228 watts with a 75% efficient PSU).
Note that aside from the weak video card, I have a fairly robust system (which also happens to be slightly overclocked), with 4 HDD's (two of which are WD Raptors), 2 optical drives, several PCI devices, and two large 120mm case fans, and yet the power demands of this system, even in an unrealisticly demanding situation, are *well* within the ability of a quality 380W (or even 300W) PSU to deliver. In this case even if all the power happened to be being sucked off of the +12V rail (which is not the case), any PSU with 18 amps at +12V could still handle it. Furthermore, even if I were to add a needlessly power-hungry video card into the mix, the power demands are *still* safely within what any decent 380W PSU should be capable of (and even what a quality 300W PSU should be capable of, although this may be pushing it a little, though it should always be noted that the numbers indicate a hypothetical worst-case power drain that should be beyond the maximum drain possible in any real-world situation).
So, we can therefore conclude that the power demands of a reasonably robust Athlon64 based system are not astronomical by any means, and that they do not justify a minimum recommendation of a 465W PSU with 24+ amps on the +12V rail for any system which is not "barebones," and that there is no observational evidence to support the idea that a PSU with 18 or fewer amps at +12V is categorically inadequate for use in an Athlon64 based system.
...anyways, I guess that's all, I hope you found this interesting, or at least informative. I'm off to see what else I can do with my power meter thingy...

Really? Do you have measured data which clearly supports your claims, or are you just holding up an opinion as a matter of fact?
My point was, my measured results show that the total power demand of an Athlon64 based system across *all* of the rails is fairly low, even at 100% system load. So, let's recalculate things assuming a 75% efficient PSU, with 75% of all load being at + 12V (which is still probably higher than the actual value), and let's leave the hypothetical 6800U inside of my system. We get .75 * 303 = 227 watts in total that the system is demanding. Of these 227 watts, the system is demanding .75 * 227 = 170 watts over the +12V rail. 170 watts / 12V gives us a total demand of 14.2 amps on the +12V rail. Note that this is with the hypothetically demanding 6800U card installed and is still likely to be at least a couple amps higher than what a *real* system would ever use, and any *quality* PSU capable of 18 amps at +12V should still be perfectly adequate for use in the system.
Furthermore, PSU efficiency dropping to 60% in real world situations supports my results, as it means that the actual system was demanding substantially *less* power than the system in my hypothetical example, making things even *easier* for the PSU. Re-running the above equation with a 60% efficient PSU and 75% of all power demand coming from the +12V rail, we see that the system is only asking for 11.4 amps at +12V at full load with a 6800U installed (and also at full load).
If you want to disagree with my results, that's fine, but don't expect me to take your argument as credible unless you have some actual, measurable data to back up your claims. Saying "this is the way things *really* work because I say so" doesn't cut it, so until you want to break out a multimeter and measure the amps your PSU delivers to the MB on the +12V rail at boot, idle, load, and gaming and then report your results and discuss whether or not they are consistent with your "amps are what counts" hypothesis, I hold my results and conclusions up as being valid, and as soon as I see any measured results which contradict mine, I will gladly stfu about PSU recommendations being needlessly high.

Power consumption of Time Capsule in standby

Hi
Just wondering if there is some kind of standby mode on the Time Capsule, which stops the harddrive when it's not in use - in other words, when I'm only using the route functionality of the Time Capsule?
Furthermore: what's the power consumption of the Time Capsule in standby mode? I know that apple stats a max of 30Watts, but at the end of the day that turns out to be quite a lot of money if you only use the harddrive while home playing music or making a backup.
Kind regards
Jens

I've spoken to Apple support regarding these questions.
If you are using Time Capsule to back up the data on your computer(s), the hard drive is only spinning during the back up process. If you are listening to music or watching video stored on the Time Capsule, the disc will of course be spinning during this time.
When the Time Capsule disc is not spinning and the unit is providing router and wireless functions, the Time Capsule is using approximately 10 Watts of power.

Power consumption with dual power supply

Hi,
I need to know how dual power supply works, I mean, when you have two power supplies in a router if both of them are working at the same time, or if one of them is working while the other one only begin to work when the first one stops.
And if both of them are working at the same time, what is the power consumption, the same as if only one of them was working?
Thanks

marianares0001 wrote:Hi,I need to know how dual power supply works, I mean, when you have two power supplies in a router if both of them are working at the same time, or if one of them is working while the other one only begin to work when the first one stops.And if both of them are working at the same time, what is the power consumption, the same as if only one of them was working?Thanks
The implementation details can potentially differ per product category but usually the following is applicable:
The product provides configurable power redundancy modes and choosing a mode dictates whether load will be shared across supplies or whether a particular supply will be dedicated for redundancy.
If both (or more) supplies are working at the same time then both share the power load.
The actual power consumption depends on the power required to run the installed components and is the same whether you use power supplies in redundant or power sharing mode.
Atif

Power consumption for 7100?

Hi:
Does anybody know what is the power consumption of the 7100 series device in the 'idle' mode and 'call' mode?
Can not seem to find this information....
Thank you

Welcome to the discussions!
Another vote for APC. I use the XS900 for my first gen G5 iMac and it works very nicely without their PowerChute software. It even comes with the correct USB cable to hook it into your Mac.

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?

Power consumption when PowerOFF: 24" iMac 2009

I really wonder about my iMac 2009 Modell: when using sleep mode I got 11-12 watts power consumption. But when shutting down the iMac (Power Off in Apple Menu), the same iMac takes 10 watts
Is this normal and how can I get sleep mode with far less or none watts?

I'm having the same thing with my 2008 24 inch iMac. I'm not sure if it is the hard drive or one of the fans, but there is a loud WHOOSH every time it starts up or wakes from sleep and the whirring noise is pretty much constant. It used to be completely silent, so this new sound is very noticeable.
Lately, the noise with abruptly stop and then make a struggling sound as if whatever is causing it is either going away or making it stop revolving or whatever (it would help if I could determine exactly WHAT is making the noise). I check iStat, but can't see any wide variance in the fans rpm speeds when it is happening or the heat of various components spiking. It is not affecting my computer use as it did the first time I had a similar problem (which turned out to the the hard drive, since replaced under warranty).
I bought Apple Care for this computer, so it is still covered under that, but I don't know if the fact that the noise is completely annoying to listen to all day is enough reason to bring it in for service and be covered under the extended warranty.

Tecra R840 - Win8 - power consumption in hibernate mode

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