Battery drain issue when in sleep mode

Do you have these same power schemes?

C:\>powercfg /list

Existing Power Schemes (* Active)
-----------------------------------
Power Scheme GUID: 381b4222-f694-41f0-9685-ff5bb260df2e (Balanced)
Power Scheme GUID: 3b95affe-13a8-4a92-a8d8-858ba0d5dcb9 (Maximum Performance) * <--- * means enabled
Power Scheme GUID: 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c (High performance)
Power Scheme GUID: a1841308-3541-4fab-bc81-f71556f20b4a (Power saver)
Power Scheme GUID: db81ff77-a9c6-451c-95a6-824e6c4e0291 (Power on Demand)
 
Not exactly the same shemes. Here is my powercfg /list:


Modes de gestion de l'alimentation existants (* Actif)
-----------------------------------
GUID du mode de gestion de l'alimentation : 381b4222-f694-41f0-9685-ff5bb260df2e (Utilisation normale)
GUID du mode de gestion de l'alimentation : 49ef8fc0-bb7f-488e-b6a0-f1fc77ec649b (Dell) * <== This is the Dell specific scheme. I have made some modifications (but without effect on battery drain)
GUID du mode de gestion de l'alimentation : 6e76509e-f480-4582-bfda-81fdae99e027 (Ecoute de Musique)
 
You could try to disable your network adapter (there's only a Wi-Fi adapter, right?) before you put to sleep your pc, and see if this helps (how could it be connected without a connection?)...
 
I've already tried that... No effect on battery drain problem.

I've also ran a script to disable wifi and sound automatically when entering Connected Standby (and another script to enable wifi and sound when exiting CS).
You can have a look here:
How to Automate Wi-Fi and Volume Mute for Connected Standby to save battery - Windows Central Forums

The only way I've found was to disable CS mode (with the keyboard problem): but may be because of a windows update (which one?), I can't disable it anymore...
 
Yes, the script is working very well... The network is disabled during the connected standby. But I haven't seen any significant effect on battery drain problem: may be some % saved.
I also did tests by manually disabling the network before entering sleep (switch to airplane mode). May be I will test again these scripts.

The only conclusive test I have done is to have disable the CS mode (I mean no battery drain): but it caused the problem with the keyboard.
 
If you want to try it, I modified and exported the "Power saver" power scheme: View attachment Power Saver.zip <--- click to download

To import the power scheme, unzip/decompress the file on the desktop and launch this command from an elevated command prompt:
powercfg /import "c:\users\%username%\desktop\Power Saver.pow"
(if you get an error, try your real windows account folder name, in c:\users)
You should receive a reply like this one:
Imported Power Scheme Successfully. GUID: eaf150bb-638e-4da6-8f8b-530f6f815dda
(your GUID will be different)
To set it active, launch this command (from the previous command prompt, or from a new one if you closed it):
powercfg /s eaf150bb-638e-4da6-8f8b-530f6f815dda
(i.e., you should use the previous GUID received as reply)

Then try to put your machine to sleep and see if things change for the better...
 
Last edited:
Hi all


This is getting interesting, yes?

I'm guessing that the Anniversary Update has made some changes to the exact locations for some of the power options settings (in the Registry, especially).

I'm curious to hear - what size SSD is in the laptop? Here in the States, SSD prices are dropping nicely, and 512 GB SSDs are available for about 100 US dollars (when "on sale"). With a spacious SSD, you could go ahead and use hibernation, and avoid any issues with Connected Standby. Just a thought....
 
This is getting interesting, yes?
;)

Noel155, OldGrayGary said:
[not sure why the CS change should affect the keyboard's function keys.... Just to see: look in your BIOS/UEFI settings for an item, possibly in an "Advanced" section...
I saw you didn't write anything about your BIOS in any of your posts.
Today I had the (unlucky) chance to check my BIOS settings (something went wrong after I did some actions before to update windows...).
My BIOS is P11-A0 08/10/2012 (I think that's August the tenth), ACER version 2.15.1227.

In the power tab I have got:

  1. ACPI suspend mode
  2. Deep power off mode
  3. Power on by RTC alarm
  4. Power on by PCIe devices
  5. Power on by onboard LAN
  6. Wake up by PS/2 KB/Mouse
  7. Wake up by USB KB/Mouse
  8. Restore on AC power loss

About the 1st option, I can select S3(STR) (it's the default) or S1(POS) (finally I can guess what they are...); for the other points, enable/disable or on/off.
About the 2nd option, there's written: Deep SX configuration; note: mobile platforms support deep S4/S5 in DC only and desktop platforms support deep S4/S5 in AC only.
About the last option, there's written: Specify what state to go to when power is re-applied after a power failure (G3 state).

Hence maybe you could find some useful settings in your BIOS, for your problem...
 
Hi again all

Just to see, I took a look over on the Dell site, and looked to see if an updated BIOS might be available. They do show a somewhat recent version (from November 26, 2015) that might/might not help things.

What I'm hoping it would help is the issue with the function keys when Connected Standby is disabled. One of the main keyboard issues this Bios update helped was a problem with the space bar (it tended to produce two spaces rather than just one). But - who knows? - maybe the more recent Bios would get along with Windows 10 better, too.

If the XPS originally came with Windows 8.1, and the Bios hasn't been updated for a few years, seems like the update shouldn't hurt.

The update I found is on the following webpage:
Dell XPS 13 9343 System BIOS Driver Details | Dell US

You'll want to check and make sure that the Bios update is an exact-match for your model (search using your Dell Service Tag - that is the easiest way).
_______________

The old worries about hibernation on SSDs aren't quite as relevant lately: the main issue for older model SSDs is the space that the hibernation file uses. It might matter more for a 120 GB SSD than a 240 GB or 512 GB SSD. Most of the SSDs have warranties for three to five years, and advertise expected usage to last as long as seven years or so. Your XPS has the "M2" type of SSD, which is wonderfully fast, but a little more expensive than the 7mm/2.5" SSDs. I wouldn't expect the hibernation file to be an issue if your M2 SSD is 240 GB / 256 GB or larger.

Cheers

[ & hi xilolee :) ]
 
Hi!
If you want to try it, I modified and exported the "Power saver" power scheme: Power Saver.zip <--- click to download

@Xilolee: I do not have a lot of time until sunday for testing... This evening, I have loaded your "Power saver" file. All is ok without any error, but I do not understand: There is no power saving option activated in the new profile (for example: "action on low battery: nothing", "swith off screen:never", ...).
Normal?
 
Yes, I let you decide those time settings.
IIRC, I set to 5 minutes the hard disk turning off.
Maybe I had to set the sleep and monitor off after 4 minutes...
You can also set them after a minute, just to try it asap.
 
Last edited:
Hi all!

Here are some news.


1 - testing the new power scheme:
  • The battery level went from 100% to 80% the first 12 hours (1.6% per hour)
  • Then from 80% to 47% in the following 23 hours (1.4% per hour)

You can have a look on the last Sleepstudy report: the consumption of the CPU by the USB controller no longer appears in the report. It remains only Intel "Smart Sound (\ _SB.PCI0.ADSP)".

This is not yet significant, as I unplugged the USB controller of my Logitech mouse. That said, I had already done this test without any success. So tonight, I will repeat the test leaving all connected and keeping the same Power Scheme.

2 - CSEnabled:

I do not understand why, but the CS mode it was no longer possible to disable is now disabled... Why ??? (got an update from Windows yesterday: is this related?).
The result is that there is no battery drain, butthe keyboard problem with function keys reappeared! This is crazy!



I did not have enough time to do more tests for now (a complete test takes at least one night without turning on the PC).
 

Attachments

I have an unusual problem this evening: Can not reactivate the eve S0 (Connected Standby mode). Windows does not care about the registry parameters values!:banghead:
 
@OldGrayGary:
Just to see, I took a look over on the Dell site, and looked to see if an updated BIOS might be available. They do show a somewhat recent version (from November 26, 2015) that might/might not help things.

My Bios is already up to date... I watch regularly if updates are available...
 
Hi again



I'm leaning to the idea that the Registry locations for some of the Power Options changed in the Anniversary Update. It's almost like a different operating system ("Windows 10.1").

Can you go into the BIOS/UEFI setup screens again, and look for the option that toggles the Fn key functions? It usually has two settings. Either the F1,F2, F3, etc keys are set to require holding down the Fn key at the same time (to perform the special funcions with volume, brightness, wireless, etc.) -- or -- to NOT require holding down the Fn key to produce the special functions. I'm pretty sure that there is a setting in there somewhere --- I see it a lot on the newer laptops that I repair. I wish I could tell you exactly where it is in your BIOS/UEFI settings, but I couldn't find a guide with the exact location.

Good luck!

[P.S. .... for the S0 state, I'll have to look that up ... if I'm lucky, another tech will answer that one (I'm not the fastest researcher in the world)]
 
Hi all!

Here are some more news.

@Xilolee:

1 - about testing the new power scheme:

  • The new power scheme changes nothing : For information, I saw that the sleep mode was configured to switch into hibernation after 180 minutes. As I have a 256GB SSD, I have disabled this option. So my PC behaves as my standard energy saving scheme (In hibernation, I know that my PC does not consume any CPU time)

2 - about CPU time:

  • with my Logitech Mouse controller: CPU consumption on USB controller and Intel SmartSound.
  • without Logitech Mouse controller:
    • NO CPU consumption with USB controller
    • CPU consumption on Intel SmartSound

I'm not sure, but in my mind, it means that if I remove my Logitech mouse USB controller, there is no more CPU used by system USB controller: I do not understand why because I have configured my BIOS to ignore all the possibilities for the PC to automatically exit standby mode (wake on lan, wake on USB, ...).

I can conclude that I must find what activates the Intel SmartSound driver and how to disable it.
Idea somebody? (I'm first going to disable the driver in the device manager: I already know that I will keep sound capabilities).

@OldGrayGary:

I've already looked everywhere how to restore the normal functioning of my keyboard ... Including in the BIOS, but without success.
 

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