2018-05-13, 18:09 PM

Hi,

I purchased a Thinkpad X1 Carbon 6th gen (20KG) this week.

I have the issue that it drains significant battery when in sleep mode (connected standby).



I ran the microsoft sleepStudy (powercfg /SleepStudy) and identified that the battery drain in "modern standby" is still 1300mW. That equals 2.4% battery / hour, whereas the modern standby should get below 0.33% battery/hour.

As a result the battery is essentially empty if you charge in the evening and put the notebook into sleep over night.

The battery drain is dominated (~99%) by the entry "Fx Devices" - "Standard NVM Express Controller (\_SB.PCI0.RP05.PXSX)", which has 100% active time (i.e., is active during entire standby period).

In device manager, I find the entry "Storage controllers" - "Standard NVM Express Controller", which looks fine and is a Microsoft driver in Version 10.0.17134.1.

I cannot find a more appropriate driver on the Lenovo page. The Lenovo NVMe firmware upgrade tool (if related at all) tells me that no FW upgrade is available for my model LENSE20512GMSP34MEAT2TA.

Regarding my System: I purchased the X1C without operating system, installed an existing windows 10 home. I installed all updates up to build 1803. I installed Lenovo System Update and installed all available items / drivers. Also I updated the BIOS from the Lenovo support page.

My questions:

- Do you also have this kind of strong battery drain in sleep mode?

- Do you also have the Standard NVMe Microsoft driver, or am I supposed to have a more specialized driver?

- Any suggestions / solutions from Lenovo?

Best

Joe