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19 Posts

03-09-2021

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X1 nano - high battery drain in s2idle

2021-03-25, 4:29 AM

Fedora 33, kernel 5.10.23-200

 

I'm seeing my X1 Nano lose 6-8% of its battery every hour it's suspended in s2idle. I'm reasonably certain it is suspended -- I see 'kernel: PM: suspend entry (s2idle)'  in journalctl output.

 

Is this a common issue? Any fix?

 

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389 Posts

03-06-2021

Germany

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Re:X1 nano - high battery drain in s2idle

2021-03-25, 9:17 AM

@ mkitt wrote:

Fedora 33, kernel 5.10.23-200

 

I' seeing my X1 Nano lose 6-8% of its battery every hour it' suspended in s2idle. I' reasonably certain it is suspended -- I see ': PM: suspend entry (s2idle)'  in journalctl output.

 

Is this a common issue? Any fix?

 

 

No idea about the X1 but P/T models have such a problem.

The BIOS team of those is working on a fix.

 

Maybe add a comment about your machine in this thread:

 

T14 AMD battery drain in standby

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676 Posts

07-22-2019

Canada

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Re:X1 nano - high battery drain in s2idle

2021-03-25, 13:19 PM

Actually that shouldn't be related. The AMD issues are different (as an aside it doesn't have S0ix yet) and on the X1 Nano we've not had an energy cert issues and I know the Intel power folk have also looked at this system when running Linux and confirmed it's working well. I wouldn't expect to see issues like this.

 

I don't have an X1 Nano myself but my colleague does - we can run some tools to measure and check the CPU is getting into the lower states.

 

Please make sure you have the latest BIOS installed too - always a good starting point.

 

Mark

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19 Posts

03-09-2021

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Re:X1 nano - high battery drain in s2idle

2021-03-25, 15:46 PM

Thanks, Mark. fwupdmgr and Vantage both report that there are no available firmware updates. My Nano is at:

 

BIOS: 1.39 (N2TeT61W) 

Embedded Controller Version N2THT50W (1.26 )

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19 Posts

03-09-2021

United States of America

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Re:X1 nano - high battery drain in s2idle

2021-03-30, 0:12 AM

I've attached the output of  'turbostat -o ts.out rtcwake -m freeze -s 60' here. It appears the cpu isn't reaching pc10, which I gather is what could be causing what I'm seeing?

 

This is a stock install of Fedora 33.

 

Thanks --

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19 Posts

03-09-2021

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Re:X1 nano - high battery drain in s2idle

2021-03-30, 0:18 AM

I neglected to attach the file. I've put it in a pastebin instead:

 

https://pastebin.com/iDZkSqvx

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218 Posts

12-17-2018

United States of America

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Re:X1 nano - high battery drain in s2idle

2021-03-30, 11:22 AM

I am running the latest FC33 kernel 5.11.10 and I ran Powerhouse mountain and I see that mine is reaching PC10.  Please update the kernel and see if that fixes it for you

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19 Posts

03-09-2021

United States of America

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Re:X1 nano - high battery drain in s2idle

2021-03-30, 14:58 PM

Apologies, I should have mentioned that I've updated the kernel since my first post. I'm also on kernel 5.11.10,  and turbostat isn't reporting any time spent in pc10 during suspend:

 

turbostat --show SYS%LPI --show Pk%pc10 echo freeze > /sys/power/state

[...]

73.300063 sec
Pk%pc10    SYS%LPI
0.00    0.00
0.00    0.00

 

Sorry, I'm not sure what you meant by "powerhouse mountain".

 

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19 Posts

03-09-2021

United States of America

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  • Message 9 of 12

Re:X1 nano - high battery drain in s2idle

2021-03-31, 21:46 PM

Thinking I might have changed something in BIOS, I reset to defaults and still have the same battery drain and it isn't reaching PC10.

 

I'm not certain how to figure out what's preventing PC10 residency, but this happens with no devices plugged into any ports, just a stock X1 Nano with Fedora 33.

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218 Posts

12-17-2018

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  • Message 10 of 12

Re:X1 nano - high battery drain in s2idle

2021-03-31, 21:59 PM

Hi

Powerhouse mountain is an Intel tool for testing the sleep levels and what might be causing the system not getting into PC10.  Mine is clearly at PC10 and it drained 18 percent in 26 hours of sleep so less than 1% per hour.  What is the ME level of your system as your BIOS and EC are the same as mine

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