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83 Posts

04-17-2021

Greece

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Re:T14 AMD battery drain in standby (Linux)

2021-05-21, 10:32 AM

Searching for "Thinkpad sleep battery" in google reveals the the issue goes back at least two years for several models.

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389 Posts

03-06-2021

Germany

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Re:T14 AMD battery drain in standby (Linux)

2021-05-21, 11:40 AM

@ alexkal wrote:

Searching for "Thinkpad sleep battery" in google reveals the the issue goes back at least two years for several models.

 

Yes sure. But we talk here about Linux-supported models. 

 

The thing is, 1.29 -> 1.30 firmware update broke something, and 1.30 -> 1.32 didn't fully

fixed it again.

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94 Posts

12-26-2020

Austria

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Re:T14 AMD battery drain in standby (Linux)

2021-05-21, 14:16 PM

@ osnix wrote:

@ alexhofbauer wrote:

Sorry, that' simply not true. If this was an Apple problem the genius bar would charge you 500 bucks for replacing the battery, denying there' a software problem.

 

Correct. But you are wrong about the $500, is more like $1k :).

 

For the sake of providing a balanced view: in my experience, Apple have replaced components in out-of-warranty MBPs on two occasions:

  1. Display de-lamination
  2. Battery stuck on low charge

There are plenty of other areas where they can be criticized though, but this is totally off-topic :)

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687 Posts

07-22-2019

Canada

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Re:T14 AMD battery drain in standby (Linux)

2021-05-21, 19:43 PM

Wanted to respond to a few items from this thread. Apologies if I miss any:

 

 - @JanSr - my understanding is Windows uses S0ix, I don't think it supports S3. I'm guessing a bit (I barely ever run Windows) but if you're in the wrong sleep mode that might be the source of your headaches. For Linux S3 is still required (support currently being upstreamed, yada, yada)

 

 - @ikovnatsky - 1.32 is supposed to fix the power off battery drain, allow for camera FW upgrade, and fix the TSC related error messages due to the ACPI.

 

 - @le-dvd - I'm the lead technical engineer for the linux PC team - unfortunately it's as good as it gets. I work with the firmware and hardware teams as well as meeting regularly with AMD. I definitely care more about this than just passing certification, but certification is an important step at setting an acceptable standard for Linux users - at least I think it's important. I'll continue working on issues and I really want these AMD platforms to be awesome.

 

- @srgLoop - I'm working on docking issues with AMD currently. It's a known issue with our TBT dock and with TBT monitors we support. I can't comment on the Dell dock I'm afraid - no idea what components they use. There is progress (system no longer crashes with kernel panic) but display isn't working. It's work-in-progress and I had a long discussion with AMD today about next steps. I can't promise any ETA (or success) until we have root cause - but we're working on it.

 

Generally

 - I don't have a good answer for the S3 numbers yet. We're going back into e-cert and we'll have some official measurements. I suspect there will be debate as to whether they are acceptable or not after :)

 - Thank you to everybody who provided details. Very much appreciated

 - 1.32 will be on LVFS soon (I have the ETA but I'm not going to share it based on previous experience....but it's soon). The iso update on the support site works well though (I've done it on my system)

 

Hope I covered everything!

Mark

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10 Posts

11-29-2018

Germany

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Re:T14 AMD battery drain in standby (Linux)

2021-05-21, 19:47 PM

Hi Mark, you covered most I guess, but either I missed it or it's out of scope: What about T14s?

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45 Posts

10-11-2020

United States of America

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Re:T14 AMD battery drain in standby (Linux)

2021-05-21, 20:08 PM

@ MarkRHPearson wrote:

Wanted to respond to a few items from this thread. Apologies if I miss any:

 

 - @JanSr - my understanding is Windows uses S0ix, I don' think it supports S3. I' guessing a bit (I barely ever run Windows) but if you' in the wrong sleep mode that might be the source of your headaches. For Linux S3 is still required (support currently being upstreamed, yada, yada)

 

 

Windows 10 absolutely supports S3. It prefers S0ix, but if bios is in S3 mode it will use it just fine. Forcing S3 for windows is perfectly reasonable because S0ix is garbage, I want real sleep to minimize drain and I would guess most that understand the difference do too. So it's just as important for windows users for S3 drain to be minimal, no worse than intel. That should be achievable, the cpu should be completely off, including the Intel management engine AMD equivalent. If the CPU is off there should be no difference between amd and intel. Of course it could be other devices, well they should be off too.

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687 Posts

07-22-2019

Canada

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Re:T14 AMD battery drain in standby (Linux)

2021-05-21, 20:09 PM

Hi,

The BIOS is 1.32 on the support site:

https://pcsupport.lenovo.com/bd/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t14s-type-20uh-20uj/downloads/driver-list/component?name=BIOS%2FUEFI

So should be covered too. T14s AMD is a linux certified platform so I'm expecting it to be covered.

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25 Posts

04-05-2021

Japan

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Re:T14 AMD battery drain in standby (Linux)

2021-05-21, 22:31 PM

Hi guys,

 

Thank you all for your answers and also thank you @MarkRHPearson for caring about the problem from the Lenovo side.

 

Just to be clear, I am now (including the test with the high power drain) using BIOS 1.32, and Sleep mode is set to Windows 10. If I set it to Linux, the system crashes when I try to wake it up and restarts. As someone mentioned before, I would like to use S3 state in Windows, but that is not the main problem. I can live with S0, only I am worried that it sometimes turns on the fans, which sometimes disturbed me during the night or makes me worried about putting it in the case and my backpack in sleep mode while traveling. I will observe it more, but it seems that it stopped recently after I turned off the Smart Standby in the Lenovo Vantage app.

 

I have an interesting update! I did few tests yesterday:

  1. First sleep after new BIOS - high battery drain.
    1. Time: 2:54:40; 23,510 mWh, 47% of battery, 8,075mW
  2. Then it put itself in hibernation because it drained to 15% and soon again back to sleep automatically
    1. Time: 3:35:31; 1,920 mWh, 4% of battery, 534mW
  3. I charged it and I turned the LID sensor OFF and put it to sleep, it took around 1% of the battery per hour (is that good, or should it be better?)
    1. Time: 1:04:43; 630 mWh, 1% of battery, 583mW
    2. Time: 1:30:23; 750 mWh, 1% of battery, 497mW
    3. Time: 6:59:19; 3,340 mWh, 7% of battery, 477mW
  4. Then I turned on the LID sensor Again and nothing changed!
    1. Time: 1:51:00; 1,000 mWh, 2% of battery, 540mW
    2. Time: 0:37:42; 360 mWh, 1% of battery, 572mW
    3. Time: 6:10:54; 3,590 mWh, 7% of battery, 580mW

 

So it seems that the biggest problem disappeared. And I am not sure what caused it. I will try to reproduce it again and let you know. If anybody would be interested in the sleep report with all the details. I will try to figure out to upload the .html file. You can also check the .xml file, but it is not easily readable.

 

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10 Posts

05-18-2021

United States of America

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Re:T14 AMD battery drain in standby (Linux)

2021-05-22, 9:57 AM

> it took around 1% of the battery per hour (is that good, or should it be better?)

 

1% / hr is order of magnitude (!) worse, than we get on Intel. So I'd say it's rubbish.

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5 Posts

11-02-2020

Russian Federation

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  • Message 300 of 841

Re:T14 AMD battery drain in standby (Linux)

2021-05-22, 13:22 PM

@ dwik1  I agree that the problem is that Lenovo doesn't acknowledge one.

 

But to be fair, MacBook Air M1 has problems with SSD usage which are also not acknowledged by Apple. 

 
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