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407 Posts

03-06-2021

Germany

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Re:T14 AMD battery drain in standby (Linux)

2021-07-29, 12:47 PM

@ JJGadgets wrote:

It’s weird that T14/s uses more energy than P14s, isn’t it just the GPU driver + some physical materials that are different?

 

 

Seriously, I've no idea at this point why it eats more.

 

We found out a P14s machine can be different, and have different behavior, depending on how new or old they are.

As an example, newer P14s revs have a different battery unit even.

 

My testing is done on P14s and is very time-consuming. It takes forever to check all BIOS options against each other

in both modes S3 & S0ix. ( + OS optimization vs none on each mode an run ). That will take a while to figure all things.

 

Unfortunate about TSME, I’m currently using that + zram for fully encrypted RAM + swap (I use encrypted ZFS for /home and plan to switch my OS install to ZFS root too). I’ll test it myself if it makes a big enough difference.

 

Just play around and see what you get :).

 

 

Thanks for the reply, seems I captured majority of the important stuff. Time to compile a S0ix Xanmod kernel ;)

 

 

You are welcome :) 

 

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26 Posts

11-17-2013

Toronto

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  • Message 722 of 841

Re:T14 AMD battery drain in standby (Linux)

2021-07-29, 16:27 PM

 

Updates: T14s with Ryzen 7 Pro 4750U 

 

BIOS 1.34 / USB always ON (disabled) 

Ubuntu Mate 21.04 kernel 5.11.0-25-generic / 32 MB Ram

NVMe SKHynix HFS512GD9TNI-L2B0B  / no fingerprint reader / no smartcard / yes WWAN  (Fibocom 850)

 

In 21.66 hours of S3 sleep spent 0.4W per hour

 

This is acceptable. Improved over BIOS 1.30. 

 

Once patches S0 patches trickle down to stable kernel I will update S0 results on T14s

 

----------------

 

With respect to POWER OFF consumption. Still not tested. But with BIOS 1.30 after a couple of days of computer being powered off the battery was completely dead. 

 

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83 Posts

04-17-2021

Greece

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  • Message 723 of 841

Re:T14 AMD battery drain in standby (Linux)

2021-07-29, 16:30 PM

@ joni1101 wrote:

 

Updates: T14s with Ryzen 7 Pro 4750U 

 

BIOS 1.34 / USB always ON (disabled) 

Ubuntu Mate 21.04 kernel 5.11.0-25-generic / 32 MB Ram

NVMe SKHynix HFS512GD9TNI-L2B0B  / no fingerprint reader / no smartcard / yes WWAN  (Fibocom 850)

 

In 21.66 hours of S3 sleep spent 0.4W per hour

 

This is acceptable. Improved over BIOS 1.30.  Now need to test if there is power consumption when the computer is completely off. With Bios 1.30 after a couple of days of computer being totally off it would be completely drained. Will update when I know.

 

PS. Once patches S0 patches trickle down to stable kernel I will update S0 results on T14s

 

 

How that translate in percentage loss?

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6 Posts

06-27-2021

Canada

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  • Message 724 of 841

Re:T14 AMD battery drain in standby (Linux)

2021-07-29, 16:36 PM

@ alexkal wrote:

@ joni1101 wrote:

 

Updates: T14s with Ryzen 7 Pro 4750U 

[...]

In 21.66 hours of S3 sleep spent 0.4W per hour

 

How that translate in percentage loss?

 

Not the GP, but you can calculate this. The T14s has 57Wh of battery. 0.4Wh is almost exactly 0.7% of its battery. That times 21.66 hours makes 8.67Wh of battery drain, or 15.2% of battery design capacity.

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23 Posts

03-01-2021

Singapore

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Re:T14 AMD battery drain in standby (Linux)

2021-07-29, 20:28 PM

S0ix on Xanmod Cacule 5.13.4 seems to sleep and resume properly, except even with the boot command line flags, it seems to take 5 seconds to resume.

 

I haven’t upgraded from 1.29 to 1.34 though. Does anyone know if 1.34 breaks support for NVMe 2242 SSDs in the WWAN slot, like the WD SN520 (whose 512GB variant I have installed)? I read that T14 Gen 2 blacklisted all SSDs in the WWAN slot, so I wanted to check if this got backported via BIOS update.

 

Just to clarify, I don’t know if this happens, thus I’m asking since there’s no rollback for this version. 

 

I wouldn’t want to be stranded without an OS since my OS’es are all installed on the 2242 SSD, leaving the 2280 to store data (ZFS, /home) and have a better upgrade path for my data drive, vs 2242 drives where it only goes up to 512GB, or 1TB on less reputable brands.

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26 Posts

11-17-2013

Toronto

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  • Message 726 of 841

Re:T14 AMD battery drain in standby (Linux)

2021-07-29, 20:47 PM

 

 

 

@ ajake wrote:

@ alexkal wrote:

 

How that translate in percentage loss?

 

Not the GP, but you can calculate this. The T14s has 57Wh of battery. 0.4Wh is almost exactly 0.7% of its battery. That times 21.66 hours makes 8.67Wh of battery drain, or 15.2% of battery design capacity.



Exactly. 

 

Round it 20% of battery gone in 24hrs. This is because 57Wh is the design capacity and by the time you use this machine much the capacity will decrease to 50Wh with degradation of the Lithium battery.

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10 Posts

06-04-2021

Germany

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  • Message 727 of 841

Re:T14 AMD battery drain in standby (Linux)

2021-07-29, 21:08 PM

The Nvme ssd in the WWAN Port works fine on my X13 with bios 1.34

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407 Posts

03-06-2021

Germany

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Re:T14 AMD battery drain in standby (Linux)

2021-07-30, 2:19 AM

@ JJGadgets wrote:

S0ix on Xanmod Cacule 5.13.4 seems to sleep and resume properly, except even with the boot command line flags, it seems to take 5 seconds to resume.

 

 

Check dmesg, please. Most probably the SSD in WWAN slot doing something odd.

Even the *supported* NVME slot has those problems, Linux is just adding workarounds to fix up.

Also even with workarounds we still need iommu=pt to avoid VI fault in the device.

 

I haven’t upgraded from 1.29 to 1.34 though. Does anyone know if 1.34 breaks support for NVMe 2242 SSDs in the WWAN slot, like the WD SN520 (whose 512GB variant I have installed)? I read that T14 Gen 2 blacklisted all SSDs in the WWAN slot, so I wanted to check if this got backported via BIOS update.

 

 

Which is the right thing to do, hehe :). BTW, gen1 has that thing not even HARD blocked when empty, is soft blocked only by thinkpad_acpi.

 

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407 Posts

03-06-2021

Germany

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  • Message 729 of 841

Re:T14 AMD battery drain in standby (Linux)

2021-07-30, 2:24 AM

@ joni1101 wrote:

 

Updates: T14s with Ryzen 7 Pro 4750U 

 

BIOS 1.34 / USB always ON (disabled) 

Ubuntu Mate 21.04 kernel 5.11.0-25-generic / 32 MB Ram

NVMe SKHynix HFS512GD9TNI-L2B0B  / no fingerprint reader / no smartcard / yes WWAN  (Fibocom 850)

 

In 21.66 hours of S3 sleep spent 0.4W per hour

 

This is acceptable. Improved over BIOS 1.30. 

 

Once patches S0 patches trickle down to stable kernel I will update S0 results on T14s

 

----------------

 

With respect to POWER OFF consumption. Still not tested. But with BIOS 1.30 after a couple of days of computer being powered off the battery was completely dead. 

 

 

One interesting note. People with the WWAN slot populated seem to see less drain in general.

 

What revision is this T14s?

 

 

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23 Posts

03-01-2021

Singapore

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  • Message 730 of 841

Re:T14 AMD battery drain in standby (Linux)

2021-07-30, 2:31 AM

This is just my experience but, check rfkill & PowerTop. thinkpad_acpi was showing 100% usage on PowerTop until I used rfkill to block WWAN, even though I have no WWAN antenna *or* WWAN card.

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