Take a look at our
ThinkPads.com HOME PAGE
For those who might want to contribute to the blog, start here: Editors Alley Topic
Then contact Bill with a Private Message

t14 gen2 amd

2020 New name Series after T430-T490 / T530-T590
Post Reply
Message
Author
OhYou_
Posts: 21
Joined: Mon Apr 17, 2017 3:11 pm
Location: Espoo Finland

t14 gen2 amd

#1 Post by OhYou_ » Tue Jun 28, 2022 1:05 pm

When you close the lid while it's plugged in, the laptop goes to sleep as expected, but the fan comes on and spins for a bit and goes off, about every 10-30 seconds.
When you unplug the laptop in this lid closed state, the fan maintains this cycle and basically begins draining your battery.
to fix it you have to disable modern standby or whatever by enabling s3 sleep which makes you reinstall the os.
latest firmware, latest windows 10 update, whatever.
what a piece of rubbish

mikemex
Senior Member
Senior Member
Posts: 522
Joined: Mon Oct 04, 2010 8:54 pm
Location: Coyoacan, Mexico

Re: t14 gen2 amd

#2 Post by mikemex » Tue Jun 28, 2022 3:23 pm

I don't even understand the necessity for the new state, as the old one was working perfectly fine. The only explanation I have is that they are trying to emulate phones by placing the whole system into a very low power state, but still active, so it can do things on the background and not suspend completely.

Could be useful if the asymmetric core design had a truly low power mode. But it seems to me like the new "efficient" cores are anything but efficient. So a good idea on paper, but bad on practice.

Or maybe this was intended with different architectures like ARM in mind?
Last edited by mikemex on Tue Jun 28, 2022 8:21 pm, edited 1 time in total.

T61: T8300 | 8GB | 400GB S3610 | SXGA
X301: SU9600 | 8GB | 400GB S3610
T420s: 2640m | 16GB | 400GB S3610 | HD+ 4200M
W530: 2740qm | 32GB | 400GB S3610 | FHD K1000M
X1C5: 7600U | 16GB | 1TB PC711 | FHD
P14s G1 AMD: 4750U | 32GB | 1TB PC611 | PG FHD Touch
T14 G2: 1145G7 | 32GB | 1TB PC711 | FHD

dr_st
Admin
Admin
Posts: 9416
Joined: Sat Oct 29, 2005 6:20 am
Location: Israel

Re: t14 gen2 amd

#3 Post by dr_st » Tue Jun 28, 2022 3:49 pm

OhYou_ wrote:
Tue Jun 28, 2022 1:05 pm
to fix it you have to disable modern standby or whatever by enabling s3 sleep which makes you reinstall the os.
You shouldn't have to reinstall the OS to switch between Modern Standby and Legacy S3, but I guess there can be various components that won't behave properly if you don't, as they were not implemented with the idea in mind that sleep modes can be changed on the fly.
mikemex wrote:
Tue Jun 28, 2022 3:23 pm
I don't even understand the necessity for the new state, as the old one was working perfectly fine. The only explanation I have is that they are trying to emulate phones by placing the whole system into a low power draw state, but still active, so it can do things on the background and not suspend completely.
This is exactly what it is. To combine low-power with fast responsiveness (faster than from S3) and seamless connectivity. Contrary to intuition, if implemented properly, Modern Standby can even bring lower power consumption than S3, but... it's very hard to implement properly (as evident from OP's issue). There are just so many components and dependencies (hardware, system firmware, drivers, OS).

I think S0ix is the term Intel coined for it. "Modern Standby" is Microsoft's name, in Linux it is often referred to as "suspend to idle", versus S3 (suspend-to-RAM), S4 (suspend-to-disk), and S5 (power-off).

https://01.org/blogs/qwang59/2018/how-a ... ates-linux
Thinkpad 25 (20K7), T490 (20N3), Yoga 14 (20FY), T430s (IPS FHD + Classic Keyboard), X220 4291-4BG
X61 7673-V2V, T60 2007-QPG, T42 2373-F7G, X32 (IPS Screen), A31p w/ Ultrabay Numpad

mikemex
Senior Member
Senior Member
Posts: 522
Joined: Mon Oct 04, 2010 8:54 pm
Location: Coyoacan, Mexico

Re: t14 gen2 amd

#4 Post by mikemex » Tue Jun 28, 2022 8:41 pm

dr_st wrote:
Tue Jun 28, 2022 3:49 pm
This is exactly what it is. To combine low-power with fast responsiveness (faster than from S3) and seamless connectivity. Contrary to intuition, if implemented properly, Modern Standby can even bring lower power consumption than S3, but... it's very hard to implement properly (as evident from OP's issue). There are just so many components and dependencies (hardware, system firmware, drivers, OS).
Everything on modern computing is super complex. Have you ever seen the UEFI specification? No wonder why Lenovo screwed it up on ts first implementations (say, the T420 et al)...

They'll get there, eventually. What I don't see a way around is the basic power demands of x86-64 cores. x86 is a stack based architecture (it stores procedure parameters in memory), so it depends on RAM for its basic operation. It is, in essence, a legacy architecture that began with 8 basic registers and it has only extended the amount to 16 when x64 came. It's still way limited compared to modern modern architectures (RISC-V, for example, provides 32).

T61: T8300 | 8GB | 400GB S3610 | SXGA
X301: SU9600 | 8GB | 400GB S3610
T420s: 2640m | 16GB | 400GB S3610 | HD+ 4200M
W530: 2740qm | 32GB | 400GB S3610 | FHD K1000M
X1C5: 7600U | 16GB | 1TB PC711 | FHD
P14s G1 AMD: 4750U | 32GB | 1TB PC611 | PG FHD Touch
T14 G2: 1145G7 | 32GB | 1TB PC711 | FHD

Post Reply
  • Similar Topics
    Replies
    Views
    Last post

Return to “Thinkpad T14/T15/T16”

Who is online

Users browsing this forum: No registered users and 2 guests