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08-24-2020

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[Help] 10K+ SSD power cycling count on T14S AMD

2020-08-24, 14:13 PM

I received my T14S (4750U/16G/512G/400nits LP) last Thursday and overall highly satisfied. However one boring issue is the huge Samsung SSD Power On Count  read from CrystalDiskInfo, though "Power On Hours" is just ~10.

 

I didn't call Lenovo local support yet (guess they may ask me to reinstall OS first @^@), and looking for some advice to see whether it's my hardware sample issue or a generic firmware problem for T14/T14S AMD.

 

A few notes: 

  • To exclude CrystalDiskInfo reading issue, I also use AIDA64 Extreme to read SSD S.M.A.R.T and get the same result, i.e. not SW reading issue.
  • No any actual impact observed, just have some concern on SSD reliability after long time run.
  • Initially when I run CrystalDiskInfo, Power On Count is just ~1000 and Power On Hour is ~6. But after a couple of days, it bursts to 11K, and Power On Hour looks correct.
  • It almost doesn't increment when I'm using laptop actively or when laptop is fully shut down (still experimenting the later). I highly suspect it was introduced when laptop was in Sleep mode (e.g. after closing laptop).

 

Not sure whether some other T14/T14S users have or don't have such issue. Your advice is greatly appreciated.

 

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6506 Posts

10-29-2009

NC

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Re:[Help] 10K+ SSD power cycling count on T14S AMD

2020-08-24, 15:03 PM

T14s AMD chipset supports modern standby with D3.cold, this means that the SSD turns off in sleep mode, but Windows is able to turn it on as needed (because of modern standby).  Not knowing the details of modern standby, I guess Windows feels that it needs to access the SSD during sleep mode (for some reason).  Having said all that, this number of power-on cycles seems like a lot.  Let me discuss with SSD team to see if there is any cause for concern here.

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3 Posts

08-24-2020

CN

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Re:[Help] 10K+ SSD power cycling count on T14S AMD

2020-08-25, 9:01 AM

Thanks very much for the explanation! I think it looks like a right guess :-)

 

A few more updates:

  • Yesterday I shut down laptop, and no increment after one night.
  • The increment looks more significant when laptop is AC powered comparing with that on battery mode. 

 

I turn off Wifi (in Flight mode) then put laptop in sleep mode, will check whether it makes difference tomorrow.

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6506 Posts

10-29-2009

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Re:[Help] 10K+ SSD power cycling count on T14S AMD

2020-08-27, 0:16 AM

Just a quick update to let you know that I see the same thing on my T14s and we are investigating it.

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3 Posts

08-24-2020

CN

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Re:[Help] 10K+ SSD power cycling count on T14S AMD

2020-08-27, 7:35 AM

Got it, thanks a lot!

 

As a workaround, I changed "Sleep State" to Linux style in BIOS like Hibernate (pretty slow) but does limit the burst.

 

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6 Posts

02-05-2020

US

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Re:[Help] 10K+ SSD power cycling count on T14S AMD

2020-09-05, 14:26 PM

I was at 40k power cycles when I checked! Hope this issue is resolved soon.

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6 Posts

02-05-2020

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Re:[Help] 10K+ SSD power cycling count on T14S AMD

2020-09-20, 18:46 PM

Just posting an update here to note that the latest BIOS update for the laptop does not appear to have resolved this issue.

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