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6 Posts

04-10-2021

Canada

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ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-04-10, 14:40 PM

I updated the BIOS version on my P340 Tiny from M2WKT41A to M2WKT45A and now my system is unable to Sleep or Shutdown.

When the system enters Sleep or Shutdown mode the monitor goes black, system fan starts to run at maximum speed then system is no longer responsive.

I have to hold down the power button to turn off the system. Attempts to flash BIOS to a previous version will always fail during the process where it needs to restart the system as the system is unable to shutdown to restart.

 

The knowledge base link below above help me resolve the issue.

 

https://support.lenovo.com/ca/en/solutions/ht510933-system-is-unable-to-enter-sleep-hibernate-or-shutdown-with-two-m2-ssd-installed-thinkstation-p340-tiny

 

I was able to flash BIOS back to previous version after I removed the 2nd M.2 SSD from the system.

 

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6 Posts

04-10-2021

Canada

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Re:ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-06-05, 4:01 AM

BIOS version M2WKT49A has been released and here is my experience with the operating system version of the BIOS update:

  • After the BIOS update instead of shutting down I am signed out of Windows.
  • I sign in to Windows and perform a shutdown.
  • After Windows shutdown (which takes longer than previous updates) the system restarts and the BIOS update continues (which again is taking much longer than previous bios updates)
  • After BIOS update is complete system restarts about 3 times before starting Windows. 
  • I am able to login to Windows and verify that the BIOS update was successful.

 

 

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92 Posts

01-04-2021

Russian Federation

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Re:ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-04-11, 20:40 PM

So the old bug was re-introduced in latest BIOS? What an irony )))

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1137 Posts

01-14-2014

United States of America

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Re:ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-04-12, 13:29 PM

Just for confirmation, when you flashed back to BIOS M2WKT41A, the issue went away and you were able to have the system enter 'Sleep' or 'Shutdown' just fine, correct?

 

 

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6 Posts

04-10-2021

Canada

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Re:ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-04-12, 14:54 PM

That is correct. After flashing BIOS back to version M2WKT41A the issue went away and the system can Shutdown or Sleep with two M.2 SSD installed.

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1137 Posts

01-14-2014

United States of America

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Re:ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-04-12, 20:04 PM

Thanks for the feedback.  I brought this up to the P340 Tiny BIOS team for them to look into further.  

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4 Posts

04-13-2021

United States of America

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Re:ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-04-13, 2:46 AM

Thank you for sharing your experience! Well, I have exactly same problem here.

However, in my case, even I disconnect my 2nd ssd, I cannot flash BIOS back to previous version!

Do you have recommendation?

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92 Posts

01-04-2021

Russian Federation

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Re:ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-04-13, 6:07 AM

Did you enable rollback to older version in BIOS? It is disabled by default. 

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4 Posts

04-13-2021

United Kingdom of Great Britain and Northern Ireland

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Re:ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-04-13, 8:39 AM

I have a similar problem. I updated to M2WKT45A a couple of days ago and since then I've been unable to wake my P340 Tiny from sleep. I've checked the usual settings in Device Manager. This happens whether it goes to sleep automatically after the specified time or manually. I then have to press the power button to force shutdown, then restart.

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4 Posts

04-13-2021

United States of America

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Re:ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-04-13, 10:55 AM

Thanks! Finally roll-backed to previous version! :(

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4 Posts

04-13-2021

United Kingdom of Great Britain and Northern Ireland

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  • Message 10 of 52

Re:ThinkStation P340 Tiny BIOS M2WKT45A unable to enter Sleep or Shutdown with two M.2 SSD Installed

2021-04-15, 8:25 AM

I also find that the computer won't fully shutdown. It appears to shut down but the light in the power button remains on. The only way I can start the computer is by holding down the power button first to force shutdown. 

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