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Yoga X1 20FQ bios bug

2017-06-06, 11:23 AM

Hello,

There is an bug in BIOS version 1.24 for Yoga X1 (20FQ0041XS). 

 

I'm using WMI filtering while working with GPO. You mess up the chassis type ! (Working well on BIOS 1.21 )

 

Get-WmiObject Win32_SystemEnclosure | Select ChassisTypes

 

chassistype

-----------

 

 

(empty value).. previously it was {10} = laptop type

Please, Lenovo! Fix it 

 

PS: Never seen so many problems with laptops like we have with 10pcs of X1 Yoga series!

3.000$ a pcs, job well done! 

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6481 Posts

10-29-2009

NC

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Re: Yoga X1 20FQ bios bug

2017-06-06, 13:36 PM

Where are you running this query?  If you use Win10 (or Win10 PE) version 1607 or later, I think you will find it works well.  Here is some more info:  https://support.lenovo.com/us/en/solutions/sf17-t0046

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SK

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Re: Yoga X1 20FQ bios bug

2017-06-07, 5:09 AM

This is a powershell command.

Result of this command was a value {10} = notebook, before the update from BIOS 1.21

 

After we updated BIOS to newest 1.24 version, result of this command is a blank field.

That makes GPO/WMI filtering unable to work!

 

Obviously, running windows 10, Pro, 1703

 

Thank you for the link you provided, but I don't see a way how can that help me. Is there a way how to edit these SMBIOS2/SMBIOS3 fields to identify the enclosure properly?

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Re: Yoga X1 20FQ bios bug

2017-06-07, 11:34 AM

Please run following command from admin command prompt:

 

wmic /NameSpace:\\root\cimv2 Path Win32_SystemEnclosure get chassistypes

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6481 Posts

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Re: Yoga X1 20FQ bios bug

2017-06-07, 11:38 AM

Not sure what is going on with your system.  Your powershell script is working well here.  It returns {31} as the ChassisType, which is the correct value.

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SK

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Re: Yoga X1 20FQ bios bug

2017-06-07, 11:48 AM

Well, once again!

 

Having here 10 pcs of X1 Yoga.. 

 

3 of them I updated with BIOS 1.24 

those 3 are returning no value when I'm running your/mine command .. simply empty/blank field .. no { } 

 

rest 7 pcs are still running old BIOS 1.21

when I'm running the command output is {10}  (that value represent "notebook" chassis class)

 

Are you following me now?

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Re: Yoga X1 20FQ bios bug

2017-06-07, 12:46 PM

Sorry, I have no idea what you are saying.  That command is working fine here with BIOS 1.24, see below.  Many other customers have confirmed it also.

 

 

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Re: Yoga X1 20FQ bios bug

2017-06-07, 12:56 PM

Well, where you have {31} I have:

 

ChassisTypes

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

 

 

That's it.. no value

On 1.21 it was value {10}

 

Also, do you think that {31} is more appropriate than {9} or {10} ?

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  • Message 9 of 11

Re: Yoga X1 20FQ bios bug

2017-06-07, 13:02 PM

31 is the appropriate value for Yoga-type system as defined by the SMBIOS 3.0 spec.

To rule out a problem with your image, please clean-install Win10 1703 from Microsoft ISO and then run the command again.

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  • Message 10 of 11

Re: Yoga X1 20FQ bios bug

2017-06-07, 13:08 PM

Man, I wrote above that 7 pcs of X1 Yoga are running BIOS 1.21 .. when I run the command output value is {10}

 

You've changed something in 1.24 and 3 pcs I flashed to 1.24 are returning no value. There is no point in clean-install Win10 1703 ! 

 

1.21 = {10}

1.24 = {31} in your case .. right?

 

So, one day you have a notebook chassisType and the other day you're convertible

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