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soopa
Fanfold Paper
Posts: 14
Registered: ‎07-29-2016
Location: FR
Views: 5,705
Message 1 of 30

APC_INDEX_MISMATCH on L560 and X260

Spoiler
 

Hi !

 

We've got Lenovo Products for a long time now. We have about 500 lenovo Pc's.

We changed the line of Pc, we went from L540 and x250 to L560 ans x260.

Since this change, we have several problems on those machines.

Random BSOD, mostly APC_INDEX_MISMATCH 0x00000001

We installed latest BIOS, latest drivers.

Sometimes pc's with 2 RAM, sometimes with just 1 RAM

Win7 x64

We did not have those problems with x250 and l540

Asking for Help, Thanks

 

Former Employee
Posts: 1,664
Registered: ‎09-16-2014
Location: US
Views: 5,662
Message 2 of 30

Re: APC_INDEX_MISMATCH on L560 and X260

Think Engineering reviewed your experience and found Microsoft supporting documentation of this issue here:  http://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/apcindexmismatch-blue-screen-on-...

 

Information on returning to the last known good configuration can be found here: http://www.faultwire.com/solutions-fatal_error/APC-INDEX-MISMATCH-0x00000001-*1016.html

 

Troubleshooting in Safe Mode may allow you to determine root cause: http://computer.howstuffworks.com/question575.htm

 

Please let us know what you find.

 

Thank you,

 

soopa
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Posts: 14
Registered: ‎07-29-2016
Location: FR
Views: 5,629
Message 3 of 30

Re: APC_INDEX_MISMATCH on L560 and X260

Thanks for your answer.

 

This is a random BSOD, returning to the last known good configuration won't do anything..

How can i pinpoint which driver is causing this BSOD ?

The drivers were updated using Lenovo System Update software.

 

Thanks

JPP
What's DOS?
Posts: 1
Registered: ‎08-08-2016
Location: FI
Views: 5,602
Message 4 of 30

Re: APC_INDEX_MISMATCH on L560 and X260

Hi,

 

Any progress in this? We have exactly the same BSOD problem and error message with our new X260 models.

 

JP

 

 

PaulCW
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Posts: 6
Registered: ‎08-09-2016
Location: CA
Views: 5,572
Message 5 of 30

Re: APC_INDEX_MISMATCH on L560 and X260

Can confirm, I'm seeing this on a pair of brand-new T460s units.  They've been imaged using SCCM, with all relevant drivers subsequently installed using Lenovo System Update.  They're both crashing in exactly the same way with the APC_INDEX_MISMATCH BSOD. 

 

This issue does not present itself with the five brand-new X1 Carbon units which were imaged a few weeks ago.

 

That's now three different models in three different product lines (L, X and T series).  Sounds like a driver issue to me.  The units here are running Samsung 128GB SSDs.

 

HomerJay
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Posts: 14
Registered: ‎06-09-2012
Location: Springfield, USA
Views: 5,548
Message 6 of 30

Re: APC_INDEX_MISMATCH on L560 and X260

Hi Folks,

 

 

Let's add another model and another product line: ThinkPad 11e Gen 3, type 20GB.

 

We image using WDS/MDT and the SCCM driver pack.  No issues with that process, but all 4 of the machines I've imaged so far blue screen with APC_INDEX_MISMATCH at random points.

 

PaulCW - you mentioned you are running Samsung 128GB SSDs in your models.  That's also what we're running in the machines experiencing the problem.

 

Has anyone been in direct contact with Lenovo about this?  Didn't get a chance to open a case with them before I left on Friday, but planning to do so when I get in on Monday.

 

Former Employee
Posts: 1,664
Registered: ‎09-16-2014
Location: US
Views: 5,530
Message 7 of 30

Re: APC_INDEX_MISMATCH on L560 and X260

My thanks to the customers who have joined this discussion to add their models and share their experiences.

 

If anyone is willing to share their minidump files, please private message me. I would like to provide these files to Think Engineering to review.

 

Thank you,

HomerJay
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Posts: 14
Registered: ‎06-09-2012
Location: Springfield, USA
Views: 5,522
Message 8 of 30

Re: APC_INDEX_MISMATCH on L560 and X260

Thanks, Amy!  I just sent you a PM with a link to minidump files.

 

For others experiencing this - I came across this thread on Reddit:

https://www.reddit.com/r/thinkpad/comments/4q9nbl/t460p_bsod_in_windows_7_x64_anyone_running_into/?s...

 

Author claims that the Realtek audio drivers are the culprit, and this issue is resolved in driver version 6.0.1.7855.  Lenovo doesn't have version 6.0.1.7855 available as far as I can tell, but I am testing with Microsoft's generic HD Audio driver as a work-around.  Will post more as I know more. . .

Former Employee
Posts: 1,664
Registered: ‎09-16-2014
Location: US
Views: 5,513
Message 9 of 30

Re: APC_INDEX_MISMATCH on L560 and X260

After reviewing the models of systems reported impacted, I found one of these models, the T460s, has a Realtek audio driver version .7855 or higher available on support.lenovo.com. Unfortunately, the audio drivers for X260, L460, L560, T460, T460p, and ThinkPad 11e 20GB ThinkPads are lower versions.

 

PaulCW, would you mind upgrading one of your T460s to the driver listed below and report back?

 

Version 6.0.1.7891 for T460s: http://support.lenovo.com/us/en/products/Laptops-and-netbooks/ThinkPad-T-Series-laptops/ThinkPad-T46...

 

Thank you,

HomerJay
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Posts: 14
Registered: ‎06-09-2012
Location: Springfield, USA
Views: 5,453
Message 10 of 30

Re: APC_INDEX_MISMATCH on L560 and X260

Just wanted to let everyone know where this is at.  We started imaging today, but with the Realtek Audio driver for 20GB disabled in MDT.  The laptops still have audio when the task sequence is complete, they're just using Microsoft's generic HD Audio Device driver.  Have not seen any blue screens since we started.

 

Amy - I PM'd you the Lenovo case number for this issue.  Any news from Think Engineering or the Critical Situation team?

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