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epatterson
Fanfold Paper
Posts: 19
Registered: ‎03-20-2019
Location: US
Views: 438
Message 1 of 50

T480 and T580 video "blinking" issues

Good morning,

 

Over the past 5-6 months, we have been updating machines to the newer T480, T580, and P52s, with the new style UltraDock (40AH0135US).  As these docks only have display ports, we have been utilizing VGA and DVI adapters to send video out to monitors.

 

Many of the users are experiencing issues where their video, for the laptop and external screens, will blink, or just black out momentarily.  We have been in contact with both Lenovo, and our vendor's support for options.  We have tried

* Letting Lenovo replace the docks

    * Same issue occurs

* Different display to VGA/DVI out adapters

    * Same issue occurs

* Running a display port cable to the monitor, if available

    * Same issue occurs

* Tried a different dock (40AJ0135US) that does have a VGA out onboard

    * The machine seemed to run well for about a week, then the issue began to occur again

We have been monitoring the logs, and have found a common entry in at least 3 of the machines

* In the system logs, we found 2 Informational messages:

    * Event ID - 20003 Microsoft-Windows-UserPnP

       Driver Management has concluded the process to add Service igfx for Device Instance

       ID PCI\VEN_8086&DEV_5917&SUBSYS_225A17AA&REV_07\3&11583659&0&10 with the following status: 0.

    * Event ID - 20001 Microsoft-Windows-UserPnP

       Driver Management concluded the process to install driver intcdaud.inf_amd64_ebc6f6a745bbd391

       for Device Instance ID HDAUDIO\FUNC_01&VEN_8086&DEV_280B&SUBSYS_80860101&REV_1000\4&1E912A37&0&0201 with the

       following status: 0x0.

 

Does anyone have any similar issue occuring?  Or, a similar issue with the driver installations running, and causing the video issue?  Thanks

Lenovo Staff
Lenovo Staff
Posts: 5,306
Registered: ‎10-29-2009
Location: NC
Views: 414
Message 2 of 50

Re: T480 not charging

I was a bit confused by your post.  The subject is "not charging" but then you described a problem with blinking displays.  I'm going to try to address the blinking display problem.  Please look in Problem Reports (type "View all Problem Reports" into the start menu), sort by date, and see if the time of the blinking problem corresponds to any of the problem reports.

epatterson
Fanfold Paper
Posts: 19
Registered: ‎03-20-2019
Location: US
Views: 410
Message 3 of 50

Re: T480 not charging

Not sure what happened, as that is not the subject that I entered.

I will check the Problem Reports and get back to you. Thanks for the suggestion
epatterson
Fanfold Paper
Posts: 19
Registered: ‎03-20-2019
Location: US
Views: 400
Message 4 of 50

Re: T480 not charging

More information for you on this.  I have been working with another user.  We have been trying to force the system to have the video issue occur.

 

You can see the error report from his machine.  The image I saved is after we tried disabling the Intel video driver.  All screens, except the laptop went black.  Once re-enabled, the screens came back.  

Lenovo Staff
Lenovo Staff
Posts: 5,306
Registered: ‎10-29-2009
Location: NC
Views: 378
Message 5 of 50

Re: T480 not charging

Disabling the video driver is not a valid test.  Only the internal screen will work if you disable the video driver.

epatterson
Fanfold Paper
Posts: 19
Registered: ‎03-20-2019
Location: US
Views: 354
Message 6 of 50

Re: T480 not charging

The reason we tried disabling the video driver was to see what would happen.  We are grasping at straws, as this problem is occuring with multiple machines, and the only commonality between them is the docking station and the Event ID: 20003 video driver running about the time the screen blinking/black out occurs.

 

If you have another suggestion, I am open to it.  I am looking into a way to disable the driver process from running to see if it helps.

Lenovo Staff
Lenovo Staff
Posts: 5,306
Registered: ‎10-29-2009
Location: NC
Views: 352
Message 7 of 50

Re: T480 not charging

So there's nothing else in Problem Reports, such as a "Hardware Error" in the "Windows" category?  With the blinking symptom you described, I'm expecting to see a LiveKernelEvent from the video driver which would be logged as a windows hardware error.

epatterson
Fanfold Paper
Posts: 19
Registered: ‎03-20-2019
Location: US
Views: 349
Message 8 of 50

Re: T480 not charging

There wasn't anything in the reports like that on the machine we were working with yesterday.  I have a user, also with the issue, locally, that is out today.  I will check the reports on her machine and report back to you.  Thanks for your time on this.

Companymobile
Paper Tape
Posts: 5
Registered: ‎03-21-2019
Location: DK
Views: 345
Message 9 of 50

Re: T480 not charging

We are experiencing the exact same thing. Following this threat.
epatterson
Fanfold Paper
Posts: 19
Registered: ‎03-20-2019
Location: US
Views: 335
Message 10 of 50

Re: T480 not charging

OK.  I have fired up the other user's machine, and gone through the Problem Reports

There are several of these:

 

Description
A problem with your hardware caused Windows to stop working correctly.

Problem signature
Problem Event Name: LiveKernelEvent
Code: 1d4
Parameter 1: 0
Parameter 2: c
Parameter 3: 0
Parameter 4: 0
OS version: 10_0_17134
Service Pack: 0_0
Product: 256_1
OS Version: 10.0.17134.2.0.0.256.48
Locale ID: 1033

Extra information about the problem
Bucket ID: LKD_0x1D4_COMMAND_TIMEOUT_c_UcmUcsi!Ppm_CommandTimerCallback

 

All the messages are the same.  There was about a 2 week lull in them after we put the different dock in place.

I wil start doing some more research on this...

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