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mircolino
SCSI Port
Posts: 27
Registered: ‎02-15-2019
Location: US
Views: 858
Message 1 of 23

"UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager

On my X1 Extreme (20MF000CUS) I recently noticed that when I open the Windows 10 Device Manager the list of devices keeps refreshing, like a new hardware scan is being forced every 2-3 seconds. I started disabling all the devices one by one and I finally narrowed down the culprit:

 

USB Connect Managers -> UCM-UCSI ACPI Device  (Hardware Id: ACPI\VEN_USB&DEV_C000)

 

This device, when active, keeps appearing and disappearing from the device manager tree forcing a refresh every few seconds.

And it only happens when my Lenovo Thunderbolt Dock (40AN0230US) is connected. When I disconnect the dock the driver stops disappearing and becomes stable.

 

Opening the driver Properties -> Details I get:

 

Status: 01802400 (DN_HAS_PROBLEM)

Problem code: 00000016

 

Any idea what is going on?

 

 

Social Support Agent
Social Support Agent
Posts: 492
Registered: ‎08-02-2018
Location: US
Views: 817
Message 2 of 23

Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager

Hi mircolino!

 

Thanks for posting in the Community,

 

Make sure to update all the Drivers and Firmware for the Thinkpad Thunderbolt 3 Workstation Dock,

 

https://support.lenovo.com/us/en/solutions/pd500252

 

Let us know if this works.

 

Regards,



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mircolino
SCSI Port
Posts: 27
Registered: ‎02-15-2019
Location: US
Views: 801
Message 3 of 23

Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager

Thanks Hector.

 

Of course I'm running the latest TB3 dock drivers and firmware. But that unfortunately doesn't help.

This is very annoying as the device manager keeps refreshing and rescanning the hardware every 2-3 seconds.

 

What is the UCM-UCSI ACPI Device? And what does it do?

Could it be something defective with the TB3 dock hardware?

 

TIA

Administrator
Administrator
Posts: 161
Registered: ‎07-23-2018
Location: US
Views: 791
Message 4 of 23

Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager

Hi there! Could you please connect the TB3 dock and then go to device manager, uninstall the driver specific for the thinkpad and then once done, restart the laptop with the TB3 still connected to it. The driver will be reinstalled. Check if it's the same issue. 

mircolino
SCSI Port
Posts: 27
Registered: ‎02-15-2019
Location: US
Views: 765
Message 5 of 23

Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager

Just as a test I cleaned all unused devices with dism.exe, purchased a different TB3 dock (CalDigit) and I get the exact same behaviour: the "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager forcing an hardware refresh every few seconds. It only stops when I have no TB3 devices connected.

Still don't know what this "UCM-UCSI ACPI Device" is or does. If I disable it in the Device Manager the hardware refresh stops and everything seems to be working OK (including the TB3 dock).

At this point it's either a driver problem or my laptop problem.

Anybody else seeing this? TIA

darkrpogy
Paper Tape
Posts: 2
Registered: ‎05-21-2019
Location: GB
Views: 701
Message 6 of 23

Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager

Hi There,

 

Same issue on my X1-extreme when I connect any TB3 dock. But it started to happen after 1903 update. This is definitely a driver/OS issue, not an hardware issue.

 

Plus, after 1903 update, Thunderbolt3 Controller also started to act weird.

 

Please Lenovo ,we urgently need updated drivers for Windows 10 1903.

 

Thanks.

VLI
What's DOS?
Posts: 2
Registered: ‎05-24-2019
Location: TW
Views: 615
Message 7 of 23

Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager

Same issue on my X1 Carbon 6th when I connect TB3 dock.
It started to happen after 1903 update.

mircolino
SCSI Port
Posts: 27
Registered: ‎02-15-2019
Location: US
Views: 599
Message 8 of 23

Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager

I still don't get what this device (driver) does and why, if I disable it, still everything seems to be working OK 🤔

Guru
Posts: 1,802
Registered: ‎04-20-2008
Location: US
Views: 584
Message 9 of 23

Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager


@Hector_Lenovo wrote:

Hi mircolino!

 

Thanks for posting in the Community,

 

Make sure to update all the Drivers and Firmware for the Thinkpad Thunderbolt 3 Workstation Dock,

 

https://support.lenovo.com/us/en/solutions/pd500252

 

Let us know if this works.

 

Regards,


I am having the same issue on my P1 connected to the Gen2 Workstaton dock. I've updated the FW on the dock to 3.153 per your instructions, but there is no change in the device manager behavior. The USB Connection Manager functions correctly when then system is undocked (all USB-C ports are working), but when connected to the dock, the error keeps occuring. This is on Windows 10 1903. The issue did not happen on the previous Windows 10 feature update (1809). It appears that a driver is missing that is intended to support the USB-C port on the dock. Any further suggestions?

 

 UPDATE: I connected my Gen1 TB3 dock to my P1, updated the FW and the drivers and the issue was NOT present. However, when I detached that dock and reconnected the GEN2 Workstation TB3 dock, the behavior noted reappeared. This seems to be a FW issue in the GEN2 dock and not a driver issue with Windows. I've reinstalled all relevant software and FW with no change. Changed to use my TB3 GEN1 dock until this is corrected. Waiting for a solution.


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V-Tibi
Paper Tape
Posts: 4
Registered: ‎02-05-2019
Location: HU
Views: 542
Message 10 of 23

Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager

I noticed similar thing on my L380 after installing the 1903 update. UCN-UCSI ACPI Device under USB Connector Manager node kept refreshing in the Device Manager window except I did not have any dock connected. I suspect the type-c charger caused it. after unplugging and reconnecting everything it stopped doing it for now.

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