MTR camera/screen share issues in ver. 5.7.112.0

Question

MTR camera/screen share issues in ver. 5.7.112.0

steffen storøy 20

Microsoft Teams Rooms 5.7.112.0 causes black camera video and black content sharing on Lenovo ThinkSmart Hub (Windows 11 25H2 / 11H1 image).

Symptoms:

Camera works in Windows Camera app
Camera preview works in MTR
Live meeting camera becomes black
Content sharing becomes black
Multiple devices affected
Same Intel graphics driver works on devices running previous MTR version
Reinstalling graphics driver or flashing BIOS may temporarily resolve issue, but problem returns.

Can't find a way to downgrade MTR without re-installing the HUB's.

Moved from: [Windows for home › Windows 11 › Display and graphics]

bmac 0 Reputation points

2026-10-16T04:27:58.1466667+00:00

We currently have 2 MTRoW rooms that are giving this same issue, they were last working normal as of Oct 5. Other rooms not affected (yet?)

Will need to get some information tomorrow, but here is the hardware involved:

Lenovo MTRoW

QSC core delivered signals over Visionary encoders/decoders

Content shared via HDMI in room AND in room camera feeds ARE seen by remote participants, but not in the front of room screen.

Any shared content in room AND in room camera feed AND remote participant shared content AND remote participant camera feeds do not show up in room on the front of room screen. All are black.

2 answers

Your answer

bmac 0 Reputation points

2026-10-16T04:27:58.1466667+00:00

We currently have 2 MTRoW rooms that are giving this same issue, they were last working normal as of Oct 5. Other rooms not affected (yet?)

Will need to get some information tomorrow, but here is the hardware involved:

Lenovo MTRoW

QSC core delivered signals over Visionary encoders/decoders

Content shared via HDMI in room AND in room camera feeds ARE seen by remote participants, but not in the front of room screen.

Any shared content in room AND in room camera feed AND remote participant shared content AND remote participant camera feeds do not show up in room on the front of room screen. All are black.

Answer 1

Francisco Montilla 31,820 Independent Advisor

Hello,

Because the 5.7 update recently switched app delivery to be distributed exclusively through the Pro Management Portal instead of the store, manually rolling back a specific app version without using the recovery tool to repave the hubs is much more locked down now.

Before we even look at wiping and imaging, I want to see if we can get this stabilized.

What exact generation of the Lenovo ThinkSmart Hub are you using and what specific camera hardware is attached to these affected rooms? The recent update introduced native room console camera controls and there have been a few conflicts floating around where specific camera firmware chokes up right as the live meeting video stream tries to initialize.

Also let me know if you are running a single or dual front of room display configuration. It would also help to clarify if the content sharing goes completely black just on your local room screens or if the remote participants see a black stream on their end as well.

Let me know those hardware details and we can figure out our next step.

steffen storøy 20 Reputation points

2026-10-13T08:47:40.7833333+00:00

Hi!

So, it's three different Lenovo models 11H10002MT, 11H1000KMT and **11H10002EU.
**
Cameras connected: Logitech PTZ Pro 2 and one with Huddly L1.

Most of them are connected to one screen. But we also have one room with two screens affected.

The screen sharing and camera sharing is visual on the recipient end, only black on our side.
Francisco Montilla 31,820 Reputation points Independent Advisor

2026-10-14T04:05:38.8066667+00:00

All three of those 11H1 Hub models run the 8th Gen Intel UHD 620 integrated GPU, and what you might be hitting is a local hardware overlay rendering failure in the 5.7 meeting canvas on Windows 11 25H2.

The reason the MTR settings preview works while live meetings go black is that the preview window renders on the standard desktop layer, whereas live meeting video and shared content get promoted to hardware Desktop Window Manager Multiplane Overlays. Reinstalling the Intel driver or flashing the BIOS temporarily flushes the graphics stack.

Try forcing Windows to disable Multiplane Overlays on one of the affected Hubs so the live meeting video renders on the same standard composition layer as the preview. Log into the local Admin account on the Hub, open Registry Editor, and navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Dwm. Inside that Dwm key, create a new 32-bit DWORD value named OverlayTestMode and set its value data to 5.

Once that value is in place, reboot the Hub so it loads back into the room account, fire up a test meeting with video and screen sharing, and let it go through a display sleep cycle to see if the local rendering holds up.
steffen storøy 20 Reputation points

2026-10-15T06:15:00.5166667+00:00

Thank you for your reply.

I have now tested the OverlayTestMode registry change on three of the affected hubs and rebooted them, but unfortunately the issue persists. The live meeting camera and content sharing are still black.
Jonathan Erickson 0 Reputation points

2026-10-16T12:04:06.2233333+00:00

Our Lenovo ThinkSmart Core Gen 2 12X2S00010 and Logitech Tap Meeting Room Controller USB kit also stopped passing HDMI through for sharing from either the tap controller or the back of the MTR device, camera shows on preview, but not in a meeting.

Answer 2

Erik Janssen 0

We have the same issue with 3 teams meetingrooms.
Our rooms also received Microsoft Teams Rooms 5.7.112.0.
Windows 11 25h2 IoT.
We dont use Lenovo Hub, but Intel NUC11TNKi5000/NUC11TNK.

The workaround "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\Dwm. Inside that Dwm key, create a new 32-bit DWORD value named OverlayTestMode and set its value data to 5." didnt solve it for us.

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