MTR in dual monitor mode showing purple spinning circles

SLM3204 0 Reputation points
2026-08-29T00:36:54.87+00:00

Currently having an issue with 2 MTR rooms running on Lenovo ThinkSmart PC's with Logitech Taps. The Logitech Tap HDMI ingest is being fed by a Extron 2x1 autoswitch. Barco ClickShare is feeding input #1 and input #2 is an HDMI cable sitting on the conference room table. Input #2 is the priority so that if someone plugs in their laptop, the switch automatically shows their laptop on both displays in the front of the room. When disconnected, switch automatically switched back to Barco ClickShare wallpaper.

During the day, system is completely stable. When left on over night, coming in the next morning, I'm greeted with both front displays showing purple spinning circles. If I click un-share and then re-share content, Barco wallpaper comes back on both displays. If I turn off dual monitor mode and leave overnight, system is up and running in the morning with Barco wallpaper on one display. I've re-imaged the Lenovo PC, replaced the Lenovo PC, changed all HDMI cables, but issue still persists. I've also set the PC for "Ultimate Performance" power setting and disabled all power management settings for USB hubs on the PC (As per a suggestion from Logitech support).

Anybody else experiencing this? Also we have approximately 20 other Teams rooms running in dual monitor mode with no issues. And about 120 other rooms running is single monitor mode.

Microsoft Teams | Microsoft Teams for business | Meetings and calls | Audio and video
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  1. Alina Le 4,920 Reputation points Independent Advisor
    2026-08-29T01:21:19.9166667+00:00

    Hello SLM3204

    First, I would like to briefly list the following troubleshooting has already been performed:

    • Re-imaged the Lenovo PC.
    • Replaced the Lenovo PC.
    • Replaced HDMI cabling.
    • Changed Windows power settings to Ultimate Performance.
    • Disabled USB power management settings based on Logitech recommendations.

    Although I do not have a tool to check this directly for you, I would like to suggest a few steps that you can try on your side. After reviewing these checks, if the issue still persists or requires a deeper investigation, you may consider reaching out to Microsoft Admin Center support for further assistance.

    1/ Check HDMI ingest health status

    Review the Teams Rooms health status through Teams Rooms Pro Management or local diagnostics and check whether any HDMI Ingest or Front of Room Display component is reported as unhealthy.

    Reference: The HDMI ingest status is Unhealthy

    2/ Test without ClickShare connected overnight

    • Temporarily disconnect the Barco ClickShare overnight and verify whether the issue reoccurs the following morning.
    • If the behavior no longer occurs, this may help narrow the investigation to the content-sharing signal path (ClickShare / HDMI ingest chain) rather than the Teams Rooms device itself.

    If the issue continues, please feel free to come back, and I will continue investigating it with you.

    See you again soon.

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  2. AI answer

    2026-08-29T00:37:15.78+00:00

    This points to the Front of Room display path rather than the Teams Rooms app itself, especially since:

    • the room is stable during the day
    • the issue appears after overnight idle time
    • single display mode remains stable
    • re-sharing restores the Barco image immediately

    The supported troubleshooting path is:

    1. Check how the front displays behave when the Teams Rooms PC stops sending video after idle. Teams Rooms on Windows is configured to send no video signal after 10 minutes of inactivity. Front of room displays should be configured for PC mode if available, or set to sleep and wake based on inactive/active HDMI signal.
    2. Verify the displays keep HDMI sync while sleeping. If the displays are not visible to the Windows PC while in sleep state, Windows can treat them as physically disconnected. That can cause display instability and monitoring issues. Check the display manufacturer settings for behavior that preserves HDMI sync.
    3. Test the display chain without intermediate devices. Since the affected rooms use an Extron autoswitch and HDMI ingest path, test by temporarily bypassing any HDMI extenders, adapters, switchers, or EDID-related devices in the front-of-room path where possible. Microsoft guidance specifically calls out HDMI extenders, video adapters, and EDID devices as common causes of display issues.
    4. Check EDID handling. If the switch or any inline device is emulating or managing EDID, verify that it is functioning correctly. As a test, bypass the EDID-related device if possible. Faulty or incorrect EDID handling is specifically called out as a cause of display problems.
    5. Review display power settings and wake behavior. For cases where displays remain off or in standby when the console wakes, verify display power settings and whether the display supports wake on signal. Many displays, especially consumer models, do not automatically wake when the Teams Rooms device resumes video output.
    6. If the displays or switch cannot maintain stable presence to the PC overnight, test a powered EDID emulator/minder. Microsoft notes that powered EDID emulators/minders can mitigate instability and prevent display disconnected alerts when displays are not visible to the Windows PC in sleep state. This is especially relevant for an overnight-only issue tied to idle/sleep behavior.
    7. Keep the display configuration standardized between working and failing rooms. Since other dual-display rooms are stable, compare the failing rooms against the working rooms for:
      • display model and firmware
      • display power settings
      • PC mode setting
      • wake on signal support
      • any switcher, adapter, extender, or EDID device differences

    A practical isolation test for this environment is:

    • leave one affected room overnight in dual monitor mode with the Extron/Barco path disconnected from HDMI ingest
    • leave another affected room overnight with the normal chain intact
    • if the issue only occurs with the switched ingest path present, the likely cause is HDMI sync or EDID behavior in that chain during overnight idle

    Also note that Teams Rooms dual display is designed as an extended display configuration, not a duplicated one during meetings. If the current design depends on external switching to force the same source to both front displays, that makes the HDMI/EDID path more likely to be the source of instability than the Teams Rooms app itself.

    AI-generated content may be incorrect. Read our transparency notes for more information.

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