This is a splitting & continuation from another thread . With my 16" MBP with Catalina, connecting a display to the dock or waking the display up after it’s gone to sleep causes mouse motion to repeatedly freeze up for a fraction of a second every ~2.4 seconds. The effect tends to stop after a while…

Just received DisplayPort cable and conducted test with the LG 29UM55-P: When using the HDMI or DisplayPort interface with straight HDMI-HDMI/DP-DP cables, the mouse freezing was still encountered. While it appears that the HDMI/DP ports farthest from the power cable both encounter the repeated fre…

Just tested the HP2159m w/ HDMI-DVI cable and the dock I have at home. It in fact has the same behavior. If the dock’s HDMI port closest to the power cable is used then there’s one “freeze” after a few seconds of the cable being plugged in, and there’s no further freezes. However using the HDMI por…

Thanks for all of the testing you’ve performed and shared with us. We’ve been so far unable to replicate this issue ourselves on several Mac systems on either Catalina or Big Sur, but we’ve been getting a few more reports here and there from other customers. Research into this issue has been tricky…

Hi Joshua, I’ve been having the exact issue. 16” MBP on Big Sur. However, my issue persists on both HDMI ports, and doesn’t go away. Any resolution?

@aminjiwa We’re trying to work with Intel and Apple to further investigate this issue, but unfortunately as mentioned above, we do not yet have a fix for this issue at the moment. It has been a tricky problem to solve as there hasn’t seemed to be any definitely pattern to the behavior. For example,…

Thanks Joshua. Hopefully we can have a resolution soon! Is there somewhere I can check to make sure I have the latest firmware?

You’re most welcome. At this time we do not have any newer firmware, but we are working to offer an updated firmware in the hope of possibly “working around” this issue. If/when the firmware becomes available, we will likely want to try sending a replacement dock under warranty and see if it helps. …

Great. Do I need to open up any support requests or will you notify me?

No need to open any request, I’ll reply here with any news.

Plugable Support

Display Connection/Wakeup Causes Cyclic Mouse Freezes

Thunderbolt TBT3-UDZ

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