Hello,
We purchased 8 of these docks total (5x Walmart Online, 3x Amazon), we have had issues on most of them with blinking monitors and disconnecting peripherals & ethernet on varying monitors.
We have been using the docks in conjunction with the Dell Precision 3560 laptop.
Note All laptops have Windows 10 - 20H2, latest Chipset/MOBO/GPU Drivers, latest BIOS.
Tried plugging the dock directly into the wall outlet, as well as power surge strip.
Tried Airplane Mode, lowered the Wi-Fi output power, turned Wi-Fi completely off, unplugged Ethernet cable (we have Cisco 8841 VoIP Phones with data passthrough for network/internet connectivity).
Tried different cable from Dock > Laptop.
To give you an idea here is a few examples of the setups we have for different users:
Setup 1
TBT3-UDC3 Dock via cable that came with the dock
Dell Precision 3560 Laptop
2x Dell U2415 Monitors
Result: This setup was by far the worst, it immediately flashed both monitors and disconnected the peripherals etc, no amount of power cycling both dock and laptop or the above mentioned fixes worked. We ended up using a TBT3-UDV Dock with HDMI to USB-C adapter and it worked fine.
Setup 2
TBT3-UDC3 Dock via cable that came with the dock
Dell Precision 3560 Laptop
1x Dell U2415B
1x Dell U2417H
Result: Intermittent flashing of both monitors, a few power cycles of the dock and rebooting the laptop would rectify this for the day usually, every time the user came back into work and re-docked the laptop, the flashing would begin again until a few power cycles. We ended up using a TBT3-UDV Dock with HDMI to USB-C adapter and it worked fine.
Setup 3
TBT3-UDC3 Dock via cable that came with the dock
Dell Precision 3560 Laptop
2x U2417H
Result: Same as setup 2, but so far the blinking has stopped after about a week so we did not switch it out with a TBT3-UDV Dock.
I’m wondering where to go from here, did we get a lemon batch from 2 different retailers? The laptops work fine with the TBT3-UDV Dock, and with other brand docks, so I am not convinced the laptops have something wrong with them.
Is there some compatibility issue with the TBT3-UDC3 Dock and the Dell Precision 3560 perhaps?
Please let me know if you need more information or any other potential fixes I can try, at this point I don’t trust this dock with the laptop at all and may need to return them unless you can hopefully help.
Thanks