10-26-2017 09:39 AM
We have been seeing this issue for sometime now, found the answer using the Offical Lenovo Troubleshooting Guide for the ThunderBolt 3 Dock here:
The solution appears to be: In Lenovo's words you "MUST have a 135Watt Power Supply" - which was provided with the dock according to this tshooting guide. You can use - https://support.lenovo.com/us/en/partslookup locate the FRU P/N on the back of the AC power brick and determine what wattage of power brick you have.
Still have to test it, but since we only have 90w power supplies on hand, not sure if we have been shipped the correct power supply - still sorting this out, but wanted to share this Troubleshooting guide and the big find, being try a 135 watt supply.
Best wishes to ya!
10-27-2017 05:28 PM
I'm having the same problem. Purchased X1 a week ago and the Thunderbolt 3 dock yesterday. For most of today the dock was charging the laptop, but not it will not. A short while ago I installed some updates from the Lenovo Companion, the only thing that has changed today. I've confirmed I have a 135W power supply and I am plugged into the power port on the back of the dock. I don't know anything about updating the BIOS so that's the only suggestion I haven't tried.
Any thoughts / suggestions are greatly appriecated!!
10-28-2017 11:41 AM
10-29-2017 05:16 AM
There is a 90 Degree USB C Type C Male to Female Adapter on Amazon for $9 that works really well to improve the short cord situation. I place my x1c in front of the dock and the right angle adapter sends the dock wire straight back to the dock.
Or search on "Exuun (2-Pack) 90 Degree USB C Type C Male to Female Adapter, Right & Left Angled 90 Degree USB-C USB 3.1 Type-C Male to Female Extension Adapter for Laptop & Tablet & Mobile Phone"
01-08-2018 08:47 AM - edited 01-08-2018 08:48 AM
"The solution appears to be: In Lenovo's words you "MUST have a 135Watt Power Supply" - which was provided with the dock according to this tshooting guide."
Bingo, worked for me, Thank You. I was using my travel adapter, which worked with my T40s docking station.
01-16-2018 10:40 AM
01-25-2019 06:29 PM
I tried your solution and nothing happened. My Thinkpad X380 Yoga turned off and when it is back on, it still says not enough power from the dock. My power supply is 135W.