06-27-2019 09:02 AM
07-12-2019 05:43 PM
Thanks for posting in the Community,
Have you tried installing the Thunderbolt Firmware Update Utility? If you haven't yet, you can download it below, along with the Intel Thunderbolt Controller,
Also, please share us the exact model of the Thunderbolt Docking Station that you're using, so we can check for driver.
08-29-2019 02:00 AM
I have the exact same problem and it's driving me nuts. I've the latest drivers installed, both on the X1 and the docking station.
Docking Station: ThinkPad Thunderbolt 3 Workstation Dock, Model No. DK184, Type 40AN
As mlody already described, the whole system gets very sluggish after reconnecting to the docking station. For example moving a window around is or typing this text is very laggy. The only fix is to reboot the system after each reconnect, which is really annoying.
08-30-2019 06:43 AM
All this time, I continued to do the troubleshooting of my issue and concluded that something is messed up with the graphic cards switching on my laptop/or software that handles it.
I had tried several other docking stations (even USB-C), and the same issue exists. To make things even worse, the problem also exists when merely connecting to an external monitor via HDMI port - no dock involved.
One common thing with all these setups is that I always keep my X1 build screen/lid closed. When I retested the same general configuration (Thunderbolt dock, USB-C dock, external monitor only) but with the screen/lid open on my X1, the issue is NOT present!!! Come on, Lenovo!!!
This situation got me curious, and I started to mess with the BIOS next. After I switched the settings to always run the dedicated NVIDIA graphics, my issue went away. I can close the lid/screen on my laptop and enjoy lag-free usage. The only downside is that my battery life is crap (2-3 hours only) when I am using the laptop on the go since it is always using the discrete video card. I wish there was an option to force the system to use the Intel graphics instead.
Overall this is not an acceptable solution, but more of a band-aid. I expect more from Lenovo, and this lack of proper solution left a sour taste in my mouth. I will not be buying another Lenovo that is for sure.
08-31-2019 02:57 AM
I just wanted to share that I've made the exact same observations as mlody.
I also use my X1E 1st Gen on the TB3 Workstation Dock, mainly with the lid closed. Using HDMI or DisplayPort doesn't make a difference and the problem goes away most of the time if I kill dwm.exe.
However, that's just as unacceptable as running the discrete GPU all the time. Since a lot of users have these problems (there are other threads as well, w/o real solution) I expect this is a general problem and should be addressed asap by Lenovo.
Drivers and dock firmware are up-to-date and I use the latest NVidia/Intel drivers distributed by Lenovo.
09-20-2019 11:58 PM - edited 09-20-2019 11:59 PM
Same problems like Vadrigar here. Only kill of dwm.exe helps until new reboot.
(1st Gen X1E + USB-C Dock with 2 External Monitors connected, X1-lid closed)
09-30-2019 08:15 PM
I solve this problem every time, disabling and enabling the intel integrated gpu in device manager. (i can't disable hybrid graphics because when i select discrete gpu in uefi, i get a black screen in the laptop lcd and can only use it with external displays, even with the lastest UEFI)
11-26-2019 01:29 PM
Disabling/Re-enabling the Intel UHD graphics driver in Device Manager does the trick for me and seems to be the simplest workaround right now.
Lenovo, any word on when a permanent fix will be released?
11-26-2019 02:43 PM
There are several threads about this issue, they should be merged. In at least one other thread Lenovo mentioned fix will be available first week of December.