I have an Lenovo T470s with current NEON (Ubuntu 18.04 based) with the same problem. If I disconnect it from the docking station it freezes. After reverting back to the 4.15.0.43 kernel the issue is gone.
I have an Lenovo T470s with current NEON (Ubuntu 18.04 based) with the same problem. If I disconnect it from the docking station it freezes.
After reverting back to the 4.15.0.43 kernel the issue is gone.