Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager in ThinkPad: X Series Laptops https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/quot-UCM-UCSI-ACPI-Device-quot-driver-keeps-appearing-and-disappearing-from-the-Device-Manager/m-p/4430663 ThinkPad: X Series Laptops topics Sat, 15 Jun 2019 08:08:20 +0000 tp02_en <![CDATA[ Re: "UCM-UCSI ACPI Device" driver keeps appearing and disappearing from the Device Manager ]]> https://forums.lenovo.com/topic/findpost/1301/4430663/4454112 Having the same issue as harrisb on X1Y3 1903.
It is working normal after battery reset through the pinhole and then boot.
But if I disconnect the Usb C connector when pc is running the troubles begin.
Port 1 and 2 behaving differently, dock LED on 2 turning white after reconnection and ]]>
Sat, 15 Jun 2019 08:08:20 +0000 https://forums.lenovo.com/topic/findpost/1301/4430663/4454112 han47