According to Lenovo, symptoms of the USB-C problem include: Port not working Intel Thunderbolt controller not visible in the OS/Device Manager USB-C or Thunderbolt docking stations not. Nov 02, 2021 · After upgrade to windows 11, second monitor connected via USB-C port is not getting detected. Verified the same wire ( USB C to hdmi) able to connect a windows 10 laptop to external monitor. Also HDMI to HDMI external monitor is getting detected .. but not via USB-C. Apr 07, 2019 · Hi I just purchased a P2419HC and using it with Lenovo T480s via USB-C port. It works good, both display and power, but after computer sleep (and P2419HC shutdown). But, when waking up the Lenovo T480s, the P2419HC won't recognize the signal and says "no USB Type-C signal from your device". Reconnec.... Windows 10 not detecting second monitor USB 4 is a mixed attempt to unify the USB-C port, and it certainly can’t solve the ") During loading Windows 10 my primary screen suddenly developed.