I got a Thinkpad laptop had one HDMI out and one USB-C, bought a cheap USB-C to HDMI converter at Amazon, originally works fine for me to hook up to two external monitors.
However, after some time, whenever I remove all the peripherals, and take my laptop out, after hook up everything back, this USB-C TO HDMI always giving me trouble to get back to work.
Here’s what I found to make it work again after tons of attempts:
Unplug the USB-C to HDMI dongleOpen Device Manager of Windows 10, navigate to MonitorsRight click on it then choose: Scan for hardware changesWait till it finished scan, plug the dongle back, and re-do the same thing: Scan for hardware changes
Wola, the display comes back like magic!
All right, the magic is to find the root cause:
Critical Intel Thunderbolt Software and Firmware Updates – ThinkPad
Symptom
Systems may experience any of the following symptoms:
- USB-C port not working
- Intel Thunderbolt controller not visible in the OS/Device Manager
- USB-C or Thunderbolt docking stations not visible or having connectivity problems
- HDMI output not available
- System battery not charging with a USB-C power adapter connected to the USB-C port
- Intel Thunderbolt pop-up error message
- Intel Thunderbolt safe mode error message
- BIOS Thunderbolt communication error or hang during POST
These symptoms may occur after 6 to 12 months of typical usage.
Update the new firmware and higher driver package solve the problem
