02-08-2019 05:50 AM
Got a sealed refurb from Lenovo, Thinkpad X1 Extreme 20MF000DUS.
Updated everything from Lenovo + Windows (including BIOS to 1.18 )
I have an external USB-C gen2 monitor (single cable for Video+power) Works absolutely great on older Yoga...
On this X1 Extreme machine it would sometimes work, but 80% of the time would not. Monitor gets power, but no signal.
It would also spit out error of USB device not recognized and this in device manager:
Windows has stopped this device because it has reported problems. (Code 43)
A USB port reset request failed.
Also, sometimes it would show this in device manager under UCSI USB controller when monitor is plugged: Windows has stopped this device because it had reported problems (code 43)
External USB-C hard drive works... on Thunderbolt.
The long list of things I have tried to make monitor work:
Uninstalling usb drivers / rebooting machine.
Trying both Thunderbolt ports
Trying a different cable
Running Vantage diagnostic
Manually installing latest chipset driver
Disabling security for Thunderbolt in BIOS
Setting a power plan for maximum performance
Disabling power savings in USB ports
Talking to absolutely ridiculous Thinkpad for nearly 2 hours without even trying to troubleshoot my problem.
What I found a bit strange:
There are no dedicated (separate) USB drivers on Lenovo support page for my laptop. The USB driver dates are 2006 in device manager... I do not believe there were any USB-C laptops 12 years ago...
Can anybody suggest something useful to try before this machine gets shipped to mothership?
02-25-2019 06:39 PM