03-24-2018 08:54 AM - edited 03-25-2018 05:37 AM
Thunderbolt port of my P51 work well before I upgrade thunderbolt fw to the latest version on lenovo CN site (nvm 15) and win10 1709 fall creator.
After these two upgrade, any usb (via type c) product cannot be recoginazed e.g. external ssd storage, cellphone. In device manager I can see Thunderbolt(TM) Controller - 15D9 isn't connect to computer, and no resource use by TB controller.
I don't know if HDMI port on P51 throughout TB device like P50, but my HDMI port works well now.
Is that an individual case just for me or anyone else has this issue too?
In addition, I have BIOS upgraded from 1.16 to 1.20. What makes me think about it can be seen attached. We I use thunderbolt flash tools, tb controller online after TBT_PWR and PD controller check, which means tb controller can be wake up by TBT_PWR feature in bios, but unfortunately it's power off all the time.
So, is there something wrong with 1.2.0 bios or tb firmware provided by lenovo?
03-27-2018 06:18 AM - edited 03-27-2018 09:18 PM
I found when I connect my phone by c-c wire, there is a Inter USB 3.1 extensible host controller -1.1 device online, and 4 PCI to PCI bridge device in system device node online.
It seems that thubderbolt power supply module has something wrong, no power offer to external devices.
Still no response when I connect my usb-c mobile SSD.