Re: Lenovo ThinkPad X1 Carbon Gen6 (NM-B48) Thunderbolt issue



I tried to flash this dump and unfortunately it did not make any difference.



I also tried to remove the battery and push the internal reset button with the dump above but I did not boot it with a zeroed out flash first. Maybe I'll try this with the latest TBT.bin.

My shitty sop8-clip is wearing out hehe
But with a new chip in place I can rule that out.

I also noticed that I'm able to see the TBT firmware version in the UEFI "system diagnostic"...

Re: Lenovo ThinkPad X1 Carbon Gen6 (NM-B48) Thunderbolt issue

Thank you for trying to help but I should be able to see a PCIe interface on the bus even if I don't have any drivers for it. That is why I mentioned I could not se it in lspci (you can compare that to the device manager on windows where it is also not present)

This was working fine when the laptop was new. The hardware needs to be present and detected on the PCI bus in the system for drivers to have any effect....

Re: Lenovo ThinkPad X1 Carbon Gen6 (NM-B48) Thunderbolt issue

I don't think this is a software issue because I'm getting it in both windows and Linux.
And if I disable thunderbolt in the bios it goes away. (this flicker is on the built in screen)

But the real problem is that the thunderbolt interface is not detected at all in windows or linux.
That is not a driver issue because it should show up without any drivers even as a pci interface

Re: Lenovo ThinkPad X1 Carbon Gen6 (NM-B48) Thunderbolt issue

I ended up swapping out the flash chip and it did not help more than the first reflash I did.

Still no thunderbot but charging works and usb works on the usb-c port.
The thunderbolt ports are still not visible in the OS either in bios assist och native mode.
When switching between the bios assist and native modes the bios says it would take 15sec but it doesn't really and is quite instant.

Re: Lenovo ThinkPad X1 Carbon Gen6 (NM-B48) Thunderbolt issue

From googling what that is I don't think there is one.

The the thunderbolt controller is JHL6540.

Hi!

My Thinkpad X1gen6 (NM-B48) have had issues with thunderbolt for over a year now. No TB3 or HDMI working and the screen randomly flickering sometimes but going away other times. As if there was a glitch in the connection.

When it was starting to fail I switched between assist mode and the non assist mode a lot because I didn't understand what was going on and some times it helped. (but really it probably made it worse by writing more to the flash) At one point when it had failed a switch like that hung the laptop with a black screen and I had to hard reset. That...

Re: New Members - please post your introductions here

Hi there! Joined to try to fix my Thinkpad x1c6 thunderbolt issue.