Comment 21 for bug 1696325

Thunderbolt support for PCs is included in v4.13-rc1 and later kernels. Do you have a possibility to try the latest mainline kernel?

Note the userspace support is not yet ready so you need to authorize device manually. See for example:https://www.kernel.org/doc/html/latest/admin-guide/thunderbolt.html how it can be done.