My Laptop (thinkpad T480S) runs Fedora 32 (installed recently … from zero, new system), But when it mount on my Thunderbolt Lenovo Dock, it works normally until the system sleep, when I work again, my second screen never wake up ( Black screen like signal off) and finally my system get freeze … hard reset is necessary.
In some Lenovo Forums recommended (only windows useres) Update the thunderbolt Firmware.
Help me, I love my Latop Dock and all my external devices.
I have a ThinkPad T480 and my thunderbolt ports are working for recharging, but not for USB-C communication. I have read it is a known bug in Lenovo’s thrunderbolt firmware for almost all the ThinkPad series laptops, and I have seen they are constantly releasing new firmware versions for all their models through fwupd. An update for the T480 thunderbolt firmware has been released on April, 16, Windows version only. I think in the next few weeks (maybe days!) we will receive the corresponding Linux version.