Thunderbolt 4 Dock (40B0) Linux display and boot problems
I'm running Fedora 39 with no issues on a new Thinkpad Z13 Gen 2 (AMD). If I use a USB-C to DisplayPort cable direct from the computer to the monitor, everything is fine.
I have two symptoms when using the 40B0 dock with it.
- At boot time, the system will hard lock on the GRUB screen. To work around this, the dock has to be connected after Linux has already booted.
- No signal is sent to the monitor from the Display Port on the Dock. However, Linux recognizes the display and reports the correct resolution and refresh rate supported by it.
I updated the firmware/bios on both devices out of the box on Friday night. Everything else on the dock seems to work as expected.
Has anyone used this device with Linux successfully? It's only a couple days old, I'll return it if I have to. Hoping it's just a kernel parameter or something simple.
I think I've seen some "linux isn't supported" type replies around this forum, but the solutions page about this device says Fedora 36.