M1 MBP (MacBookPro17,1): Thunderbolt dock not enumerated at all - no display, USB, or LAN

[tacking6552]

System

• Device: MacBook Pro 17,1 (M1, 2020)
• OS: Fedora Asahi Remix
• Kernel: 6.18.10-402.asahi.fc42.aarch64+16k
• Dock: Elgato Thunderbolt 3 Pro Dock

Problem

Elgato TB3 Pro Dock is not detected at all when connected.
boltctl list returns empty. kscreen-doctor --outputs shows only internal display (eDP-1).

Relevant kernel log

Repeated on every power cycle / resume:

IOAVVideoInterface open failed
set_digital_out_mode returned 8000000b
set_digital_out_mode finished:8500

No Thunderbolt enumeration events visible in dmesg when dock is connected.
Full dmesg attached.

Additional findings

The dock is not recognized at all - not as Thunderbolt, not as USB device.

• lsusb returns empty with dock connected
• boltctl list returns empty
• ip link show shows no ethernet interface

All dock functionality is unavailable:

• External display: not working
• LAN (USB ethernet): not working
• USB audio: not working

The Thunderbolt controller does not enumerate the dock at all.

dmesg-external-display.txt