On Tue, May 20, 2025 at 07:22:04PM +0200, Denis Benato wrote: > This is the very same exact kernel, minus the patch in question: > https://pastebin.com/rwMYgG7C > > Both previous kernel and this one have CONFIG_PCI_DEBUG=y. This log excerpt shows that the ASMedia Thunderbolt controller below the Intel Thunderbolt controller couldn't be enumerated on boot: mag 20 18:42:20 denis-pc kernel: pci 0000:03:01.0: broken device, retraining non-functional downstream link at 2.5GT/s mag 20 18:42:20 denis-pc kernel: pci 0000:03:01.0: retraining failed However, the Thunderbolt tunnel goes up and the devices are enumerated 24 seconds later: mag 20 18:42:44 denis-pc kernel: pcieport 0000:03:01.0: pciehp: Slot(1-1): Card present mag 20 18:42:44 denis-pc kernel: pcieport 0000:03:01.0: pciehp: Slot(1-1): Link Up Thanks, Lukas