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No meaningful message showed on the kernel > boot screen. > > A bisect revealed the culprit to be > > commit f1bfb4a6fed64de1771b43a76631942279851744 (HEAD) > Author: Mathias Nyman > Date: Fri Aug 30 18:26:29 2024 +0300 > > usb: acpi: add device link between tunneled USB3 device and USB4 Host Interface > > A revert of this single patch "fixes" the issue and I can boot again. > > The system in question is a Thinkpad T14 with a Ryzen 7 PRO 6850U CPU. > It's running Arch Linux but I doubt that's of consequence. > > lspci output: > https://gist.github.com/hwentland/59aef63d9b742b7b64d2604aae9792e0 > acpidump: > https://gist.github.com/hwentland/4824afc8d712c3d600be5c291f7f1089 > > Mario suggested I try modprobe.blacklist=xhci-hcd but that did nothing. > Another suggestion to do usbcore.nousb lets me boot to the desktop > on a kernel with the faulty patch, without USB functionality, obviously. > > I'd be happy to try any patches, provide more data, or run experiments. > > Thanks, > Harry FWIW I did take another Lenovo laptop (Z13) w/ a CPU from the same generation (Ryzen 5 PRO 6650U) and 6.12-rc1 but can't reproduce this issue.