I was checking out the 6.12 rc1 (through drm-next) kernel and found
my system hung at boot. No meaningful message showed on the kernel
boot screen.
A bisect revealed the culprit to be
commit f1bfb4a6fed64de1771b43a76631942279851744 (HEAD)
Author: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
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
