https://bugzilla.kernel.org/show_bug.cgi?id=219681 --- Comment #2 from dantmnf2@xxxxxxxxx --- > Are the working and not working ports on the same USB bus, or on different > ones? Perhaps two different types of USB controllers? They are on different controllers: # readlink /sys/bus/usb/devices/usb* ../../../devices/pci0000:00/0000:00:0d.0/usb1 ../../../devices/pci0000:00/0000:00:0d.0/usb2 ../../../devices/pci0000:00/0000:00:14.0/usb3 ../../../devices/pci0000:00/0000:00:14.0/usb4 # lspci ... 00:0d.0 USB controller: Intel Corporation Lunar Lake-M Thunderbolt 4 USB Controller (rev 10) ... 00:14.0 USB controller: Intel Corporation Lunar Lake-M USB 3.2 Gen 2x1 xHCI Host Controller (rev 10) ... > I wonder if any of that is preceded by low level USB errors? Maybe try again > with some dynamic debug: It do have some messages like "Stopped on Transfer TRB for slot 4 ep 6" and "Transfer error for slot 9 ep 0 on endpoint" > I presume this is not a regression and there are no kernel versions where it > works correctly? This is a relatively new platform and kernels before 6.12 cannot give a usable system. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.