Attached, dmesg of a 3.8.0rc3 kernel with xhci debugging enabled. The difference between the successful and failed load is that the line:
[ 18.995664] logitech-djreceiver 0003:046D:C52B.0003: hiddev0,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:14.0-4/input2 Is followed by different lines between fail and success. The lines before that are the same between success and fail except for the reported pointer addresses, and twice a "Cycle state = 0x0" for success, and twice a "Cycle state = 0x1" for fail (I haven't investigated what that can mean, and I'm not familiar with the code & protocol, but because it's consistent/always like that, it may be important). If success, the next 4 lines are: [ 18.996923] xhci_hcd 0000:00:14.0: ep 0x83 - asked for 32 bytes, 17 bytes untransferred [ 18.997550] input: Logitech Unifying Device. Wireless PID:4007 as /devices/pci0000:00/0000:00:14.0/usb3/3-4/3-4:1.2/0003:046D:C52B.0003/input/input18 [ 18.997800] logitech-djdevice 0003:046D:C52B.0005: input,hidraw2: USB HID v1.11 Keyboard [Logitech Unifying Device. Wireless PID:4007] on usb-0000:00:14.0-4:1 [ 18.998921] xhci_hcd 0000:00:14.0: ep 0x83 - asked for 32 bytes, 17 bytes untransferred If fail, the next 4 lines are: [ 17.947216] xhci_hcd 0000:00:14.0: Stalled endpoint [ 17.947231] xhci_hcd 0000:00:14.0: Cleaning up stalled endpoint ring [ 17.947232] xhci_hcd 0000:00:14.0: Finding segment containing stopped TRB. [ 17.947233] xhci_hcd 0000:00:14.0: Finding endpoint context I'm adding this to the bug report here, just in case somebody with more knowledge of the xhci or the hardware sees it and more quickly can point out what is wrong with this driver than me examining this for me still unfamiliar code in my spare time... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1039143 Title: 046d:c52b USB3 port Logitech mouse using unifying receiver not detected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1039143/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
