http://bugzilla.suse.com/show_bug.cgi?id=1161754 Bug ID: 1161754 Summary: [usb-c] System loses USB NIC in Docking Station at random Times Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.1 Hardware: Other OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: oneukum@suse.com Reporter: eich@suse.com QA Contact: qa-bugs@suse.de Found By: Development Blocker: --- Created attachment 828223 --> http://bugzilla.suse.com/attachment.cgi?id=828223&action=edit Kernel log On a laptop (Dell Precision 5520) the 1GB NIC is contained in the docking station which is connected via USB-C. With kernel 4.12.14-lp151.28.36-default this device gets 'lost' at random times. 1. The kernel shows no obvious signs of the device getting lost. The lines like: usb 3-1.4: reset high-speed USB device number 6 using xhci_hcd don't seem to occur when the device gets lost. 2. The network device is no longer disappears from the lsusb output. 3. In the more annoying cases, the network device 'hangs': and 'ip addr' hangs in a 'sendto' to a netlink socket. In other cases, the device disappears from the 'ip addr' output, unplugging and plugging the docking station causes the devices to re-enumerated. NOTE: in the attached log, the re-docking happens after the 202556.480017 timestamp. The issue seems to start once the machine has been suspended and/or redocked after a boot. The issue did not occur on a Leap 42.3 kernel. -- You are receiving this mail because: You are on the CC list for the bug.