This bug is missing log files that will aid in diagnosing the problem. >From a terminal window please run:
apport-collect 1630063 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1630063 Title: specific USB devices disconnect and don't reconnect Status in linux package in Ubuntu: Incomplete Bug description: 2 USB ports randomly disconnect and don't reconnect (it's always the same two), and in dmesg all I get is " [ 1276.916458] ohci-pci 0000:00:12.0: HcDoneHead not written back; disabled [ 1276.916467] ohci-pci 0000:00:12.0: HC died; cleaning up [ 1276.916553] usb 3-1: USB disconnect, device number 2 [ 1277.017302] usb 3-2: USB disconnect, device number 3 " This only started happening when Yakkety went to the 4.8 branch, with 4.7 branch this doesn't occur, hence the bug report since it's unlikely that a hardware failure will only stick to one OS and one branch of the kernel for that OS. (these USB ports don't randomly die on Windows or BSD, I've tested that in the past couple of days) kernel version: 4.8.0.17.27 Ubuntu version Description: Ubuntu Yakkety Yak (development branch) Release: 16.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1630063/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp