Ian Li, thank you for reporting this and helping make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal: apport-collect 1395584
** Package changed: nautilus (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1395584 Title: File transfer will become slowly or stop when switch DC to AC during transfer files from internal HDD to external storage on Notebook. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1395584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs