>From the 'lsusb' log, the usb disk should be a USB 2.0 device, and we can compute the write speed is about 2.56MB/sec(ubuntu) or 4.26M/sec(upstream).
It is hard to see it is a hardware problem or software bug. Could you do the same test(write same file on same usb disk + safely remove) on windows to see if it is quicker than linux? If it is much quicker on windows, please try to get the usbmon trace[1] to help troubleshoot the problem. [1], http://www.mjmwired.net/kernel/Documentation/usb/usbmon.txt Thanks, -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1071708 Title: Copying to a USB device is extremely slow. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1071708/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
