Jery Wang, thank you for reporting this bug to Ubuntu. Hardy Desktop reached EOL on May 12, 2011. See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases
Is this an issue in a supported release? If so, could you please execute the following command, as it will automatically gather debugging information, in a terminal: apport-collect 211760 ** Attachment removed: "This image is to show 2 of them , namely dban-1.0.7 & floppy0 shows at the same time. Also it shows that USB drives are usable in Hardy." https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/316717/+files/Notice%20there%20is%20a%20dban-1.0.7%20%26%20floppy0%20side%20by%20side.png ** Attachment removed: "Error message shows when I click on dban-1.0.7 instead of floppy0" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/316718/+files/Unable%20to%20mount%20dban-1.0.7.png ** Attachment removed: "log_part.txt" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/296827/+files/log_part.txt ** Attachment removed: "When I unmount any USB Device, this error shows." https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/316722/+files/Unmount%20USB%20Thumbdrive%20Error.png ** Attachment removed: "Image to show that USB device are not able to encode chinese filename" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/316723/+files/Notice%20that%20there%20were%2029%20items%20shown%20on%20the%20bottom%20left%20hand%20of%20this%20window%2C%20but%20in%20fact%20my%20MP3%20Player%20consisted%20of%20more%20than%2060%20music.png ** Attachment removed: "Unmount a floppy needs to be root" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/316724/+files/Floppy%20needs%20to%20be%20root%20to%20be%20unmounted.png ** Attachment removed: "Click on Floppy0 and this shows my content" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/316726/+files/My%20Floppy%20Content.png ** Attachment removed: "gvm.log" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/436168/+files/gvm.log ** Attachment removed: "lshal.txt" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/436169/+files/lshal.txt ** Attachment removed: "devices.txt" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/436170/+files/devices.txt ** Attachment removed: "dmesg.txt" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/436171/+files/dmesg.txt ** Attachment removed: "udev.log" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/436172/+files/udev.log ** Attachment removed: "grep -iE --color 'usb|sdb' /var/log/syslog" https://bugs.launchpad.net/ubuntu/+bug/211760/+attachment/676380/+files/log4.txt ** Package changed: ubuntu => linux (Ubuntu) ** Changed in: linux (Ubuntu) Importance: Undecided => Low ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/211760 Title: USB Thumb Drive can't mount anymore in Hardy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/211760/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs