I'm seeing the same thing in 13.04 w/ Samsung Galaxy Note. It used to work fine, but after upgrading from 12.10->13.04 and from ICS->JB, this device is unusable from Ubuntu. Dual boot to Windows and it works fine.
Linux hydra 3.8.0-23-generic #34-Ubuntu SMP Wed May 29 20:22:58 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux Attached file is log from plugging device in for just a moment. If I leave it connected, I will get a never-ending stream of popups that look like "Unable to open MTP device '[usb:003,021]'" with 021 rotating between all numbers up to 127 and then starting over. I believe that is caused by the constant flow of: Jun 8 07:11:52 hydra kernel: [ 525.282788] usb 3-4: reset high-speed USB device number 3 using ehci-pci Jun 8 07:11:52 hydra kernel: [ 525.362789] usb 3-4: USB disconnect, device number 3 ** Attachment added: "Log showing device being reset" https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/88746/+attachment/3698091/+files/bug88746.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/88746 Title: ehci_hcd module causes I/O errors in USB 2.0 devices To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/88746/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs