I have tried the Quantal package (1.1.3-35-g0ece104-2ubuntu1) of libmtp on my lubuntu 12.04.1 which include the patch for the S3.
$mtp-detect libmtp version: 1.1.3 Listing raw device(s) Device 0 (VID=04e8 and PID=6860) is a Samsung GT P7310/P7510/N7000/I9070/I9100/I9300 Galaxy Tab 7.7/10.1/S2/S3/Nexus/Note/Y. Found 1 device(s): Samsung: GT P7310/P7510/N7000/I9070/I9100/I9300 Galaxy Tab 7.7/10.1/S2/S3/Nexus/Note/Y (04e8:6860) @ bus 1, dev 16 Attempting to connect device(s) PTP_ERROR_IO: failed to open session, trying again after resetting USB interface LIBMTP libusb: Attempt to reset device LIBMTP PANIC: failed to open session on second attempt Unable to open raw device 0 OK. The description now include "I9300/S3" but still can't connect and timeout with the same error. However it's work for me now ! I have noticed that if you launch mtp- detect right after plugging the USB cable (after the sound on the S3) then you can connect. I don't know if the upgrade help but maybe not. The same is right with gmtp. You plug the USB cable and just after the sound, you click on "connect". I was able to browse all the file system and download file. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1015010 Title: Cannot connect to Samsung Galaxy S III To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libmtp/+bug/1015010/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs