Comment 26 for bug 986722

same issue confirmed here on ubuntu 12.10 with latest updates when in camera mode
I am using a Galaxy Note 2.
In MTP mode i get time outs, mtp-detect says :

ubuntu@ubuntu-Latitude-D630:~$ mtp-detect
libmtp version: 1.1.4

Listing raw device(s)
   No raw devices found.
ubuntu@ubuntu-Latitude-D630:~$

on MTP mode i get:
ubuntu@ubuntu-Latitude-D630:~$ mtp-detect
libmtp version: 1.1.4

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 2, dev 7
Attempting to connect device(s)
PTP_ERROR_IO: failed to open session, trying again after resetting USB interface
LIBMTP libusb: Attempt to reset device

On MTP mode there are timeouts. In Camera mode, only the internal file sytem of the phone is mounted, not the SD.
After some Time, gMTP seems to work, the bug seems to be that it takes such a long time.
It seems to be fixed in Fedora 17 and this solution is also quick for me (but less likable):
http://www.webupd8.org/2012/12/how-to-mount-android-40-ubuntu-go-mtpfs.html