There was recently a change to the adb tool. It now does authentication; the user is prompted to "allow" a new computer when the phone is connected to it. The old adb is not compatible.
This change is probably why it fails, even though MTP on the Samsung Galaxy Nexus previously worked. I used the new adb (with the authentication) to manually push files. That worked fine. Trying the other forum posts (like changing the udev rules) did not work for me. It was very aggravating to get the cool new phone (Nexus 4) and then not be able to transfer files to it. (This comment reposted from duplicate bug 1092621.) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gvfs in Ubuntu. https://bugs.launchpad.net/bugs/903422 Title: Ubuntu does not work with Samsung Galaxy phones (Unable to open raw device 0) Status in GVFS: Fix Released Status in “gmtp” package in Ubuntu: Invalid Status in “gvfs” package in Ubuntu: Fix Released Status in “udev” package in Ubuntu: Invalid Status in “gmtp” source package in Precise: Invalid Status in “gvfs” source package in Precise: Confirmed Status in “udev” source package in Precise: Invalid Status in “gmtp” source package in Quantal: Invalid Status in “gvfs” source package in Quantal: Confirmed Status in “udev” source package in Quantal: Invalid Bug description: If your device is not supported please open a new bug specifying: * device in question (make / model / release) * output of `mtp-detect` when the device is attached * output of `lsusb` when the device is attached This bug will be a catch all for recent Samsung Nexus & Nexus 7, or please comment what other recent Andorid 4.x devices are affected. Yes there is a lag in providing support for the most recent devices. As soon as the fixes are available, SRUs will follow. To manage notifications about this bug go to: https://bugs.launchpad.net/gvfs/+bug/903422/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

