I cannot get the phone to show up when plugged into a USB hub. It isn't simply that MTP is not working, but that the USB connection doesn't even show up in dmesg. I have android debugging turned on and have tried to connect via adb in recovery also. In no situation have I been able to establish any sort of USB connection since changing to M3. Setting/toggling MTP under settings>>storage>>menu>>USB computer connection also fails.
I have also tried to connect from my Win 7 partition and nothing shows up at all.
Does anyone have any suggestions other than going back to 10.2?