Having trouble connecting a recent Google nexus device eg Nexus 4 7 or 10 to Ubuntu 12.04?

Having trouble connecting a recent Google nexus device eg Nexus 4 7 or 10 to Ubuntu 12.04?

Yeah me too.

Here's what worked for me 

NB:
1. there was a minor error - needed a 'sudo' on step 6 part b - the chmod command
2. I added the Dev Options and USB debugging instructions
3. I added a 'turn off USB debugging' when you're done, instruction

Here's how:
1. Enable Developer options and enable USB debugging
  goto Settings
  scroll to Build Number
  tap repeatedly about 7 or more times
  go back to settings and you should Developer Options
  go in and enable USB debugging

2. Install necessary modules to your computer:
sudo apt-get install mtp-tools mtpfs

3. Configure 51-android.rules:
sudo gedit /etc/udev/rules.d/51-android.rules
paste the following at the end of the file (if the file does not exist then just paste):
#LG - Nexus 4
SUBSYSTEM=="usb", ATTR{idVendor}=="1004", MODE="0666"
#Samsung - Nexus 7 & 10
SUBSYSTEM=="usb", SYSFS{idVendor}=="18d1", MODE="0666"

Save and exit.

4. Make the file executable:
sudo chmod +x /etc/udev/rules.d/51-android.rules

5. Restart udev
sudo service udev restart

6. Create mount point and permissions (will need to do this for other Nexus' if using for the 7 or 10)
sudo mkdir /media/nexus4
sudo chmod 755 /media/nexus4

7. Plug in the Nexus 4 and make sure MTP is enabled.

8. Mount with the following command:
sudo mtpfs -o allow_other /media/nexus4

9. When you have completed your work you must unmount:
sudo umount /media/nexus4

10. When done turn off USB debugging - it tightens up your security

Now each time you need to copy from/to your Nexus 4 to your Linux computer you only need to plug in and run 8, then 9 when you have completed your work.

http://forum.xda-developers.com/showthread.php?t=2004182