Solving: insufficient permissions for device: user in plugdev group; are your udev rules wrong
This happens on Ubuntu almost each time I add a new device: Check that your are in plugdev group $ id uid=1000(alex) gid=1000(alex) groups=1000(alex),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),116(lpadmin),126(sambashare),127(kvm),129(libvirt),134(chrome-remote-desktop) If not (i.e. plugdev not displayed), add it: $ sudo usermod -aG plugdev alex If you get 'insufficient permissions for device: user in plugdev group; are your udev rules wrong' when trying to debug, you'll need to add your device: First i used lsusb to find my vendor id (here I guess google) $ lsusb Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub ... Bus 001 Device 025: ID 18d1:4ee7 Google Inc. .. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub .. Bus 001 Device 020: ID 05e0:2106 Symbol Technologies USB2.1 Hub As suggested in https://developer.android.com/studio/run/device.html the solution was to sudo gedit /etc/udev/rules.d/51-android.rules Add th...