I have a problem connecting HTC Wildfire A3333 in debugging mode with my Fedora Linux 17. Adb says:
./adb devices
List of devices attached
???????????? no permissions
my udev rules (first rule for Samsung which works just fine and second for HTC which is not):
SUBSYSTEM=="usb",SYSFS{idVendor}=="04e8",SYMLINK+="android_adb",MODE="0666",GROUP="plugdev"
SUBSYSTEM=="usb",SYSFS{idVendor}=="0bb4",SYMLINK+="android_adb",MODE="0666",GROUP="plugdev"
For Samsung devices everything's okay:
./adb devices
List of devices attached
00198a9422618e device
I have been trying all of the answers given in a simmilar thread wthout any luck: Using HTC wildfire for android development
I just had this problem myself under Debian Wheezy. I restarted the adb daemon with sudo:
sudo ./adb kill-server
sudo ./adb start-server
sudo ./adb devices
Everything is working :)