Htc Desire Usb Connection Issue With Ubuntu 10.04

I want to connect my HTC Desire with Ubuntu 10.04 for app debugging. But i am getting the following message upon running the command adb devices List of devices attached ?????????

Solution 1:

First of all check if you have a rule for HTC devices. Here is good script for this.

Then check if device allowed for debugging (on device: settings -> applications -> development ).