Could not open Selected VM debug port(8700) [Solved]

My Windows crashed this weekend so I switched over to Ubuntu 11.10 (Oneiric Ocelot) hoping to have the same( or even better) developing experience than in Windows 7. I planned this weekend for trying something new with the android animations but I had to totally rethink my plan. All my SDK ecosystem has been totally lost. Last time this happened was when my laptop crashed but this time its with my desktop(actually a laptop turned in to desktop, lets come to this later). It took me almost one day to download, install, update and configure the OS. Moreover I had to setup my Eclipse IDE and Android SDK which is an elaborative procedure.

Anyway finally I had everything up and running. But I had to face a different kinda problem with Eclipse running in gnome. I believe its more specific to this gnome desktop but occasionally this problem occurs in Windows too it seems from the android forum posts.

The issue is this

1)I run Eclipse.

2)Launch the emulator.

3)Now close the Eclipse alone but the emulator is still running.

4)Launch the eclipse again.

5)Eclipse will open but it will throw an error stating “Could not open Selected VM debug port(8700)” and you wont be able to proceed further with using your IDE.

Error Screen in Eclipse 3.7.0 running in Ubuntu 11.10

I searched through a lot of forum posts related to this issue. All of them pointed out to changing your debug port number to something else other than 8700. But it wont help. This issue basically caused by two instances of DDMS(running from two instances of Eclipse) trying to access the port 8700. So one quick way to check this is from your System Monitor. Launch the System Monitor when this error is displayed, you could see two instances of Eclipse running. So as far as I am concerned one possible fix is to close emulator also whenever you close the Eclipse and also to check for other instance of Eclipse when trying to launch it.

System Monitor showing two instances of Eclipse

In Windows this is not the scenario. Whenever you close and relaunch Eclipse without closing the emulator, the IDE will reconnect with the available active emulator. This is the feature I miss most in Ubuntu. Hope Eclipse team will do something to fix it.

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