I'm using AndroidStudio 0.4.0 (encountered same problem on 0.3.2) on Ubuntu 13.10. Everything was ok till I lose the logcat Filtering utility and device choosing side bar in 'Android' and 'ddms ddms' views.
However the program recognize connected device/emulator and runs the app normally on it, it even shows all logs roughly, but I no longer can select device or filter the logs.
How can I recover them?
Thanks!
There is a way to make it appear. Just click the "Event log" label in the bottom-right of AS.
But it may will miss again in some case... I guess whether it's a bug of AS.
Same question, check this link: enter link description here
The problem seems to be rather based on Ubuntu packages auto-update. After searching all over internet this page helped out to recover the views.
http://karuppuswamy.com/wordpress/2013/10/23/how-to-install-android-studio-in-ubuntu-linux-13-10/
I installed these two packages and relaunched the Studio, everything works fine again.
sudo apt-get install libncurses5:i386
sudo apt-get install libstdc++6:i386
来源：https://stackoverflow.com/questions/21006416/android-studio-logcat-filter-does-not-show-up