Responsive to native development tools does not work in Android emulator

Question

I used to open dev interactive development tools on my Android emulator (AVD) using ctrl + M.

But lately, it has stopped working.

I tried to change the set of androids, but that did not help.

I set a breakpoint inside the java code, and I noticed that I didn’t get a keystroke for ctrl + M or other control keys (I got for other keys).

I use UBUNTU 14.0.4, the Android SDK 25.1.6 manager, I am responsible for the native 0.24.1.

Please, help.

thank