Reinstall AVD on Ubuntu 16.04 Emulator was not installed upon installing Android Studio. Here is the error when I call tools/android/avdmanager: 

sh: 1: glxinfo: not found
sh: 1: glxinfo: not found
libGL error: unable to load driver: nouveau_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: nouveau
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  24 (X_GLXCreateNewContext)
  Value in failed request:  0x0
  Serial number of failed request:  33
  Current serial number in output stream:  34


After a while, I am seeing a new error in a window popup

Cannot launch AVD in emulator.
Output:
libGL error: unable to load driver: nouveau_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: nouveau
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
X Error of failed request:  GLXBadContext
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  6 (X_GLXIsDirect)
  Serial number of failed request:  49
  Current serial number in output stream:  48
libGL error: unable to load driver: nouveau_dri.so
libGL error: driver pointer missing
libGL error: failed to load driver: nouveau
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
X Error of failed request:  GLXBadContext
  Major opcode of failed request:  155 (GLX)
  Minor opcode of failed request:  6 (X_GLXIsDirect)
  Serial number of failed request:  49
  Current serial number in output stream:  48
I am using Android Studio 2.1.1 and Ubuntu 16.04 (x64). The following solved the problems (sh: 1: glxinfo: not found and libGL error:.) for me.


$ sudo apt-get install lib64stdc++6 (if it is not installed)
$ cd ~/Android/Sdk/tools/lib64/libstdc++
$ mv libstdc++.so.6 libstdc++.so.6.original
$ ln -s /usr/lib64/libstdc++.so.6 ~/Android/Sdk/tools/lib64/libstdc++
$ sudo apt-get install mesa-utils (if it is not installed)