Android Virtual Device Problem
My Android virtual devices were not running in Android Studio 2.3.1 - Ubuntu 17.04 - Intel i3 processor that uses the i915 kernel modules.
To troubleshoot the problem I tried running the emulator from the command line.
~/Android/Sdk/emulator/emulator -avd Pixel_XL_API_25
The following error message was at the top of the output.
libGL error: unable to load driver: i965_dri.so
After some googling I remedied the situation by creating the following symbolic link.
ln -sf /usr/lib/libstdc++.so.6 ~/Android/Sdk/emulator/lib64/libstdc++/libstdc++.so.6