Using Ubuntu 15.10 I am not able to emulate an Android device using any x86 images.
The emulator starts but the screen stays black. Using an ARM image works.
From what I found it seems to be related to some 32Bit libraries missing. But I was not able to locate the missing once.
The log looks like this:
/home/christian/Android/Sdk/tools/emulator -netdelay none -netspeed full -avd Nexus_5X_API_23 emulator: UpdateChecker: skipped version check