Running Debian 8.x VM in OSX El Cap. All my standard lower/upper case keys (à, é è, ä, ü etc.) work fine. Shift+numeric keys OK. But Alt key combinations (e.g., Alt+7 = pipe symbol) do not work. I have tried in the Debian Keyboard settings but cannot see why I can't get these to work properly. I'm pretty much of a Linux noob but have a grasp of the basics.
Language is set to English, Regional input is custom (international date/time, US units of measure, etc.). The Alt keys work properly on a RPi3 running Debian.
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