Ubuntu: Some users cannot install Chrome extension
Chrome < 31.0.1650.57 say: An error has occurred Could not install package: 'UTILITY_PROCESS_CRASHED_WHILE_TRYING_TO_INSTALL'
Unfortunaly Ubuntu is not so familiar with Chrome & Chrome plugins. There is a lot of bugs in Chrome working under Ubuntu. I don't know what can I do. I have tested PHP Console on 3 computers with Ubuntu and it works fine, but without buttons in notification popups (because Chrome uses native Ubuntu notifications that does not support button).
I hope Google will fix Chrome working on Ubuntu soon. All I can recommend you now - is to try old version of PHP Console, may be it will works on your Ubuntu https://groups.google.com/forum/?hl=ru#!forum/php-console-deprecated-version
I update Chrome version from 31.0.1599.144 to 31.0.1650.57 and problem resolved in ubuntu 12.04
It works for me using Chromium: Version 30.0.1599.114 Ubuntu 13.04