That version is now dead
http://news.softpedia.com/news/ubuntu-17-04-zesty-zapus-has-reached-end-of-life-upgrade-to-ubuntu-17-10-now-519360.shtml
** Changed in: unity (Ubuntu)
Status: New => Invalid
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Bugs, which is su
** Description changed:
My display freezed and I had to forcefully restart my laptop.
Since then, my applications and some UI elements are rendered darker
than usual for no apparent reason. Not all applications are affected.
For example, Firefox, LibreOffice are not affected. GNOME Term