As an addendum, I guess I will wait until the transition to Ubuntu 16.04 for my tablet before filing a bug report to calibre upstream. I wouldn't want the developer to spend time on a platform that is about to be deprecated.

I am a recovering geek who mistakenly thought biology would be my calling, and while stumbling through grad school, still found time to spend an inordinate amount of time learning about Linux, and open source software and hardware.

My first smartphone was a the FirefoxOS-powered ZTE Open C, and the second phone is my Nexus 5 which is currently running LineageOS. I have the M10 FHD which I am willing to use as a test device for the latest images.

I enjoy using the latest software and find reporting bugs and seeing them resolved to be a very rewarding experience.