Comment 4 for bug 1534374

I abandoned the release-upgrader route for upgrading from root encrypted 14.04 LTS pretty quickly. I later tried to upgrade by downloading to a USB key and reinstalling. However, the current Ubuntu 15.04 and 15.10 has a problem with broken encryption. So, encrypting partitions was broke in a way that made it very difficult to know why the install wasn't working.

Root encrypted 14.04 LTS had always been a problem for me. It would boot up in a way that left the screen blank. In order to unencrypt to complete the bootup, I had to ALT-CTRL-F6 then ALT-CTRL-F7 to get it to ask for the encryption key.

What forced me to try to upgrade was that the (Broadcom) WiFi broke, and I forgot that I had read that updates and upgrades may break the WiFi that was installed.

It would also crash on occasion when suspending (after several suspensions).

So, I reverted to an unencrypted install of 14.04 LTS (Trusty Tahr). Then, when creating the user account, I selected the option for encryption of the user directory. Much easier. And the machine is now much more reliable.

So far, I have done more than several suspends and it has been rock solid.