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. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1534374 Title: unable to upgrade to 15.04 due to libstdc++6 SRU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1534374/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs