I just upgraded to 16.04 on my old computer, and it has this problem. It was a nasty installation because of some unfixed bug that appears to have been around since 2004 where it doesn't install sysv-rc.
But consequently, one of my accounts was really wonky, but another one was less so. I think they both had admin privileges, but added the good account to the sudo and root groups and moved all my files. I was hoping to delete the wonky account, but when I open Synaptic Package Manager, the password is grayed out. Synaptic doesn't offer flashback in the 3.22 (only 3.18.2-1ubuntu1.) I downloaded this 3.22.1 package, but I am a bit out of my depth in how to install it. I clicked the install file, which goes on about the shell command. It also says that you should follow the instructions in the README, except the README was blank (0 bytes.) Maybe I will just have to live with this till the 3.22 version is available through synaptic. Like one of the gentlemen here mentioned, I also discovered that if I picked another user and then went back to my own user name that it was no longer grayed out. But I actually changed that other account from Administrator to a normal account, so there are no longer two administrators, but I still have to flip to the other account and back before it will let me enter my password. That seems so odd, considering that I added this account to the sudo and root groups. It seems like it should trump the other account, but instead I can't even enter the password without it. Anyway, wish I understood the instructions better. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1698994 Title: Authentication Agent "Authenticate" button incorrectly greyed out To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-flashback/+bug/1698994/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs