When I try to encrypt, I get through the confirmation steps, enter my password and select "Encrypt device." It immediately goes to a black screen with the Android encryption logo (attached), and then a few seconds later the phone reboots to my home/login screen. No encryption.
I've read through quite a few threads from people having similar problems. I'm aware of the problem with trying to install Safestrap on encrypted devices so I tried uninstalling Safestrap but that didn't help. I've also tried the following: retry right after boot, use Airplane mode, stop running apps, unfreeze bloatware, factory reset (tried both from within Android and from the stock recovery menu, both retains root). The only thing I haven't tried is unroot, but I've read that encryption should work with root.
Any other ideas? Thanks.