and installed a system with 'encrypted disk with LVM' according to the choice in the partitioning window of the installer. It had a working plymouth screen when I booted in the installed system. I updated & upgraded the system to be up to date with the kernel 4.4.0-43-generic. After reboot there is still a working plymouth screen. See the attached photo (sorry for the low quality ).
In order to check this I grabbed the iso file
ubuntu- 16.04.1- desktop- amd64.iso
and installed a system with 'encrypted disk with LVM' according to the choice in the partitioning window of the installer. It had a working plymouth screen when I booted in the installed system. I updated & upgraded the system to be up to date with the kernel 4.4.0-43-generic. After reboot there is still a working plymouth screen. See the attached photo (sorry for the low quality ).
I tested this in a Toshiba laptop bought 2013,
http:// www.toshiba. se/laptops/ satellite- pro/c850/ satellite- pro-c850- 19w/
Is this what you are missing? Please try to install from the first point release (16.04.1 LTS).