Hello:
On a vintage VAIO I have no problems with amd64 stretch. With a raid1-based on the X79 chip, upgrading from jessie to stretch (I need a higher CUDA version than available on jessie for latest experimental NAMD molecular dynamics) went on regularly. However, the command
# systemctl set-default multi-user.target
(which worked fine on said VAIO to boot at the $ linux prompt) led to failure to connect to lvmetad, falling back to device scanning, whereby an endless disk scanning begun.