I'm currently facing this issue on Ubuntu 16.04 too, on a GTX 980 with nvidia-364 driver (tough its the same on all versions I tried).
I can boot with fail safe graphics mode, but not normally.
Trying to fix this with
GRUB_GFXPAYLOAD_LINUX=wxh or GRUB_GFXPAYLOAD_LINUX=text
has no effect, I'm left with a passphrase entry screen that displays all entered text on the top left, entering my passphrase here does not work.
I'm currently facing this issue on Ubuntu 16.04 too, on a GTX 980 with nvidia-364 driver (tough its the same on all versions I tried).
I can boot with fail safe graphics mode, but not normally.
Trying to fix this with
GRUB_GFXPAYLOAD _LINUX= wxh _LINUX= text
or
GRUB_GFXPAYLOAD
has no effect, I'm left with a passphrase entry screen that displays all entered text on the top left, entering my passphrase here does not work.