I'm having this same issue as well, have been for close to two weeks. I just downloaded a fresh ISO and attempted everything from scratch. Here's all the info:
Hardware:
- CPU: AMD Ryzen 7 2700x
- GPU: NVIDIA GTX 1070
- MOBO: ASUS Crosshair VII Hero (Wi-Fi) - AHCI enabled, booting with UEFI, secure boot turned off/set to "Other OS"
- SSD: 512 GB NVMe
Tried two installs; one created with Rufus following the steps in the help center, and another created with Etcher (results were the same). All install steps were kept at their defaults (for me) and both installs were done with the "erase disk/auto partition" option selected. Both installs went fine with no errors.
After rebooting and logging in, all packages are updated through the software center. Reboot again just to make sure everything is good and open hardware manager. Detects what drivers I need fine, and also select to install 32 bit libs with it. Installs fine, reboot... black screen with a cursor.
I would definitely like to get this working, if I can be of anymore help or test various solutions I'm definitely happy to do so!