Okay, I am not certain if this will work in your case, but I have used it in a couple of similar cases and it worked for me.
When you have that Grub Menu up, highlight the Installation entry, but do not click it. Instead, hit the “e” key and add some parameters to the command line.
At the end of that line, add a space, then add:
self_update=1
This updates the Updater for any hardware-related fixes or so forth. This means when you actually start the installer, you will need to wait a few moments or a minute or two for the updates to be downloaded, but not long. It will look like it stalled, but it has not, just wait those moments.
First, though before continuing …
Add another space, then also add this at the end of the line:
Textmode=1
This will give you the slightly less-pretty ncurses version of the installer, otherwise functions the same, not that difficult to use, but avoids most graphical hardware issues with the installer.
When I used this method, my first boot after install brought me up into openSUSE and the installed Desktop as I expected to see it.
It is up to you, but you might want to try just the self_update option at first, and if that does not work, then try both options.