Here is a quick guide on adding a Grub parameter, though you will not be adding nomodeset - substitute that with the parameter(s) you will actually be using
Then arrow key down to change the value to 2
(I thought this was tried already early in the thread...)
Once 3 is changed to 2, tap ctl+o to overwrite, then enter to save as current configuration
Tap ctl+x to eXit the editor.