OP
wlgoode
Guest
Try interrupting your GRUB boot and insert the command "nomodeset" (without the quotes). This has helped me on Ubuntu/Mint black screen issues in the past... hope it helps you too. If it works, you can add it to your permanent GRUB boot options and keep Petra.
Tried nomodeset and F10 by adding it to the end of line 13 beginning with "linux" still black screen