Release Notes for Linux Mint 15 Xfce
This is Linux Mint 15 Xfce, codename Olivia.
PAE required for 32-bit ISOs
The 32-bit ISOs of Linux Mint 15 use a PAE kernel. If your processor is not compatible with PAE please use Linux Mint 13 Maya LTS instead. Linux Mint 13 is supported until 2017.
If your system is using secureBoot, turn it off.
If you installed Linux Mint in Virtualbox in EFI mode and it cannot boot post-install, type "exit", choose "Boot Maintenance Manager", "Boot from file" and select EFI/linuxmint/grubx64.efi.
Post-installation, the EFI boot file is located in /boot/efi/EFI/linuxmint/grubx64.efi. If your system is unable to find this file, copy it to /boot/efi/boot/bootx64.efi (alternatively you can write "fs0:\EFI\linuxmint\grubx64.efi" into a /boot/efi/startup.nsh file).
Linux Mint 15 is based on Ubuntu 13.04. Make sure to read the Ubuntu release notes.
Local repository and GnomePPP
GnomePPP is not installed by default but it is present within the default installation of Linux Mint. Your Linux Mint system comes with a local repository which is disabled by default. You can enable it by using the "Software Sources" tool from the menu. This repository contains GnomePPP as well as a collection of drivers.