http://ubuntu-tutorials.com/2010/05/06/ ... orkaround/
"Workaround for LMDE 201012 32-bit users:
If you downloaded LMDE 201012 32-bit and all you're getting is a black screen, you might just be a kernel argument away from a successful boot. The solution is to download 201101, but you can save 1GB of download and a new DVD by using the following arguments:
* For ATI chipsets: radeon.modeset=0
* For nVidia chipsets: xforcevesa or nomodeset
* For GeForce and Generic: nouveau.modeset=0
* For Intel: i915.modeset=0
This should give you a live session in low resolution. Since the embedded kernel is already up-to-date, you don't need to configure anything post-installation and your system should then boot in high resolution.