Not only happening on ARM:

Same problem with ubuntu-12.10-desktop-i386 on an Acer Aspire One 722
with AMD C-60 APU.

After starting the PC you see the 
- BIOS-Logo,
- blinking cursor,
- Screen goes on,
- Screen goes off.

The only workaround is to switch with CRTL+ALT+F2, then CTRL+ALT+F7.

After that everythings normal and i enter my password for the hdd
encryption.

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https://bugs.launchpad.net/bugs/1065902

Title:
  black/blue screen before installer, tty switch fixes it

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