I am trying to install Debian from USB to a Powerbook G4 with a broken screen. If I boot to the Mac, the external monitor works without problems. But in boot select mode (holding down 'alt' at startup) and Open Firmware (cmd + alt + O + F) the external monitor does not come on. Any suggestions on how to fix this?

1 Answer 1


I solved my problem by using a magnet to trigger the lid closed switch (upper middle of the touchpad in my 17' model)

An external keyboard would have worked as well.

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .