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I thought I'd try Lubuntu out but I'm having problems right off the bat: I get a blank black screen when trying to install.

I created a bug report on Launchpad and I've been searching around more and I've tried a few more boot options like nouveau.modeset=0 and I still just get a black screen.

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During the bootup, press tab, then add the following line in your startup script (before the 2 -- at the end) to see if this helps:

nouveau.blacklist=1
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VERY late post, but I was looking for a solution for this problem while trying to install 15.10 on a G4 15" and I kept finding this post in the process-- I eventually discovered occasionally hitting the F2 (big sunshine) key without hitting the function key would eventually wake the screen and keyboard backlights up after the system had finished booting.

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