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After I choose Lubuntu on my Grub nothing happens. The screen turns black, the keyboard lights up like it may be doing something, but over time nothing happens.

This started happening after I closed my laptop and opened it up again. Now Lubuntu will not boot at all.

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This is likely because of something known as framebuffer. In order to disable it try adding the kernel parameters i915.modeset=1 or i915.modeset=0. In order to do this you'll need to restart computer, then press Shift to enter the grub menu, and when Ubuntu is highlighted press e. After seeing the line which has something like linux_gfxmode or something like that add one of those parameter to the line. Once you've done that press Ctrl+X.

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