I am having a very similar problem to this. When I boot using kernel 3.2.0-48, X does not seem to start. The next thing I see after Grub is a black screen. If I press the power button on my computer while it is displaying the black screen, I hear the HDD clacking away as usual, as though the system is shutting down normally, then it powers off normally. Ctrl-Alt-F1 produces no effect.
If I boot kernel 3.2.0-45, the problem does not occur.
I am not sure if it is related, but input devices attached to my USB 3.0 ports recently stopped working in Grub, too.
I am having a very similar problem to this. When I boot using kernel 3.2.0-48, X does not seem to start. The next thing I see after Grub is a black screen. If I press the power button on my computer while it is displaying the black screen, I hear the HDD clacking away as usual, as though the system is shutting down normally, then it powers off normally. Ctrl-Alt-F1 produces no effect.
If I boot kernel 3.2.0-45, the problem does not occur.
I am not sure if it is related, but input devices attached to my USB 3.0 ports recently stopped working in Grub, too.