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After the kernel upgrade to my system doesn't boot anymore. I have to manually shut down the system, reboot and choose the old kernel to be able to boot my system. The only thing I see is that caps and scroll lock are blinking/flashing. The system hangs on the purple grub background.

Does anyone have an idea how to fix that problem?

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closed as off topic by belacqua, James May 23 '12 at 17:47

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

Welcome to Ask Ubuntu! This question should instead be filed as a bug report, thanks! Instructions here. – Jorge Castro Nov 23 '11 at 2:33

I had the same problem. You can loggin via ctrl-alt-f1.
The startx command tells me nvidia module is not found.

I fixed it by ctrl-alt-f1 -> dpkg-reconfigure nvidia-current

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Use the rescue mode or go to another terminal with ctr+alt+f1 and reinstall your drivers. Usually installing new kernel will break graphics drivers really bad.

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