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I have upgraded the new released Natty today but after restarting i got black screen

  1. i have reinstalled the grub using live cd

  2. i have copid xorg file from /usr/share/X11/ from another computer

None of this solved the problem. Is there any solution for this?

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What graphics card/chipset are you running? –  wojox Apr 29 '11 at 14:44

2 Answers 2

Switch off the computer by pressing the power button for a couple of seconds and then turn it on. If the grub menu to select ubuntu version does not appear, try turning off the computer while ubuntu boots. After the next startup the menu shows up.

In the grub menu, select "Previous Linux versions" and select the item with kernel version 2.6.35-28. This one booted properly on my laptop.

After logging in, change the grub menu so that the kernel 2.6.35 becomes the default instead of 2.6.38. Or simply remove the kernel image 2.6.38 using synaptic.

This is of course just a workaround and I also would be happy to read here an other solution that fixes the newest kernel somehow.

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I would log into Ubuntu using a failsafe X session and then reinstall your graphics card driver. My nvidia driver did not like the upgrade process one bit.

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