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I have ATI Graphics on my machine.

I was trying to fix plymouth logo which was bad looking because of my graphics by following an article on Softpedia. Now I cannot login, because I have a blank blue screen.

The drivers had installed flawlessly, once they were detected.

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Which one of these two solutions you used? –  Manish Sinha Feb 17 '11 at 20:34
    
i used the first one. –  Vaolter Feb 17 '11 at 20:47
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2 Answers

In this situation I would boot using a live cd and go through each step of the article to make sure it matches what you have done on your own machine if everything matches then remove the changes you have made to get back to a working installation.

Hope this helps

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no that does not work, the live cd does not have the programs such as grub. –  Vaolter Feb 18 '11 at 16:32
    
askubuntu.com/questions/22866/… copy grub2 files from live cd –  Allan Feb 18 '11 at 18:01
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Try this...

sudo gedit /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Then...

sudo gedit /etc/initramfs-tools/modules

Delete the line...
    uvesafb mode_option=1024x768-24 mtrr=3 scroll=ywrap

Next...

sudo rm /etc/initramfs-tools/conf.d/splash

sudo update-grub

sudo update-initramfs -c -k all
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