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I have burned Ubuntu 11.04 on CD then installed on Desktop PC, so this CD copy is fine, but I wanted upgrade my 10.10 (Laptop, laptop is fine,too). I have booted to Live (Try without installing) and direct install... both not working... I see just Black Screen. There are no even any processes at laptop.

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Can you upgrade from the Desktop CD? I think you'll need the Alternate CD to do an upgrade. –  SabreWolfy May 9 '11 at 17:14
    
So you do see the "Try" and "Install" options on the laptop? –  SabreWolfy May 9 '11 at 17:16
    
@SabreWolfy, from 11.04 release you can upgrade from 10.10 to 11.04 with a normal live CD. During installation it detects existing Ubuntu and gives you the choice to upgrade. –  Chethan S. May 9 '11 at 17:24
    
@Chethan S.: Ok, that's new. Good to know that it's possible now. –  SabreWolfy May 9 '11 at 17:27
    
Yes, it gives me choice "Try" and "Install". Both of them do not work. I have already tried by USB boot. Maybe there is some problem with Laptop. So, let me try same CD on another laptop where is I have installed Ubuntu 10.04 (try to upgrade this one) –  rovshango May 9 '11 at 18:28
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up vote 1 down vote accepted

Try to use 11.04 stable version (not beta). Bad news is unity does have video cards problem. some laptop does not load unity. I failed to install unity on a compaq laptop. Try to google this problem with your laptop model.

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Yeah, I think you are right. I tried on another Laptop (Acer) and it worked, but on that Laptop I have installed Ubuntu 10.04.2, so I can not upgrade, I have to delete all :) –  rovshango May 10 '11 at 7:16
    
Have you tried this? when install menu appear(boot from cd) press F6 and select nomodeset. Now try to install. good luck! –  shantanu May 27 '11 at 1:38
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