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I had installed Ubuntu 12.10 yesterday but it was not working properly, so installed Ubuntu 12.04 from Live USB and after installation, it was working without harm, but problems arose when I installed updates, the screen is going weird if I launch dash home.

I've posted link of screen shot of my screen, hoping that this problem can be solved. Take a look at top of the screen, there you can see the problem.

lspci -nn | grep VGA output

00:0d.0 VGA compatible controller [0300]: NVIDIA Corporation C61 [GeForce 7025 / nForce 630a] [10de:03d6] (rev a2)
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Can you add the hardware specs, and please, don't forget the graphics card model. – mikewhatever Nov 13 '12 at 6:16
Hardware, Memory: 1.9 GiB Processor: AMD Athlon(tm) II X2 240 Processor x 2, graphic driver Unknown :(, it is working fine in 2D. – samsher Nov 13 '12 at 6:53
That's helpful, thatnk, but it lacks the graphics info. Can you add the output of lspci -nn | grep VGA to the question - please don't post it in the comments. Generally, as Unity requires decent 3d support, it won't work well with quite a few GPUs. That's why Unity2d was made. – mikewhatever Nov 13 '12 at 7:19
added output in the question. – samsher Nov 13 '12 at 7:35
Thanks for the output, please see the answer below. – mikewhatever Nov 13 '12 at 8:08

Thanks, you have an oldish Nvidia card from around 2006. Originally, the 6xxx and 7xxx series didn't work at all with Unity, now some of them do, but as you can see, not very well. Unity is targeted at more recent GPUs - 3-4 years back, to give an optimistic estimation.

I'd advise using Unity2d, or any of the Ubuntu derivatives - Kubuntu, Xubuntu, Lubuntu.

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ok, thanks for information, i am noob about graphic card and all, so can i upgrade my graphic card? what you say? – samsher Nov 13 '12 at 8:46
Sure, theoretically, anything can be upgraded, the big question - is it worth it. What you have is probably an on-board GPU (in other words, soldered to the board), so, you'll need to open up the computer case and check if there is a slot for an external graphics card. – mikewhatever Nov 13 '12 at 10:19
oh ok i will try it one day, but not now, thanks again for information. – samsher Nov 13 '12 at 11:39

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