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I was using ubuntu 10.10 from last year. every thing was Ok with that. recently I've installed Ubuntu 12.04 in place of 10.10, after installing that on my Dell laptop, I started to feel uncomfortable.

It to slow event if you move mouse then its feel like i'll take 1min to move one place 2 another..

I know why this is happening, all because of 12.04 runs my CPU up to 99%-100% all over time.

And there are 2-3 processes who use all the cpu.. like
1. System_Monitor
2. compiz
I don't know why its use all the CPU even Other app can't able to run .. in Ubuntu 10.10 every think was Ok..

Any solution for this problem..!! |


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And what might those 2-3 processes be? – daithib8 May 21 '12 at 13:15
Please detail in your question the specifications of your laptop in terms of Memory (RAM), HDD space, swap, CPU type, graphics card,graphics driver. Thanks. – fossfreedom May 21 '12 at 13:51
Also, the model of laptop (DELL has plenty of different models) would be interesting. – offline Jun 10 '12 at 21:23

Not talking about 100% cpu here but this bug is responsible for significant cpu usage on 12.04:

Fix is URGENTLY needed. But until that is available, no solution seems to help.

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It seems a problem with the graphics card. Check if there are restricted drivers for your GPU, more on this here

If you have an old computer try Unity 2d, you can follow these instructions How do I install and switch to the Unity 2D desktop?

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