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[Bug 877438] Re: Unity/compiz has sluggish performance on dual-head with nvidia driver

To: compiz@xxxxxxxxxxxxxxxxxxx
From: Zentai Andras <877438@xxxxxxxxxxxxxxxxxx>
Date: Sat, 10 Mar 2012 06:34:29 -0000
Reply-to: Bug 877438 <877438@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

I got similar problems using single monitor configuration, just after upgraded my ATI card driver to the latest AMD propietary driver (12.2).  Compiz used 50-80% of my CPU. 
Before I used AMD propietary driver (12.1) without experiencing this problem. So I consider this as a regression. 
My card is ATI Mobility Radeon HD 3650. 

I just downgraded my AMD propietary driver back to version (12.1) and
compiz CPU usage reduced to less than 10%, but usually between 0-2%.

I'm not sure that my problem fit in this bug, since in the header it was
mentioned that nvidia drivers & dual head have problem. But the symptoms
are quite similar. If there is a similar bug which is related to the AMD
driver please let me know.

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https://bugs.launchpad.net/bugs/877438

Title:
  Unity/compiz has sluggish performance on dual-head with nvidia driver

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