Ubuntu
nvidia-graphics-drivers package

  1. Bug #877438
  2. Comment #63

Comment 63 for bug 877438

Revision history for this message
Zentai Andras (andras-zentai) wrote : Re: Unity/compiz has sluggish performance on dual-head with nvidia driver

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.