I have Ubuntu 12.10 (12.04 and upgraded to 12.10). After upgrading I deleted old graphic drivers and instal FGLRX (or smth similar) to get graphic interface.
But after upgrade, battery consumption is high (it last about 90min, and before easily up to 4 hours) and laptop is warming up ( it feels hot under it, and area where asdfg buttons are).
Also, in system settings under graphics it's : Intel® Sandybridge Mobile x86/MMX/SSE2
Laptop is Lenovo ThinkPad E520.
Is there any way to correct this? Laptop have dual graphics (Intel and ATI), and it would be nice to switch it somehow or