How can I tell which driver Xorg is using for my video card?

I downloaded and compiled the latest intel video开发者_开发技巧 drivers as mine seems to have issues, I installed with prefix as /usr/local. Then I added the appropriate

Section "Device"
  Identifier "devname"
  Driver "intel"
EndSection

How can I tell if it's using my new compiled driver or something that comes with my distro? What Xorg command displays which library files or some other recognisable info as to how I can determine it's using the new driver (other than waiting for the screen to corrupt again).

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Just look at the Xorg log file it says in there.