Execute tis command in a terminal:
$ lspci -v
For instance I use the i915 kernel driver:
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor
Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer Device 2027
Flags: bus master, fast devsel, latency 0, IRQ 25
Memory at f2800000 (64-bit, non-prefetchable) [size=4M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at f000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities:
Kernel driver in use: i915
