How can I find what video driver is in use on my system?

Run lshw -c video, and also seek the line with "configuration". The crammed vehicle driver is prefixed with "driver = ". Instance result :

  *-display
       description: VGA compatible controller
       product: Core Processor Integrated Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: [email protected]:00:02.0
       version: 02
       width: 64 bits
       clock: 33MHz
       capabilities: vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:45 memory:fd000000-fd3fffff memory:d0000000-dfffffff ioport:1800(size=8)

If you desire even more details concerning the crammed vehicle driver, run modinfo. Result of modinfo i915 :

filename:       /lib/modules/2.6.35-24-generic/kernel/drivers/gpu/drm/i915/i915.ko
license:        GPL and additional rights
description:    Intel Graphics
author:         Tungsten Graphics, Inc.
license:        GPL and additional rights
... stripped information for saving space ...
depends:        drm,drm_kms_helper,video,intel-agp,i2c-algo-bit
vermagic:       2.6.35-24-generic SMP mod_unload modversions 

Note that modinfo works with filenames and also pen names, out component names. Most of the components will certainly have the very same name for the component name and also filename, yet there are exemptions. Among them is nvidia.

An additional means of making use of these commands in order to show you the documents name of the vehicle driver would certainly be :

modinfo -F filename `lshw -c video | awk '/configuration: driver/{print $2}' | cut -d= -f2`

When filled, the command lsmod will certainly show the nvidia component as filled. modinfo nvidia will certainly mistake out. Why? Due to the fact that there is no component called "nvidia", it is simply an alias. To settle the alias you can make use of modprobe --resolve-alias nvidia. Or to get the entire modinfo in one command :

modinfo $(modprobe --resolve-alias nvidia)