Video card basics
From MEPIS Documentation Wiki
Here are a collection of various commands to determine the state of your video cards and drivers. See the "monitor" and 'video card" category links at the bottom of the page for further actions.
All commands are entered in the Konsole.
lspci | grep VGA
This will give you the type of graphics card / video card you have installed
00:0d.0 VGA compatible controller: nVidia Corporation GeForce 6100 nForce 405 (rev a2)
01:00.0 VGA compatible controller: nVidia Corporation NV34 [GeForce FX 5200] (rev a1)
grep '/usr/lib/xorg/modules/drivers/' /var/log/Xorg.0.log
This command will show which video drivers remain loaded. In this sample, the 'nv' driver is being used:
(II) Loading /usr/lib/xorg/modules/drivers/nv_drv.so (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so (II) Unloading /usr/lib/xorg/modules/drivers/vesa_drv.so (II) Unloading /usr/lib/xorg/modules/drivers/fbdev_drv.so
In this sample, 'nvidia' driver is being used:
(II) Loading /usr/lib/xorg/modules/drivers/nvidia_drv.so
cat /etc/X11/xorg.conf | grep nvidia
This will indicate if the nvidia driver is loaded during boot/start-up
glxinfo | egrep "glx (vendor|version)"
This will give what video driver is being used
server glx vendor string: SGI server glx version string: 1.2 client glx vendor string: SGI client glx version string: 1.4
server glx vendor string: NVIDIA Corporation server glx version string: 1.4 client glx vendor string: NVIDIA Corporation client glx version string: 1.4
glxinfo | grep direct
Will indicate if direct rendering is working
direct rendering: Yes
direct rendering: No (If you want to find out why, try setting LIBGL_DEBUG=verbose)
This will demonstrate/confirm that your 3-D rendering is working.
After a several seconds, you can close the gears window to stop it.
11846 frames in 5.0 seconds = 2369.155 FPS 15168 frames in 5.0 seconds = 3033.408 FPS 15197 frames in 5.0 seconds = 3039.334 FPS 15198 frames in 5.0 seconds = 3039.481 FPS 15164 frames in 5.0 seconds = 3032.757 FPS 15179 frames in 5.0 seconds = 3035.745 FPS
What version of nVidia driver is being used?
Please see the Install nvidia driver page