Video

Verify currently installed X.Org (X server and pixman) software version via the command-line interface:

Xorg -version

Identify graphics (card) hardware:

lspci | grep -e VGA -e 3D

Monitor resolution:

xrandr

Video configuration file location:

/etc/X11/xorg.conf
/etc/xorg.conf

Video playback options:

using ffmpeg, with ffplay as defaultmediaplayer
using mplayer, with mplayer as defaultmediaplayer
using mplayer, with smplayer or gnome-mplayer as defaultmediaplayer
using vlc, with vlc as defaultmediaplayer

ATI driver resolution

Fatdog's xwin command syntax:

xwin [window-manager] [window-panel]

References

https://www.archlinux.org/news/xorg-server-1171-is-now-available/
http://askubuntu.com/questions/584688/how-can-i-get-the-monitor-resolution-using-the-command-line