X.Org Foundation

CCC 2013 - X Security - It's worse than it looks

ArchWiki - Display Power Management Signaling handles how to disable dpms.
Random Bugs - How to disable the display standby on a xorg xserver

YouTube - "A Political History of X" - Keith Packard (LCA 2020)

The XFree68 Modeline Generator

X.Org wiki - Feature Matrix for Free Radeon Drivers
X.Org wiki - Supported Program List for Free Radeon Drivers

3D Graphics hardware performance using Free Software drivers (X.Org DRI)
DRI on FreeBSD (old)

Window Managers for X

Ion
ratpoison
cwm
fluxbox
FVWM
FVWM-Crystal

CDEmu theme voor FVWM.

xrandr -s 800x600

To see available resolutions:

xrandr --verbose

Source: How To Wiki - How to change screen resolution while in X-Windows