Character devices: This section contains a potpourri of miscellaneous kernel drivers. Be sure to enable "Virtual terminal" and "Support for console on virtual terminal;" these are needed for the standard text-based console that greets you after the kernel boots. You'll most likely need to enable "Unix98 PTY support" as well. If you want to use a parallel printer, remember to enable "Parallel printer support" too. Everything else is typically optional. "Enhanced real-time clock support" is recommended; "/dev/agpgart (AGP support)" and "Direct Rendering Manager" are typically required to take advantage of free Linux 3D acceleration under X (particularly if you have a Voodoo3+, ATI Rage 128, ATI Radeon, or Matrox card). Getting X to work in accelerated mode requires additional configuration steps besides simply enabling these options.