Overview of Display Preferences

Documentation / CyMonitor

• Overview of Display Preferences
  • What It Does
  • What It Is Not
• Using Display Preferences
  • DPI And Readability
  • Dry Run Before You Commit
  • Identify Heads
  • First-Run Dense Framebuffers
• Command Line
  • Probe And Identify
  • Apply And Dry Run
  • First-Run Scale
• Copyright

Overview of Display Preferences

Display Preferences (cymonitor-prefs) sets the DPI and layout numbers the desk uses to size type and place heads.

Open this book from Help Books as "CyMonitor", or:

cyhelp --book CyMonitor --topic overview

The Applications page lists it as: DPI.

What It Does

An X display has several numbers that all answer to "DPI", and they disagree: pixels over the millimetres the driver claims versus the Xft resource that actually scales a point size. This panel sets the resource Xft uses. It can also replay saved resolution, rotation, and multi-head layout at session start.

• Probe what is plugged in
• Pick a candidate DPI (48..384) and apply or dry-run it
• Identify heads with a short CyOSD label on each connector
• On first run of a dense framebuffer, optionally seed a 150% font scale

The display server is still X11. This panel does not install a new one to get a sharper font.

What It Is Not

• Not a replacement for your driver's EDID or xrandr itself
• Not a full colour-management suite
• Not something that fights NetworkManager-style ownership -- it writes the desktop's own readability prefs and issues xrdb/xrandr commands

In This Book

• Using Display Preferences -- day-to-day panel and session apply
• Command Line -- probe, apply, dry-run, identify
• Copyright