title: Linux hardware: connected displays
agents: linux
catalog: os/hardware
license: GPLv2
distribution: check_mk
description:
 The displays connected to a Linux host's graphics cards (DRM connectors: internal
 notebook panel eDP/LVDS/DSI, HDMI, DisplayPort, ...): for each one the vendor and
 model from its EDID, the size, the current mode and whether it is switched off;
 the number of connected displays as a metric, the notebook lid state. Always OK,
 unless a minimum number is set with the rule "Linux hardware: displays".

 The same data goes into the HW/SW inventory (hardware > displays: vendor, model,
 serial, year, size, native resolution per connector), so a swapped monitor shows
 in the inventory history.

discovery:
 One service on hosts with at least one connected display (not on headless servers).
