DDC(4)

📦 version 11.0, in nixpkgs unstable

💖 DDC(4) — VESA Display Data Channel V2 devices, bestie 💖

okay so this is the DDC(4) page from the Kernel Interfaces Manual, and the manual name is ddc, section 4. It's giving “monitor whisperer” energy, and it's all about VESA Display Data Channel V2 devices. periodt. ✨

🌸 NAME 🌸

ddc — VESA Display Data Channel V2 devices. That's the whole name vibe: the ddc driver, and it's about VESA Display Data Channel V2 devices. No cap. 🫶

✨ SYNOPSIS ✨

the synopsis is literally this, bestie:

ddc at iic? addr 0x50

so yeah: ddc at iic?, address 0x50. iconic little configuration line, fr fr. 💅

🦋 DESCRIPTION 🦋

The ddc driver provides support for accessing the VESA Display Data Channel Version 2, which many video displays support. That's the main character job: DDC V2 access for displays that speak it. 🌈

🎀 SEE ALSO 🎀

go read these next, iykyk:

⭐ HISTORY ⭐

The ddc device appeared in NetBSD 4.0. so it's been around for a minute. 🌸

👑 AUTHORS 👑

This one is by Garrett D'Amore <gdamore@NetBSD.org>. shoutout and flowers 🫶💐

💀 BUGS 💀

okay bestie, real talk: this driver does not provide any mechanism for access from user applications. Its only use at this point is to give framebuffer device drivers a way to query monitor description data (EDID) using a specialized in-kernel API. And there is no support for sending control commands to display devices — none is provided. That's the whole tea. 😭

cute sign-off: this DDC(4) page is from Debian, dated May 11, 2006. mwah 💋✨

📦 where this page comes from