drm_edid_header_is_valid(9)

📦 version 7.3.1, in nixpkgs unstable

✨ drm_edid_header_is_valid ✨

okay so this is a page straight out of the Kernel API Manual and bestie, it's a little one but she's important 💅 it's all about drm_edid_header_is_valid — the glow-up check for your monitor's vibes.

🌸 NAME 🌸

drm_edid_header_is_valid — sanity check the header of the base EDID block 🔍

🎀 SYNOPSIS 🎀

int drm_edid_header_is_valid (const void *_edid );

🦋 ARGUMENTS 🦋

  • _edid — pointer to the raw base EDID block. that's it. that's the whole input. she just wants a pointer 🫶

💖 DESCRIPTION 💖

So basically: this function does a sanity check on the header of the base EDID block. literally just eyeballing the header like "hmm, are you gonna behave?" 💀 that's the whole job. she's not reading the entire block, she's just checking the opening line, iykyk.

⭐ RETURN ⭐

Returns 8 if the header is perfect 👑 — and it slides all the way down to 0 if it's totally wrong 😭. so like, a whole spectrum of header quality. 8 is the slay, 0 is the "not me" 💀

🌈 SEE ALSO 🌈

Kernel file ./drivers/gpu/drm/drm_edid.c — plus the whole friend group, no cap:

that's the whole page bestie, short and iconic 🧚💜

this came from the Kernel API Manual, source lives in ./drivers/gpu/drm, dated October 2026 — and the page itself is drm_edid_header_is_valid(9). no cap, that's the tea ☕✨
📦 where this page comes from