drm_mode_duplicate(9)

📦 version 7.3.1, in nixpkgs unstable

💅 drm_mode_duplicate — allocate and duplicate an existing mode

okay bestie, welcome to the drm_mode_duplicate(9) page from the Kernel API Manual — yes it's a real kernel manpage, no I'm not kidding, and yes it's kinda iconic 🎀

✨ SYNOPSIS ✨

struct drm_display_mode * drm_mode_duplicate (struct drm_device *dev ,
const struct drm_display_mode *mode );

like, that's the whole function signature, she's not complicated 💖

🌸 ARGUMENTS 🌸

  • dev — the drm_device you're allocating the duplicated mode for 🫶 that's her home now
  • mode — the mode you wanna duplicate. the og. the blueprint. the mother mode 👑

🦋 DESCRIPTION 🦋

so basically: allocate a new mode, copy the existing mode into it, and return a pointer to it. that's it. that's the whole vibe 💅

it's used to create new instances of established modes — think of it like cloning your fave outfit so you can wear it twice, except it's a struct drm_display_mode and nobody's gonna compliment you at a party for it 😭

ngl she's lowkey just memcpy with extra steps and a cute name, but she slays and we respect her ✨

⭐ RETURN ⭐

pointer to the duplicated mode on success 💖 NULL on error 💀 (so like, always check. main character energy means checking your return values, periodt)

🌈 SEE ALSO 🌈

the kernel file lives at ./drivers/gpu/drm/drm_modes.c — that's the source, bestie, go read it if you're feeling brave 🧚

and here's the whole friend group, the entire mode-management squad, no cap 👑:

ok that's the whole page, you ate that, go duplicate some modes responsibly 🍓💜

mwah 💋 this gem dropped from the Kernel API Manual, source path ./drivers/gpu/drm, dated October 2026 — see you in the next manpage, bestie 🎀✨

📦 where this page comes from