snd_ctl_activate_id(9)

📦 version 7.3.1, in nixpkgs unstable

💅 snd_ctl_activate_id — the Kernel API Manual, but make it cute 🎀

okay so bestie, welcome to snd_ctl_activate_id(9) from the Kernel API Manual ✨ this one's a little function that flips a sound control on or off, and honestly? it's giving tiny-but-powerful. let's get into it 🫶

🌸 NAME 🌸

snd_ctl_activate_id — activate/inactivate the control of the given id 💖

✨ SYNOPSIS ✨

int snd_ctl_activate_id (struct snd_card *card , struct snd_ctl_elem_id
*id , int active );

🦋 ARGUMENTS 🦋

  • card — the card instance 🌈 (your sound card bb, the whole vibe)
  • id — the control id to activate/inactivate 🎯 (this is the one you're flipping)
  • active — non-zero to activate ⭐ (so like, 0 = nope, anything else = yep)

👑 DESCRIPTION 👑

okay so here's the tea ☕ — it finds the control instance with the given id, and then it either activates or inactivates that control, together with a notification, if changed 🔥. and here's the cute part: the given ID data gets filled with full information 💫 so it comes back all complete and thorough. no cap, it's thorough.

💀 RETURN 💀

  • 0 — unchanged, nothing moved, we stay cozy 🙈
  • 1 — changed, it actually did the thing 💅 slay
  • negative error code — on failure 😭 something went wrong

🔥 SEE ALSO 🔥

Kernel file ./sound/core/control.c:

and that's the whole page bestie 🫶 this lil cutie came from the ./sound/core corner of the kernel and it's dated October 2026, filed under snd_ctl_activate_id(9) 💜 main character energy fr fr ✨🎀

📦 where this page comes from