vga_switche...ster_handler(9)

📦 version 7.3.1, in nixpkgs unstable

💅 vga_switcheroo_register_handler(9) — the "make it official" page 🎀

okay so this is from the Kernel API Manual, and the page is literally called vga_switche...ster_handler(9) (yes the header truncates it, no that's not a typo, that's just how the man page renders it bestie 😭). It's about vga_switcheroo_register_handler, and it's short, it's sweet, it's lowkey iconic. Let's go ✨

🌸 NAME 🌸

vga_switcheroo_register_handler — register handler. that's it. that's the whole vibe. 💅

🦋 SYNOPSIS 🦋

int vga_switcheroo_register_handler (const struct vga_switcheroo_handler
*handler , enum vga_switcheroo_handler_flags_t handler_flags );

copy it exactly, don't get creative with it, the compiler will NOT be nice about it fr fr 🙈

💖 ARGUMENTS 💖

  • handler — handler callbacks. this is where you hand over the whole callback situation, the actual doing-of-things. your handler, your callbacks, your moment 👑
  • handler_flags — handler flags. the flags that go with the handler. flags for the handler. very handler-flags of them ✨

⭐ DESCRIPTION ⭐

Register handler. that's the entire assignment, and it ate 💀

and here's the cute part: it enables vga_switcheroo if two vga clients have already registered. so like, if the two VGA clients already showed up to the party, this is the moment the lights come on and the whole switcheroo thing actually starts happening — but only if both of them are already there. two clients registered? boom, enabled. only one? not yet bestie, we wait 🫶

🔥 RETURN 🔥

  • 0 on success — slay, it worked 💖
  • -EINVAL if a handler was already registered — like, there's already a handler in the group chat, we don't need a second one, so it's a no from the kernel 😭

✨ SEE ALSO ✨

okay this section is a lot and honestly it's giving "linked bibliography" energy, but every single one matters so here we go, no skipping, periodt 🌈

side note from your girl: if you're registering a handler you probably also want the *un*register one (vga_switcheroo_unregister_handler(9)), because everything you register in this life you eventually have to unregister. balance. 🧚

and that's the page!! officially signed off from ./drivers/gpu/vga, dated October 2026, page name vga_switche...ster_handler(9) in the Kernel API Manual 🎀 go register that handler bestie, you've got this 💜🦋💫

📦 where this page comes from