dm_test_cacp_caps_lcd_panel(9)

📦 version 7.3.1, in nixpkgs unstable

💅 dm_test_cacp_caps_lcd_panel — Kernel API Manual, bestie edition ✨

okay so real talk, we're in the dm_test_cacp_caps_lcd_panel(9) zone of the Kernel API Manual and it's giving "tiny test, big opinions" energy 💖 lowkey one of the most relatable little tests in the whole display stack, ngl.

🌸 NAME 🌸

dm_test_cacp_caps_lcd_panel — literally just here to test that CACP is disabled on an LCD panel 💅 periodt.

✨ SYNOPSIS ✨

void dm_test_cacp_caps_lcd_panel (struct kunit *test );

🎀 ARGUMENTS 🎀

  • test — The KUnit test context 🧚 that's it, that's the whole argument, she's low maintenance and we love her for it.

🦋 DESCRIPTION 🦋

okay so picture this: plain LCD panels 🖥️ do not benefit from CACP, right? So it has to be disabled — and here's the part that actually matters, bestie — it must be disabled even on a supported IP version and eDP signal 👀🔥 like yes queen, even when everything else lines up all cute and valid, CACP still stays OFF for the plain-LCD girlies. no exceptions, no cap 💀

👑 SEE ALSO 👑

okay so this list is iconic and also long, buckle up 🫶 first up, the kernel file where all the chaos lives:

  • Kernel file: ./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_connector_test.c

and then, the whole squad, in order, exactly as they appear (no one gets left behind 💜):

💀 friendly lil heads up bestie: this page is from the Kernel API Manual, and the source/date line lives at the bottom in real life — I'm folding it in down here instead, okay? don't come for me 🙈

and that's the whole page, slay 🎀 the source is ./drivers/gpu/drm/amd/display/... (yes, it's abbreviated like that, that's genuinely how she's printed) and the date stamp is October 2026, for dm_test_cacp_caps_lcd_panel(9) — mwah, go read the other 200-something tests now, iykyk 💜✨🦋

📦 where this page comes from