dm_test_crt..._unsupported(9)

💅 NAME 💅

dm_test_crtc_vrr_active_unsupported — okay so this is the "Test Crtc vrr active unsupported" test, bestie. Yes that's the whole name, yes it's a mouthful, no we're not shortening it, it's iconic as is ✨

This page lives in the Kernel API Manual, and the star of the show is dm_test_crtc_vrr_active_unsupported(9). Say it three times fast, I dare you 🫶

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🌸 SYNOPSIS 🌸

void dm_test_crtc_vrr_active_unsupported (struct kunit *test );

That's it. That's the whole vibe. Returns void, takes one arg, absolutely no drama 🔥

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🎀 ARGUMENTS 🎀

• test — the KUnit test context, aka the little world this test runs inside. It's the parameter. The main character, honestly 👑

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🦋 SEE ALSO 🦋

So there's a Kernel file this bad girl lives in, and it's lowkey a journey:

./drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_crtc_test.c

And the whole friend group, because nobody tests CRTCs alone, periodt 💅:

• dm_test_crtc_modeset_required_active_mode_changed(9)
• dm_test_crtc_modeset_required_active_active_changed(9)
• dm_test_crtc_modeset_required_active_connectors_changed(9)
• dm_test_crtc_modeset_required_inactive(9)
• dm_test_crtc_modeset_required_no_changes(9)
• dm_test_crtc_vrr_active_irq_variable(9)
• dm_test_crtc_vrr_active_irq_fixed(9)
• dm_test_crtc_vrr_active_irq_inactive(9)
• dm_test_crtc_vrr_active_irq_disabled(9)
• dm_test_crtc_vrr_active_irq_unsupported(9)
• dm_test_crtc_vrr_active_variable(9)
• dm_test_crtc_vrr_active_fixed(9)
• dm_test_crtc_vrr_active_inactive(9)
• dm_test_crtc_vrr_active_disabled(9)
• dm_test_crtc_is_headless_null_adev(9)
• dm_test_crtc_is_headless_no_connectors(9)
• dm_test_crtc_is_headless_writeback_only(9)
• dm_test_crtc_is_headless_disconnected_display(9)
• dm_test_crtc_is_headless_connected_display(9)
• dm_test_crtc_is_headless_mixed_connectors(9)
• dm_test_crtc_helper_mode_fixup_returns_true(9)
• dm_test_crtc_set_vupdate_irq_no_otg(9)
• dm_test_crtc_set_vupdate_irq_dc_busy(9)
• dm_test_crtc_set_vupdate_irq_enable(9)
• dm_test_idle_create_workqueue(9)
• dm_test_idle_worker_disabled_clears_running(9)
• dm_test_idle_worker_enabled_breaks_when_idle_disallowed(9)
• dm_test_idle_worker_enabled_breaks_when_not_headless(9)
• dm_test_idle_worker_enabled_runs_body(9)
• dm_test_crtc_set_static_screen_optimze_no_sr_entry(9)
• dm_test_crtc_set_static_screen_optimze_sr_entry_psr(9)
• dm_test_crtc_set_static_screen_optimze_psr_su_skips(9)
• dm_test_crtc_enable_vblank_rejects_unconfigured(9)
• dm_test_crtc_enable_vblank_full_path(9)
• dm_test_crtc_enable_vblank_vupdate_busy(9)
• dm_test_crtc_enable_vblank_crtc_irq_error(9)
• dm_test_crtc_enable_vblank_in_reset(9)
• dm_test_crtc_enable_vblank_queues_work(9)
• dm_test_crtc_enable_vblank_ips_restore(9)
• dm_test_crtc_enable_vblank_ips_restore_replay(9)
• dm_test_crtc_update_active_planes_no_stream(9)
• dm_test_count_crtc_active_planes_none(9)
• dm_test_count_crtc_active_planes_mixed(9)
• dm_test_crtc_duplicate_state_copies_fields(9)
• dm_test_crtc_reset_state_allocates_state(9)
• dm_test_crtc_destroy_state_no_stream(9)
• dm_test_crtc_destroy_state_releases_stream(9)
• dm_test_crtc_handle_vblank_no_event(9)
• dm_test_crtc_handle_vblank_skips_when_flip_submitted(9)
• dm_test_crtc_handle_vblank_completes_cursor_only(9)
• dm_test_vblank_control_worker_setup(9)
• dm_test_vblank_control_worker_enable_increments(9)
• dm_test_vblank_control_worker_disable_decrements(9)
• dm_test_vblank_control_worker_disable_clamps_zero(9)
• dm_test_crtc_disable_vblank_no_irq_installed(9)
• dm_test_crtc_disable_vblank_vrr(9)
• dm_test_crtc_disable_vblank_queues_work(9)

Note: yes, optimze is spelled like that in the original names. Not a typo I made, I promise — copy it exactly or nothing will link, ngl 😭

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and that's the whole page!! 💖

Source path round these parts is ./drivers/gpu/drm/amd/display/..., dated October 2026, and the manual is the Kernel API Manual — so like, go forth and test your unsupported VRR, bestie. Slay 🧚✨