Known Issues — macOS Sequoia

Current limitations on the Dell G3 3579, verified by testing.

Brightness keys do not work

F11/F12 and Fn+F11/Fn+F12 produce no brightness change and no HUD. The brightness slider works normally.

This is a trade-off of the boot-backlight fix: -igfxblr lights the panel at boot but disables the ACPI brightness-key path. Switching to -igfxblt keeps the ACPI path intact but leaves the panel black at boot. Measured and documented in display backlight.

Workaround: adjust brightness with the slider or Control Center.

If a future WhateverGreen or BrightnessKeys release resolves this, verify with a brightness measurement (AppleBacklightDisplay → bklt) before committing.

HDMI output does not work

Connecting an external display over HDMI produces no image: macOS detects no external display (system_profiler SPDisplaysDataType shows only the internal eDP panel).

The HDMI port on the G3 3579 is wired to the NVIDIA dGPU, which is disabled (SSDT-Disable_GPU_PEG0) and unsupported (Pascal has no macOS driver). This is the same Optimus design that keeps the internal panel on the iGPU, so no framebuffer patch can enable it.

Workaround: use the HDMI port under Windows, where the GTX 1050 has full driver support.

NVIDIA GTX 1050 — unsupported

Pascal has no macOS driver and the internal panel is wired to the iGPU, so the dGPU cannot be used for the internal display at all. Disabled via SSDT-Disable_GPU_PEG0.

Touchpad feel

The input pipeline is identical to Sonoma (same driver binding, same 125 Hz report rate), but the pointer feels less fluid on Sequoia. That is Sequoia's compositor on UHD 630, not the trackpad. Try Reduce Transparency / Reduce Motion in Accessibility settings.

Verification scope

Webcam video, the microphone, the SD reader and lid sleep/wake are verified working (see hardware support); HDMI output is verified not working (dGPU-wired). Sleep was tested by closing the lid only — overnight sleep, hibernation and other sleep triggers were not.

Boot safety

If the machine fails to boot after an EFI change, recover by booting a USB OpenCore stick or restoring the previous EFI. Back up before changing the EFI partition.