Raspberry Pi 5 8Gb doesn't load graphical UEFI mode (hdmi blank screen)

[KayTeeFive]

HW:

1. Raspberry Pi5 8Gb
2. Kingston NV3 1TB (clean)
3. Kingston Canvas Go! Plus microSDXC 64GB
4. PSU original 27W

Steps:

• prepared SD card with card reader
  • fat16 file system with 32mb size
  • extracted release uefi v0.3 into sd
• turned on with HDMI and UART/USB converter

Actual result:

• UEFI loaded and available only via UART
• HDMI interfaces are blank (but monitor recognize connection)

Also, tested with latest bcm2712-rpi-5-b.dtb#dc9ec44](https://github.com/raspberrypi/firmware/tree/master/boot) - no result

Raspberry_UEFI_boot_no_HDMI.log

[KayTeeFive]

Problem found with framebuffer_depth parameter.
Release 0.3 contain next parameter value:

# Force 32 bpp framebuffer allocation.
framebuffer_depth=32

For my Raspberry Pi 5 board changing that parameter to 24 helps: framebuffer_depth=24

With framebuffer_depth=16, picture became pinky

Additionally, there was found comment about issue with this parameter for Pi5: rsta2/circle#511 (comment)

PS: I don't know how it will affect Linux/FreeBsd kernel boot processes. But it will fix UEFI boot interface.

[StefanFanaru]

Problem found with framebuffer_depth parameter. Release 0.3 contain next parameter value:

# Force 32 bpp framebuffer allocation.
framebuffer_depth=32

For my Raspberry Pi 5 board changing that parameter to 24 helps: framebuffer_depth=24

With framebuffer_depth=16, picture became pinky

Additionally, there was found comment about issue with this parameter for Pi5: rsta2/circle#511 (comment)

PS: I don't know how it will affect Linux/FreeBsd kernel boot processes. But it will fix UEFI boot interface.

The same for me... setting framebuffer_depth=24 does help (thx) but it looks very sketchy