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Raspberry Pi 5 8Gb doesn't load graphical UEFI mode (hdmi blank screen) #42

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kt315ua opened this issue Dec 18, 2024 · 1 comment
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@kt315ua
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kt315ua commented Dec 18, 2024

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

Знімок_20241218_204227
Raspberry_UEFI_boot_no_HDMI.log

@kt315ua kt315ua changed the title Raspberry Pi5 8Gb doesn't load graphical UEFI mode (hdmi blank screen) Raspberry Pi 5 8Gb doesn't load graphical UEFI mode (hdmi blank screen) Dec 18, 2024
@kt315ua
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kt315ua commented Dec 18, 2024

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
photo_2024-12-18_21-50-44
photo_2024-12-18_21-50-48

With framebuffer_depth=16, picture became pinky
photo_2024-12-18_21-50-51

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.

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