Black screen with boot on USB with Raspberry Pi 4B

Support & help
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1

:pushpin:Question Description

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  • No similar issues found.

Please describe the problem you’ve encountered in detail:

  • Description:
    My test has been made on my Raspberry Pi 4B with 2Gb ram.
    I tried to install FydeOS SBC on a USB 3.0 Pendrive, but it doesn’t work: the screen seems to react with the backlight, but nothing happens and still remain black.

I tried with Rufus, BalenaEtcher, Raspberry Pi Imager: nothing has worked :-/

Maybe is there something I missed to do?!
Thank you for any kind advice!

Alberto

:computer:System & Device Information

  • Hardware & System Configuration: Raspberry Pi 4B
    • Processor: Broadcom BCM2711, Quad core Cortex-A72 (ARM v8) 64-bit SoC @ 1.8GHz
    • Graphics Card(Please specify if there’s a discrete graphics card):
    • RAM: 2Gb
    • FydeOS Version: 21
2

Have you checked the integrity of the image? And have you tried booting from other devices (e.g., an SD card)?

1 Like
3

Yes:

  • the image is correct
  • changing from usb to sd is the same
4

I have an update: I connected one of the RPI HDMI output to a monitor, and after about 3 minutes:

  • on the external HDMI Monitor it appears an unfocused image on the screen, similar to the pale yellow wallpaper;
  • on the monitor connected to DSI cable there’s no image and still remain black backlighted.

At this point RPI:

  • doesn’t get any input from touchscreen, mouse or keyboard
  • the pointer doesn’t appear.

To check if the hardware/firmware was ok, I also tried to boot:

  • with a RPI OS USB Stick: it worked fine
  • with Chromium OS: it freezes on the “circular coloured rainbow” on the display and the internal green light flashes 7 times
  • with FydeOS v20: it does the same as v21, but the unfocused image
    is pale cyan

Any suggestion?

5

Please check the Raspberry Pi Notes in the release notes to see if it helps.

1 Like
6

Thank you so much!
This explains why the HTMI monitor doesn’t work correctly:

  • I’ll disconnect the HDMI monitor
  • I’ll go on with the DSI display.

On the other hand, the DSI touch monitor still remain:

  • active but black (except for a pale reaction 1 second after the power on, and a white flash after 2 seconds)
  • insensitive to the touch
  • without any logo, pointer or textual prompt.

At the boot time, the two led on the board are:

  • red: still
  • green: flashes and blinks as it is doing something
    but nothing happens.

Could it be that a 2Gb RAM is too small for the OS initial configuration?
Is there any control I can do on log files?

Or must I wait for a longer time, till the configuration completion?
:slight_smile:

Thanks!

7

Unfortunately, the 2GB model doesn’t meet our minimal requirements.