Hyperpixel4 on aarch64 (RPi3+)

[psnszsn]

I ran the install script, then compiled the hyperpixel4-init.c and hyperpixel4.dts files and placed them in the appropriate directories. The hyperpixel4-init.service seems to start, but the display remains blank.

Any ideas how to do this?

[Gadgetoid]

I haven't attempted to get it working on aarch64 (or really much more than just booting aarch64 for attempts to compile rpi_ws281x), so I don't know the lay of the land.

Are you sure you're using a HyperPixel4 and not a HyperPixel?

You can attempt to run hyperpixel4-init directly, to see if it produces any errors. Generally it will fire out the SPI data whether the display is there or not, so it's not really helpful from a debugging perspective.

You should also check the contents of /boot/config.txt to make sure the installer has made the changes successfully. It might be worth pasting your /boot/config.txt here also.

[psnszsn]

Yes, it is a HyperPixel4. The HyperPixel is not sold anymore as far as i know. hyperpixel4-init runs, but it does not return any message. The exit code is 0. This is the content of /boot/config.txt:

dtoverlay=hyperpixel4
overscan_left=0
overscan_right=0
overscan_top=0
overscan_bottom=0
framebuffer_width=800
framebuffer_height=480
enable_dpi_lcd=1
display_default_lcd=1
dpi_group=2
dpi_mode=87
dpi_output_format=0x7f216
display_rotate=3
hdmi_timings=480 0 10 16 59 800 0 15 113 15 0 0 0 60 0 32000000 6

[Gadgetoid]

Sorry I'm a bit late - but (if you haven't got things up and running by now) could you post the contents of your /boot/config.txt? During my testing I've found that some interfaces being enabled will cause a blank screen. I wonder if this could be affecting you.