# Pi zero with Hyperpixel4 no image

**URL:** <https://forums.pimoroni.com/t/pi-zero-with-hyperpixel4-no-image/24422>\
**Category:** Support\
**Created:** [March 13, 2024, 1:01am UTC](https://forums.pimoroni.com/t/pi-zero-with-hyperpixel4-no-image/24422 "2024-03-13T01:01:00Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![drmike](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@drmike](https://forums.pimoroni.com/u/drmike)\
**Post date:** [March 13, 2024, 1:01am UTC](https://forums.pimoroni.com/t/pi-zero-with-hyperpixel4-no-image/24422/1 "2024-03-13T01:01:00Z")

</div>

I have loaded the “recommended” OS using rpi-imager which is Debian Bullseye legacy 32bit and modified /boot/config.txt to have the line dtoverlay=vc4-kms-dpi-hyperpixel4. I can ssh into the pi zero w with no problem, and it can access the network and outside world fine, but the screen is always black. Is there some program I can run which will force a test to see if the pi can tell if the screen is out there?

The uncommented portion of config.txt is the following. I did comment out the search for DSI display because this is a dpi display, but it didn’t work before I did that either.

# Enable audio (loads snd\_bcm2835)

dtparam=audio=on

# Automatically load overlays for detected cameras

#camera\_auto\_detect=1

# Automatically load overlays for detected DSI displays

#display\_auto\_detect=1

# Enable DRM VC4 V3D driver

dtoverlay=vc4-kms-dpi-hyperpixel4  
#dtoverlay=hyperpixel4  
#dtparam=rotate=90  
#max\_framebuffers=2

# Disable compensation for displays with overscan

#disable\_overscan=1

[cm4]

# Enable host mode on the 2711 built-in XHCI USB controller.

# This line should be removed if the legacy DWC2 controller is required

# (e.g. for USB device mode) or if USB support is not required.

otg\_mode=1

[all]

[pi4]

# Run as fast as firmware / board allows

arm\_boost=1

I’m assuming I missed a step some where. I did double check that all the header pins are well soldered though. I have a nice 'scope - so if there are pins I can monitor to help troubleshoot I’m happy to dig into that too.

---

<div class="post-metadata">

**Author:** ![drmike](https://avatars.discourse-cdn.com/v4/letter/d/a8b319/32.png) [@drmike](https://forums.pimoroni.com/u/drmike)\
**Post date:** [March 13, 2024, 4:36pm UTC](https://forums.pimoroni.com/t/pi-zero-with-hyperpixel4-no-image/24422/2 "2024-03-13T16:36:30Z")

</div>

I ran the legacy command “curl -sSL [https://get.pimoroni.com/hyperpixel4](https://get.pimoroni.com/hyperpixel4) | bash” and that changed config.txt to include

```auto
overscan_left=0
overscan_right=0
overscan_top=0
overscan_bottom=0
enable_dpi_lcd=1
display_default_lcd=1
display_rotate=0
dpi_group=2
dpi_mode=87
dpi_output_format=0x7f216
hdmi_timings=480 0 10 16 59 800 0 15 113 15 0 0 0 60 0 32000000 6

```

I changed `display_rotate=0` to `display_rotate=90` and it flipped the screen 180 degrees. At 180, it was normal. I tried the `DISPLAY=:0.0 hyperpixel4-rotate left` and that did not do anything. I then tried `display_rotate=1` in config.txt AND IT WORKED! So now I can get this project going the way it was meant to. Hopefully this will help anyone else that attempts to connect a Pi Zero to a Hyperpixel display.