PI4 - Display 1

Forum for discussion about the Langstone Microwave Transceiver that shares some features with the Portsdown. Wiki: https://wiki.microwavers.org.uk/Langstone_Project
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M0REQ
Posts: 4
Joined: Fri May 02, 2025 3:08 pm

PI4 - Display 1

Post by M0REQ » Thu Oct 16, 2025 8:24 am

Hi all, has anyone got Langstone V3 working on a PI4 with Display 1.

I am using a PI 4B
an official 7" PI Touchscreen (V1)
PIOS 64bit Bookworm Lite
Adalm-Pluto

Once installed I am getting Segmentation Faults for the Screen_Message command when i run ./run.

Any help greatly appreciated.

Eric
M0REQ

M0REQ
Posts: 4
Joined: Fri May 02, 2025 3:08 pm

Re: PI4 - Display 1

Post by M0REQ » Thu Oct 16, 2025 9:19 am

OK, I think I fixed it. I met Colin last night and he mentioned something about VC4 driver so i commented it out in config.txt as so:

# Enable DRM VC4 V3D driver
# dtoverlay=vc4-kms-v3d
# max_framebuffers=2

And it is working now.

Thanks for reading.
Eric
M0REQ

g4eml
Posts: 768
Joined: Thu Apr 26, 2018 9:36 am

Re: PI4 - Display 1

Post by g4eml » Fri Oct 17, 2025 7:50 pm

This was caused by an error in the installation script.
It has now been corrected and the VC4 driver is now commented out during the Langstone install.

Thanks to Eric for pointing this out.

Colin G4EML

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