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

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