Display corruption?

All things relating to OLED Screen(s)
Post Reply
Posts: 29
Joined: Fri Apr 13, 2018 8:26 pm

Display corruption?

Post by G8SEZ » Fri Jul 20, 2018 12:04 pm

I have several Pi-Star devices running on RPi Zero Ws with an MMDVM_HS HAT board, the OLED displays are standard 128x64.

What I notice is that the larger text, scrolling "MMDVM" and static "DMR", often have various small corruptions with pixels either off when they should be on or with odd little lines of a few lit pixels extending vertically from the 'correct' lettering. This is OK after a reboot but gradually corrupts as the uptime increases.

Any idea if this is a hardware issue or is it subtle memory corruption within the MMDVMhost software?

Anyone else see this?

Brian G8SEZ

Posts: 10
Joined: Mon May 07, 2018 5:07 am

Re: Display corruption?

Post by KC6N » Sat Oct 27, 2018 2:01 pm

I see various types of "corruption" with the 0.96 display (the one from HRO) but it seems to clear up after a while. I see DMR show up in mid screen with info above, below and in the middle of it. Do I have a setting wrong somewhere?

User avatar
Posts: 78
Joined: Sun Apr 15, 2018 6:35 pm

Re: Display corruption?

Post by VK7HSE » Tue Oct 30, 2018 11:17 am

Ensure that you have the display logging set to zero (0) as that's what is the cause for the visual corruption

This is in the expert panel under mmdvmhost Image

Sent from my Pixel 2 XL using Tapatalk

Post Reply