Random colour scren after boot

Hi guys.

Got a random problem on my old faithful s905 box.

Using latest CoreELEC version

Sometimes after the CoreELEC boot screen I get a blank screen. Sometimes it’s blue, sometimes pink and this morning it was green.
Pulling the power sometimes sorts it but it may take 3 or 4 boots to get into Kodi. I’ll upload a video later.
I’m thinking it’s a hdmi problem but welcome any input.
I’ve tried a clean install of CoreELEC, that works for a couple of days then starts to do it again. I’ve tried a different hdmi cable and it doesn’t seem to matter which hdmi input I use on the tv.

Thanks for any tips.


Try the latest version, 8.95.6 it only came out yesterday.

bear in mind some remotes won’t work

read the release notes

Will do.



Just thinking about this at work.

I don’t think it’s related to booting. This particular box is always on. And it does it when I turn the tv on in the morning sometimes. So I think it’s more when the tv is off for a while ( over night ) maybe a hdmi handshake issue?


Updated to latest release. Just done it again.

Been doing some reading, might I need to force CoreELEC to rgb?


You can try to connect to different TV to check if it’s a problem with box or TV.
If TV than you can try RGB. If Box than possible bad cable or cable connection.

Thanks for the reply.

How do I force the box to output rgb?


Add echo 'rgb,8bit' > /sys/class/amhdmitx/amhdmitx0/attr in autostart.sh

Also try to start TV before box.

No forcing colour space with the latest release will cause issues, this to me seems like an issue with your HDMI cable.

I’ve tried multiple cables on this one.

I’m thinking it might be time to retire this box, it’s had a good run. Lol.