Red light on start-up, but only lasts 4-6 seconds

I get no response from this command, I have to cancel it before I can give another command, it never finishes. Tried 3 times now.

Please upload the output of dmesg | paste-log after trying to run this command

https://paste.osmc.tv/jajelixaha

[ 6216.472222] hdmitx: [load_edid_data] 256 bytes loaded from file /lib/firmware/edid
[ 6216.472260] hdmitx: edid: EDID Parser:
[ 6216.472278] hdmitx: hdmitx: vic 768 added to vesa modes
[ 6216.472288] hdmitx: hdmitx: vic 770 added to vesa modes
[ 6216.472298] hdmitx: hdmitx: vic 774 added to vesa modes
[ 6216.472348] [RX]-up_phy_addr = 1
[ 6216.472431] hdmitx: hdmitx: vic 780 added to vesa modes
[ 6216.472446] hdmitx: hdmitx: vic 16 added to vesa modes
[ 6216.472463] hdmitx: edid: get dtd0 vic: 97
[ 6216.472498] hdmitx: edid: get dtd1 vic: 793
[ 6216.472508] hdmitx: hdmitx: vic 793 added to vesa modes
[ 6216.472520] hdmitx: hdmitx: get PMT vic: 97
[ 6216.472534] hdmitx: edid: find IEEEOUT
[ 6216.472570] hdmitx: [load_edid_data] new edid loaded!

That’s all good. Try typing
systemctl restart mediacenter
to get Kodi to re-read the available display modes.

If this command hangs it could stop Kodi from starting.

Tried this command now, and it does indeed seem to be hanging.

Why do you say that? Symptoms? Is ssh still responsive? What does systemctl status mediacenter say?

Can you try another HDMI cable and/or clean the plugs with contact cleaner?

SSH is not responsive. After I pressed enter all I see in the terminal windows is the command and the cursor on the line underneath.

Yes, I can try another HDMI cable. If that does not work, I can try another HDMI port on the receiver.

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I have picture!

I used another HDMI cable, in another HDMI port, and now I have picture!

Thank you for you patience and helping me solve my problem with this, much obliged!!!

Good good. Can you get all the available display modes now?

For the record, can you post the output of edid-decode /lib/firmware/edid please. Just to see if that file got corrupted.

I have the possibility to change the resolution from 640x480p to 4096x2160p, however it warns me to keep it at 1920x1080p and it will change during video playback.

Yes. We don’t recommend running the GUI at 4k resolutions, especially if you have a skin that needs a lot of resources.

From the fact you couldn’t get an EDID at all I suspected a potentially problematic port or cable.

I suspect that you don’t need to specify a custom EDID.

Note that you’re on Kodi v20 and the support for loading a custom EDID automatically was only added recently to OSMC, so you’ll need to run Kodi v21.

But if the new cable/port fixes it then I suggest he sudo rm /lib/firmware/edid. TBH @halvliter I’d wait a bit to upgrade to v21. Still a few wrinkles to iron out with some setups.

Indeed