Red screen / video bug

Hi

somethimes I've a wired bug since I changed from OE to latest LE Krypton Alpha: YouTube

I'n most cases the bug is gone if I do a reset (but not all time). I had this bug also with the last alpha version.

HTPC:
Intel Core i5 3450S (Intel HD Graphics 2500)
AsRock Z77E-ITX

I can test it with another cable while the next days, but it has works for more than 2 years with this cable and OE, Windows 8 and SteamOS.

Ok, now it looks very strange.... This bug has something to do with the audio interface.
I only have this bug if I start LibreELEC while my audio receiver is off and turn the receiver on and LibreELEC is already ready. The screen change to red/blury exactly at the time that the receiver turns on.
I've a old "audio-only" receiver and it's connected via TOSLINK. That can't be an HDMI issue.

Tell me if you need any more informations.

Quote from milhouse

It looks like dirty region visualization is being enabled.

I think that was a good hint. Looks like is some IR code from my Harmony. I use a Flirc with a special mapping to put on my PC (actually I don't know what I've used for Power-On). Has LibreELEC mapped any key as default to enable Dirty Regions?