Dear all,
I'm having a strange problem with an odroid C2 running libreElec.
HDMI CEC works out of the box on both the TVs in my house, but specifically on a Toshiba 46" the video connection keeps disconnecting (glitches, they last typically a second) every now and then when an input comes from the TV remote controller.
I tried to connect the C2 to another port which is not ARC / CEC compatible using an air mouse and substituting the HDMI cable... but got the same result; every key I press on the air remote controller, the screen disconnects and re-connects ..
Oddly enough, I tried the entire set of tests on a little 24" Sony Bravia... I have no issues at all.
So I guess that the problem relies on Pulse drivers with the specific HDMI implementation by Toshiba.
Another element to be evaluated: before the C2, I had an odroid C1 CEC enabled running OpenElec and these strange "glitches" occourred a couple of times in .... two years.
I make a recording on the issue, in order to clarify what the problem is. (in the video, I was just on the youtube plugin scrolling down results on "most wanted" video section... got two glitch in few seconds):
If anyone could guide me (yeah, I'm quite a n00b on LE) on how to troubleshoot the problem (maybe any log could be helpful, but I don't know where these are eventually located or if it's necessary to enable a trace, I don't know)... well, that would be greatly appreciated.
Thanks everybody,
M. 
EDIT: I found out the cause of this odd behaviour: the psu .
Changed it with another one I had and no issue so far... beware of cheap psu 