[Matt Devo]

...there's a fairly high likelihood of the temp quickly coming back up to 67, which would end up causing a constant oscillation between low and medium speeds.

Ok, thanks for the answer.
I suspected that this reason forced you to set those thresholds,
Definitely it's not my case because MEDIUM fan speed keeps CPU temperature near 60-62 in active state.
So, taking into consideration your conclusions and huge experience, I have to disassemble the box and have a look what's there with cooling system and thermal grease.

One question more, if you don't mind.

I've lost my original MAC for some reason and now the box runs with "standard" MAC. I'd like to get it back.
Is it enough to find "standard" MAC in the binary coreboot....rom file, replace with my original MAC and flash the binary? (I mean the file in the /tmp directory after script run)

I don't know that your cooling system isn't working properly - there's always going to be a push/pull between the fan and CPU load, and that's just where your system reached an equilibrium for the given CPU load.

As for the MAC, I'm not sure why you feel the need to replace it, since the default is just as valid as the unique one that came with the device. OR where you have your original MAC that you want to use as the replacement.

Will this script work on a Samsung Chromebox i5 2450M?

yes, it's listed as supported, but the Series 3 Samsung boxes can be quite temperamental with the custom firmware - sometimes they don't like the RAM included with the box, and you need to use one stick only or a different pair. It's not a recommended device for sure, as per the wiki.

Hi Matt:
Recently upgraded to a 4K HDTV. I run the Chromebox GUI @ 1080p 60Hz but it defaults to 120Hz during playback because that is the highest refresh rate Kodi detects and all my media is common to that refresh rate. I've tried to use 120Hz but I get stuttering. So I'd like to "cap" 1080p @ 60Hz. As I remember I can SSH into the Chromebox and look at/edit the mode line & remove 120Hz...but I don't remember the exact syntax to do it. Would you mind gently nudging me in that direction? Much appreciated!

if you have the GUI fixed to 1080p60 and want your video to playback at that as well, simply disable the auto refresh rate switching under the Video Playback options - no need for any config hacking.

Hey Matt,

So there random turn on issue is still present, I tried to take a closer look at the dmesg logs and I think it is the BD remote but can't tell for sure, even then it powers on at literally random times so it's not consistent, would you be able to tell me caused the last power on/resume in the logs below ?, if it is the BD remote then I don't really know why the remote is randomly sending a button press or signal.

https://dropfile.to/hGXYhzb

PS: Thanks for your site link, a lot of info on their, should probably add that link to your signature

there's nothing deterministic that I see in that log, but I'd suspect the BD remote. Can you disable bluetooth and just use a wireless KB for a bit to see if that's indeed the issue?