Quote from: n0nce on November 16, 2022, 10:45:25 PM

I'd recommend you to read about Linux permissions and why not to use chmod 777.
Then go back and restrict the permissions as much as possible. The miner may or may not need sudo, in any case permissions should be drastically reduced to something like 744 or even 700.

Thank you very much, I read those explanations and it brought back vague memories from decades ago when I started to read some "Linux for Dummies" book! Unfortunately I never got very far with it, the various OS's improved so rapidly that I did not need to develop a deeper understanding to enjoy very functional Linux OS's.

However, it looks like the permissions are still set to chmod 700:

Code:

/Mining/Apollo/Apollo-Standard_software/linux-x86_64$ ls -l
total 424
-rwx------ 1 p p 290720 Dec 2 2021 apollo-miner
-rwx------ 1 p p 6899 Nov 17 07:48 apollo-miner.390052000C50435635363920
-rwx------ 1 p p 95373 Nov 17 07:48 miner.events
-rwx------ 1 p p 498 Dec 2 2021 miner_start_all.sh
-rwx------ 1 p p 463 Dec 2 2021 miner_stop.sh
-rwx------ 1 p p 4141 Nov 17 07:12 start_apollo.sh

Obviously the CHMOD 777 command did not work, which is why I asked the question when I was stuck being unable to execute the miner software. I still don't understand why, but no problem, it will eventually become clearer.
I had no idea what CHMOD 777 does, I just knew it because some customer support person told me to use it when I had issues with a VPN not wanting to cooperate.

Quote

I wouldn't change the fan curve, since you run risk of burning the device up. I know it's really loud, but I recommend adding an extra fan, instead.

That is of course very sensible advice, but I have already added several fans and built a contraption that will let me test what kind of fans and fan speeds will work best for various conditions.
When I use the Full Package Apollo (with my contraption) and set the temperature curve to 65/70degC, the built-in fan continues to run at around 1800rpm and the temperature stays below 60C, but I can still hear it. It's much quieter, but not as good as what I am aiming for.
But with the Standard Apollo I cannot (yet) set the temp curve even a little higher to get the built-in fan to spin at it's apparent minimum speed of 1800rpm. So it is louder than a Full Package Apollo with the same added fan contraption.

The contraption has 2 SPDT switches and 2 trimpots to adjust the reduced fan speed for 2 fans. It put's the power supply under the Apollo and uses exhaust air from the power supply to cool the Orange Pi. That might be a bad idea, but I will soon have some measurement data to clarify that.