[arm-allstar] dmesg output

Don Backstrom - AA7AU z-armallstar at deliberate.net
Fri Nov 30 12:30:40 EST 2018


On Fri 30-Nov-18 08:36, "Roger Coudé via ARM-allstar" wrote:
> If I use more than one PI at one location, I need an ethernet  hub, a new fan, and a second power supply in the box.
> We have many sites and using a single PI would be cost effective, we are talking about thousands of dollars.
> I have heatsink and fan everywhere, so the turbo mode is something I can try.
> The site that gives the more error messages is a running with a 3B+
> I will try with turbo mode.

	Roger:

	If you're going to push that PI3B/3B+ for max performance, I'd suggest 
that you might want to turn off the built-in Bluetooth:  Use menu #9 
(bash shell) and then edit the basic Pi start-up file with:
	nano /boot/config.txt
to insert the following additional line:
	dtoverlay=pi3-disable-bt

	This hopefully eliminates the power use for, and the stray RF from, 
that built-in (and on-by-default) BT radio. If one is not using their 
WiFi for connectivity in a PI3, you can add this line as well:
	dtoverlay=pi3-disable-wifi

	BTW: If you do so, make good note of this as I don't think that Doug's 
terrific little file-backup.sh routine addresses this boot startup 
control file.

	I do this for every PI3 I work on unless we are specifically using 
WiFi. There's enough stray RF around, why add to it? When we do want a 
second NIC connection on a PI3, we generally use a USB-ethernet adapter 
instead of WiFi - but that takes some editing down in the bowls of 
ArchLinux to run properly.

	Good luck with those UW cables (those backhoes get everywhere),

	- Don - AA7AU


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