applecargo

Jitsi Meet install on a Raspberry Pi 4 with Ubuntu Server 20.04

This guide helps you host your own Jitsi server on a Raspberry Pi 4B. It is adapted from Jitsi's quick install guide and the Jitsi on ARM guide written by crouchingtigerhiddenadam. The biggest difference is this is designed to work with a Pi running Ubuntu Server 20.04 instead of Raspbian.

I did this because I'd rather set up Jitsi Meet on a Raspberry Pi I already own than add a dedicated VPS (and pay AWS's bandwidth costs) just for that. I used Ubuntu 20.04 because I'm more familiar with Ubuntu than with Raspbian, and using an arm64 OS makes the setup easier than on armhf. I also tried to use distribution packages instead of manually downloading individual deb files throughout.

Prerequisites

This guide assumes you already have a DNS name set up with an A record pointing

applecargo

<?xml version="1.0"?>
<launch>

  <machine name="imgproc" address="ubuntu-imgproc.local" user="ubuntu" timeout="10.0" default="never" env-loader="/home/ubuntu/ros_env.sh"/>

  <!-- image processor -->
  <node machine="imgproc" pkg="knut_ai_vehicle" type="image_processing.py" name="image_processor" ns="image_processor">
  </node>

</launch>

applecargo

pcm.swapped {
    type route
    slave {
        pcm "hw:0"
        channels 2
    }
    ttable.0.1 1
    ttable.1.1 1
}

applecargo

# First su in as root
sudo su

# Then set fan control to manual mode
echo 1 > /sys/devices/platform/applesmc.768/fan1_manual

# Then set the fan speed to any value between fan1_min and fan1_max. To view these values
cat /sys/devices/platform/applesmc.768/fan1_min
cat /sys/devices/platform/applesmc.768/fan1_max

applecargo

// for example, if we have a mp3 at "audio/tuba@7/01.mp3"

var test = new Tone.Player("audio/tuba@7/01.mp3").toMaster(); // load and connect

test.retrigger = true; // enable retrigger

test_srcs = []; // prepare an array to keep track of sounds..

test_srcs.push(test.start()._source); // start playbacks and collect their '_source's..
test_srcs.push(test.start()._source);

applecargo

Fixing jack audio on ARM Ubuntu 14.04

Install prerequisite packages:
$ sudo apt-get build-dep jackd2

Install the source package:

$ apt-get source jackd2

Downloads the source into the current directory and applies the Ubuntu

applecargo

#!/bin/sh

xset fp+ "/usr/share/fonts/truetype/ttf-dejavu"
xset fp+ "/usr/share/fonts/truetype/nanum"

applecargo

#!/bin/sh

export GTK_IM_MODULE=ibus
export XMODIFIERS=@im=ibus
export QT_IM_MODULE=ibus
ibus-daemon -drx

applecargo

!Emacs.font: Dejavu Sans Mono-12
!Emacs.FontBackend: xft
Emacs.useXIM: off

applecargo

;;repositories
(setq package-archives '(("gnu" . "https://elpa.gnu.org/packages/")
			 ("marmalade" . "https://marmalade-repo.org/packages/")
			 ("melpa" . "https://melpa.org/packages/")))

;;
;;2015.12. - after emacs update.. helm is not working!! unbinding keys..
;;
;;(global-set-key (kbd "C-x b") 'helm-mini)
;;(global-set-key (kbd "M-x") 'helm-M-x)