Garth Vander Houwen garthvh

Lenovo ideapad 330 (15ARR) ubuntu issues and their solutions

Issue-1: None of the ubuntu distros are getting installed

Solution: Ubuntu distros lower than 18.10 will not work in this laptop, as minimum kernal version required is 4.18.

So install ubuntu 18.10 / xubuntu 18.10 / lubuntu 18.10 / kubuntu 18.10 in UEFI mode

Issue-2: Wifi is not working

Autodesk Fusion 360 on Linux

In the Web Browser

Ubuntu, Fedora, openSUSE, CentOS, SUSE Linux Enterprise, Debian,... users can finally use Autodesk Fusion 360 in the Linux Browser now.

https://myhub.autodesk360.com

On Chromium 55.0.2843.0 I get NET::ERR_CERTIFICATE_TRANSPARENCY_REQUIRED.

Using a rotary encoder as a volume control

On my RetroPie machine I wanted a hardware volume knob — the games I play use a handful of emulators, and there's no unified software interface for controlling the volume. The speakers I got for my cabinet are great, but don't have their own hardware volume knob. So with a bunch of googling and trial and error, I figured out what I need to pull this off: a rotary encoder and a daemon that listens for the signals it sends.

Rotary encoder

A rotary encoder is like the standard potentiometer (i.e., analog volume knob) we all know, except (a) you can keep turning it in either direction for as long as you want, and thus (b) it talks to the RPi differently than a potentiometer would.

I picked up this one from Adafruit, but there are plenty others available. This rotary encoder also lets you push the knob in and treats that like a button press, so I figured that would be useful for toggling mute on and off.

Jekyll & Liquid Cheatsheet

A list of the most common functionalities in Jekyll (Liquid). You can use Jekyll with GitHub Pages, just make sure you are using the proper version.

Running

Running a local server for testing purposes:

	/*
	Thanks to Elliotmade for the inspiration on this project
	https://elliotmade.com/2020/04/23/physical-mute-button-for-zoom-meetings/

	Refactored by HaxNobody to extend functionalty and add comments for my own understanding

	This program will send USB HID keyboard presses to bring the Zoom window into
	the foreground and activate microphone and video functions.
	* A momentary press on button 1 will toggle mute on or off.
	* Press and hold button 1 to activate PTT (Push-to-Talk) functionality.

	import SwiftUI
	import PlaygroundSupport

	struct Screen: View {
	var body: some View {
	VStack {
	ChatTopView()
	ConversationView()
	ChatBottomBar().padding(.bottom, 10)
	}

	# One liner
	wget --recursive --page-requisites --adjust-extension --span-hosts --convert-links --restrict-file-names=windows --domains yoursite.com --no-parent yoursite.com

	# Explained
	wget \
	--recursive \ # Download the whole site.
	--page-requisites \ # Get all assets/elements (CSS/JS/images).
	--adjust-extension \ # Save files with .html on the end.
	--span-hosts \ # Include necessary assets from offsite as well.
	--convert-links \ # Update links to still work in the static version.

	# Backup
	docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

	# Restore
	cat backup.sql \| docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

	#!/bin/bash

	SERVICE='motion'
	RUN_COMMAND='nice -n 10 /usr/local/bin/motion &'
	LOGFILE=/home/pi/motion/motion.log
	VOPATH=/media/data/motion # video output directory
	LIMIT=90 # maximum disk usage

	if [ ! $(pidof $SERVICE) ]
	then

	1 - Create the file /etc/modprobe.d/8192cu.conf
	2 - Add the following line to the file

	options 8192cu rtw_power_mgnt=0 rtw_enusbss=0

	3 - Reboot
	4 - Check if power saving mode is switched off (0 = off, 1 = on)

	cat /sys/module/8192cu/parameters/rtw_power_mgnt