Jaakko Korhonen korjaa

grub bootloader changes

Two changes were required for GRUB bootloader

Adding 15 second boot menu delay to grub config solves thunderbolt boot failure.

Delay is added to /etc/default/grub

$ cat /etc/default/grub
...

Building Commands

	def average_dbm(dbms):
	# https://en.wikipedia.org/wiki/Decibel
	# https://en.wikipedia.org/wiki/LogSumExp

	# Less numerically stable version:
	# 10*numpy.log10(numpy.mean(numpy.power(10, (dbms-30)/10)))
	bel_np = 0.5 * numpy.log(10) # Bel & Neper by definition
	dbel_np = bel_np / 10
	np_to_db = 1 / dbel_np

	import logging

	import cv2

	def main():
	cap = cv2.VideoCapture("uhU.webm")

	cap.set(cv2.CAP_PROP_POS_MSEC, 1000.0)
	#cap.set(cv2.CAP_PROP_POS_FRAMES, 1000.0)
	w, h = cap.get(cv2.CAP_PROP_FRAME_WIDTH), cap.get(cv2.CAP_PROP_FRAME_HEIGHT)

	#
	# Loops
	#

	# Loop files with weird names and reading from console stdin.
	while IFS= read -r -d $'\0' FILE; do
	read -p "Press Enter to continue to \"$FILE\"" </dev/tty
	done < <(find . -printf "%P\0" \| grep --null-data "filter")

	# Loop files with less surprises

	From: http://www.mp3car.com/vbulletin/engine-management-obd-ii-engine-diagnostics-etc/75138-calculating-mpg-vss-maf-obd2.html



	For the record, the first "one-line" MPG formula above, taken from
	my Circuit Cellar article, is off by 100! The "4.54" should in
	fact be "454". The correct formula is:

	MPG = (14.7 * 6.17 * 454 * VSS * 0.621371) / (3600 * MAF / 100) MPG
	= 710.7 * VSS / MAF

	# Install fromm Ubuntu Software Center

	# Add following to ~/.bashrc

	# Cool Retro Term doesn't properly identify as a 256 color terminal.
	# Force it to identify as xterm-256color instead of just xterm.
	[ -z "$COLORSCHEMES_DIR" ] \|\| export TERM='xterm-256color'