Tony Benoy tonybenoy

Sleep the panel on a headless Arch laptop

When running an Arch laptop as a headless server, the built-in panel often stays lit because:

consoleblank=N is a one-shot kernel idle timer. Once a printk (kernel log message) wakes the console, nothing re-arms it.
setterm --blank force doesn't work when redirected to /dev/tty1 from another shell — the blank ioctl needs tty1 to be the controlling terminal (you'll see Inappropriate ioctl for device).
On modern atomic-KMS drivers, /sys/class/drm/<connector>/dpms is read-only from userspace.

The reliable lever is the framebuffer blank interface: /sys/class/graphics/fb0/blank accepts:

I got Arch Linux ARM installed on a Lenovo Chromebook Duet! I mostly used the instructions from the Arch Wiki as reference.

I hereby claim:

I am tonybenoy on github.
I am tonybenoy (https://keybase.io/tonybenoy) on keybase.
I have a public key whose fingerprint is 84CC 4B4B 3CBE C3E1 9B56 AE3F 392A F228 0089 9E51

To claim this, I am signing this object:

	# --- Configuration ---
	# Your preferred DNS Servers
	$myDnsServers = @("2a10:50c0::ad1:ff", "2a10:50c0::ad2:ff", "1.1.1.1")

	# --- Function Definition ---
	function Update-AdapterDns {
	param (
	[Parameter(Mandatory=$true)]
	[string]$Mode # Options: "Set" or "Reset"
	)

	# Gentoo ARM on Crostini


	I got Gentoo ARM installed on a Lenovo Chromebook Duet!

	## 0. Before we begin

	- Enable Linux development environment in Chrome OS's settings
	- Get it running

	sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys E298A3A825C0D65DFD57CBB651716619E084DAB9
	sudo add-apt-repository "deb https://cloud.r-project.org/bin/linux/ubuntu $(lsb_release -cs)-cran40/"
	sudo apt-get install libcurl4-openssl-dev
	sudo apt-get install libfontconfig1-dev
	sudo apt-get install libharfbuzz-dev libfribidi-dev
	sudo apt-get install libfreetype6-dev libpng-dev libtiff5-dev libjpeg-dev

	# Figure out your own way of syncing apps from
	# an android device. I use google files and syncthings.
	# Share the folder with linux. I've named it msapps
	# I started it as a way to sync Microsoft apps
	for apk in /mnt/chromeos/MyFiles/Downloads/msapps/*.apk
	do
	adb install $apk

	done

	" plugins
	let need_to_install_plugins = 0
	if empty(glob('~/.vim/autoload/plug.vim'))
	silent !curl -fLo ~/.vim/autoload/plug.vim --create-dirs
	\ https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
	"autocmd VimEnter * PlugInstall --sync \| source $MYVIMRC
	let need_to_install_plugins = 1
	endif

	call plug#begin()

	xrandr --newmode $(gtf 1920 1080 60 \| grep -o '"1920x1080_60.00" .' \| sed 's/^\(.\)"\(.\)" \(.\)$/\2 \1 \3/') && xrandr --addmode VIRTUAL1 "1920x1080_60.00" && xrandr --output VIRTUAL1 --mode "1920x1080_60.00"
	nohup weylus --no-gui &

	Clone a hdd using dd rescue. Faster?
	sudo ddrescue -r 0 -v -v -n /dev/sdd1 /dev/sdc rescue.map --force --min-read-rate=1MB --skip-size=1MB -c 16