braian87b

Install and setup Ubuntu at a new Lenovo ThinkPad P14s Gen 3 with NVIDIA T550.

Lenovo provides a short document how to install Ubuntu 20.04

Enter BIOS and disable secure boot, to boot from USB Stick
Install Ubuntu, with "Install third-party software" enabled to include NVIDIA drivers

Update firmware

Debian 13

Caution Upgrading from Debian 12 to Debian 13 on machines with mdadm has intermittently failed for me; symptom is that grub EFI is not up to date and system boots into BIOS. Root cause under investigation; it might not be related to mdadm.

To start, read the official release notes.

If your install fits into "vanilla Debian plus maybe a handful of 3rd-party repos", then this guide for a simple upgrade to Debian 13 "trixie" from Debian 12 "bookworm" can be helpful. 3rd-party repos are handled with a find command.

Note upgrade is only supported from Debian 12 to Debian 13. If you are on Debian 11, upgrade to Debian 12 first. Then once on Debian 12, you can upgrade to Debian 13.

	#!/bin/sh
	#takes one argument/parameter: the name of the package which didn't install correctly and should be removed along with its dependencies
	#do opkg update first
	#example: ./opkgremovepartlyinstalledpackage.sh pulseaudio-daemon

	#get list of all packages that would be installed along with package x
	opkg update
	PACKAGES=`opkg --force-space --noaction install $1 \| grep http \| cut -f 2 -d ' ' \| sed 's/.$//'`
	for i in $PACKAGES
	do

	# A minimal SQLite shell for experiments

	import sqlite3

	con = sqlite3.connect(":memory:")
	con.isolation_level = None
	cur = con.cursor()

	buffer = ""

	# This program is free software: you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation, either version 3 of the License, or
	# (at your option) any later version.
	#
	# This program is distributed in the hope that it will be useful,
	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	# GNU General Public License for more details.
	#

	# Generate your identity key on openwrt
	dropbearkey -t rsa -f ~/.ssh/id_rsa
	# Convert public key from dropbear binary to openssh text
	# Copy and paste output from below to bitbucket account ssh keys
	dropbearkey -y -f ~/.ssh/id_rsa \| head -n 2 \| tail -1

	# Change git ssh command
	echo "#!/bin/sh" > ~/.gitssh.sh
	echo "dbclient -y -i ~/.ssh/id_rsa \$\*" >> ~/.gitssh.sh
	chmod +x ~/.gitssh.sh

	# ========================================================
	# Setup a Dumb AP, Wired backbone for OpenWRT / LEDE
	# ========================================================
	# Set lan logical interface as bridge (to allow bridge multiple physical interfaces)
	uci set network.lan.type='bridge'
	# assign WAN physical interface to LAN (will be available as an additional LAN port now)
	uci set network.lan.ifname="$(uci get network.lan.ifname) $(uci get network.wan.ifname)"
	uci del network.wan.ifname
	# Remove wan logical interface, since we will not need it.
	uci del network.wan

	#!/bin/sh

	################################################################
	# Individual channel setting per distinct AP

	case `uci get system.@system[0].hostname` in
	"ap1")
	CHANNELS="36 1"
	;;
	"ap2")

	##based on braian87b/pure_debian_on_iomega_ez.sh https://gist.github.com/braian87b/b5a4c5f20d1112473c470b096df766a3#file-pure_debian_on_iomega_ez-sh-L114


	#download rootfs
	root@osmc:/home/osmc/529# wget https://www.dropbox.com/s/pa2cbg93qgcnp8w/Debian-5.2.9-kirkwood-tld-1-rootfs-bodhi.tar.bz2
	root@osmc:/home/osmc/529# mkdir Debian-5.2.9-kirkwood-tld-1-rootfs-bodhi
	root@osmc:/home/osmc/529# tar -jxvf Debian-5.2.9-kirkwood-tld-1-rootfs-bodhi.tar.bz2 -C Debian-5.2.9-kirkwood-tld-1-rootfs-bodhi

	# These are the files:
	root@osmc:/home/osmc/529# ls -lht ./Debian-5.2.9-kirkwood-tld-1-rootfs-bodhi