Tamal Mukherjee Tamal

ThinkPad T480 fingerprint reader on Fedora Linux

Background

The Synaptics fingerprint sensor (06cb:009a) present on my T480 is not supported by libfprint and fprintd as it requires a non-free binary blob. uunicorn created open-fprintd, a replacement for fprintd, that allows for loading of binary blobs. In conjunction with their python-validity driver we are able to make use of the inbuilt fingerprint reader. The following instructions were tested against Fedora Linux 35.

Installing `open-fprintd` and `python-validity`

sudo dnf copr enable tigro/python-validity
sudo dnf install open-fprintd fprintd-clients fprintd-clients-pam python3-validity

Install cuda and nvdia driver

sudo dnf config-manager --add-repo=http://negativo17.org/repos/fedora-nvidia.repo
sudo dnf install cuda-devel cuda-cudnn-devel
sudo dnf install nvidia-settings kernel-devel dkms-nvidia vulkan nvidia-driver-libs nvidia-driver-cuda

Install tensorflow gpu

pip install tensorflow-gpu

Setting up a SSL Cert from Comodo

I use Namecheap.com as a registrar, and they resale SSL Certs from a number of other companies, including Comodo.

These are the steps I went through to set up an SSL cert.

	#! /bin/sh

	# Minikube update script file
	# For Macs use /latest/minikube-darwin-arm64

	minikube delete && \
	sudo rm -rf /usr/local/bin/minikube && \
	sudo curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 && \
	sudo chmod +x minikube && \
	sudo cp minikube /usr/local/bin/ && \

	$ # Use Live CD to boot
	$ sudo su # Switch to root
	$ fdisk -l # Get names of root, boot & EFI partition names. you can also use blkid
	$ mount /dev/mapper/fedora_localhost--live-root /mnt # mount root partition
	$ cat /mnt/etc/fedora-release
	Fedora release 31 (Thirty One)
	$ mount /dev/nvme0n1p2 /mnt/boot # mount boot partition
	$ mount /dev/nvme0n1p1 /mnt/boot/efi # mount EFI partition
	# Note: If you are not able to mount EFI partition ('Input/Output error'),
	# You may have to repair ESP file system or format ESP.

	// Based on Glacier's example: http://docs.aws.amazon.com/AWSJavaScriptSDK/guide/examples.html#Amazon_Glacier__Multi-part_Upload
	var fs = require('fs');
	var AWS = require('aws-sdk');
	AWS.config.loadFromPath('./aws-config.json');
	var s3 = new AWS.S3();

	// File
	var fileName = '5.pdf';
	var filePath = './' + fileName;
	var fileKey = fileName;

	$ git clone [email protected]:xxxxx/xxxx.git my-awesome-proj
	Cloning into 'my-awesome-proj'...
	ssh: connect to host github.com port 22: Connection timed out
	fatal: Could not read from remote repository.

	$ # This should also timeout
	$ ssh -T [email protected]
	ssh: connect to host github.com port 22: Connection timed out

	$ # but this might work

	import {action1, action2} from "myActions";
	import {bindActionCreators} from "redux";

	const mapDispatchToProps(dispatch) => {
	return {
	manuallyBoundAction : (...args) => dispatch(action1(...args)),
	autoBoundAction : bindActionCreators(action2, dispatch),
	multipleActionsTogether : bindActionCreators({action1, action2}, dispatch)
	}
	};

	// the main app file
	import express from "express";
	import loadDb from "./loadDb"; // dummy middleware to load db (sets request.db)
	import authenticate from "./authentication"; // middleware for doing authentication
	import permit from "./permission"; // middleware for checking if user's role is permitted to make request

	const app = express(),
	api = express.Router();

	// first middleware will setup db connection

	// 🔥 Node 7.6 has async/await! Here is a quick run down on how async/await works

	const axios = require('axios'); // promised based requests - like fetch()

	function getCoffee() {
	return new Promise(resolve => {
	setTimeout(() => resolve('☕'), 2000); // it takes 2 seconds to make coffee
	});
	}