White Screen During Setup. Tried everything

I’m trying to set Magento up locally using MAMP, and I’m getting the WSOD. I’ve changed permissions, to the point that just about everything has full permissions, and still nothing

I’m running php 7.2, and I’ve been able to run composer install without any issues. When I check the network tab, I see the setup index.php come through with a 500 error.

my cgi.fix_pathinfo is set to 1, I have a db created in phpmyadmin with the same name as the root folder, and both the debug log and system log have 2 lines that say:

main.ERROR: Error: Application is not installed yet. [] []

Setup Nvidia 1070Ti external GPU

I have Dell XPS 9570. I am trying to connect egpu using thunderbolt 3 port.

OS: Ubuntu

My laptop has an internal 1050Ti graphic card. So the system is not recognizing the external GPU. I tried to disable it from the bios but I did not find any options that are suggested online. The GPU is not detected in both ubuntu and windows OS.

How can I fix this issue?

Authentication setup advice for web app and its backend API

I am fairly new to web development, and I am learning to build web applications. I am facing a problem figuring out how to set up authentication mechanisms for a multi-user application. Let me provide some details about the architecture: Architecture

Here I have two web servers – Front-end application (written in Angular) and a back-end REST API. The two exist separately to have a more decoupled system (back-end provides the data, front-end presents it), as well as to allow third-parties to implement their own client-side applications. I am not sure if it is relevant, but the back-end API is a PostgREST web-server sitting on top of a PostgreSQL database.

As I mention before, this is a multi-user application, so I would also like to set up authentication for clients. In the context of my architecture it means setting up authentication for www.domain.com to api.domain.com as well as for client to www.domain.com. I think that it makes more sense to use token-based authentication to access the back-end API, as it will not be accessed by browser-based client directly. As for the authentication on www.domain.com I think I have options to either go for token-based or session-based authentication. If am getting it right the authentication process should look something like this: enter image description here

The problem is that I do not understand how to set up the translation of clientwww.domain.com authentication to the one between www.domain.com and api.domain.com. What kind of authentication mechanism is most suitable for the browser-frontend communication in this situation? How to “forward” the authentication to the back-end API? Is there another way of achieving this?

How to setup a loopback audio device on startup

My environment is Ubuntu 18.04 x64.

I want to create a virtual audio device and connect it to a real speaker when the OS starts up.

I’ve confirmed these operations by entering the following commands to the terminal(*Device names are some omitted):

sudo modprobe snd-aloop pcm_substreams=2

pactl load-module module-loopback source=alsa_output.platform-snd_aloop sink=alsa_output.pci

I wrote them in “/etc/rc.local” and “/etc/pulse/default.pa” but it didn’t work.

Please tell me target files for startup setting and the correct text.

Setup normal screeshot procedure?

If I press PrintScreen button, a Spectacle application starts and allows me to take screenshot with following key and mouse strokes.

Can I make it proceed immediately, without additional actions?

If Spectacle application is already started, then nothing happens on PrintScreen button.

I.e. depending on status of Spectacle application, I should either press PrintScreen or look for Spectacle application in the list of running application — a lot of additional actions.

Can I make application activated on PrintScreen button?