WebFreak001

Getting my Valve Index to run flawlessly on ArchLinux with i3wm

I've bought the Valve Index VR headset and wanted to play on Linux. I had done a lot of tinkering with my Linux Machine up to this point so quite a few things on the headset initially had issues working alright.

I have listed all of the problems I encountered on ArchLinux with Valve Index and Steam VR in this post and how I managed to solve nearly all of them.

When I first plugged in my headset, turned on the controllers and started

dlaehnemann

Flamegraphing in Rust can now be done with a new cargo subcommand. Please check this out before embarking on the legacy journey below: https://github.com/flamegraph-rs/flamegraph

flamegraphing rust binaries' cpu usage with perf

One-time setup

1. Install perf, using Brendan Gregg's guide: http://www.brendangregg.com/perf.html#Prerequisites
2. Install flamegraph from repo:

bgauduch

Setup multiple git identities & git user informations

/!\ Be very carrefull in your setup : any misconfiguration make all the git config to fail silently ! Go trought this guide step by step and it should be fine 😉

Setup multiple git ssh identities for git

• Generate your SSH keys as per your git provider documentation.
• Add each public SSH keys to your git providers acounts.
• In your ~/.ssh/config, set each ssh key for each repository as in this exemple:

hryniuk

#!/bin/bash

diff=$(cargo fmt -- --check)
result=$?

if [[ ${result} -ne 0 ]] ; then
    cat <<\EOF
There are some code style issues, run `cargo fmt` first.
EOF
    exit 1

spacejam

using rust with rr

rr is a great debugging tool. it records a trace of a program's execution, as well as the results of any syscalls it executes, so that you can "rewind" while you debug, and get deterministic forward and reverse instrumented playback. it works with rust, but by default if you try it out, it could be pretty ugly when you inspect variables. if this bothers you, configure gdb to use a rust pretty-printer

rr is probably in your system's package manager.

usage

belst

Deploy Rocket using Letsencrypt and nginx

Information

This guide uses the domain your-domain.tld and its www. prefixed version. It starts the rocket application on 127.0.0.1:1337 and as the user www-data. The proxy listens on port 80 and 443 though.
If you need other values, update them accordingly in your nginx and systemd configs.

Prerequisites

You need to have nginx, certbot and rust installed.

alexlee-gk

This was tested on a ThinkPad P70 laptop with an Intel integrated graphics and an NVIDIA GPU:

lspci | egrep 'VGA|3D'
00:02.0 VGA compatible controller: Intel Corporation Device 191b (rev 06)
01:00.0 VGA compatible controller: NVIDIA Corporation GM204GLM [Quadro M3000M] (rev a1)

A reason to use the integrated graphics for display is if installing the NVIDIA drivers causes the display to stop working properly. In my case, Ubuntu would get stuck in a login loop after installing the NVIDIA drivers. This happened regardless if I installed the drivers from the "Additional Drivers" tab in "System Settings" or the ppa:graphics-drivers/ppa in the command-line.

KonradIT

DEPRECATED:

New repo: https://github.com/konradit/gopro-linux

Kartones

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)