Keysound: a keyboard sound software

Hello everyone, I am a beginner at cpp. As I learned cpp for a while, I wanted to practice the skills of cpp, so I wrote this software. The code is not well, but the soft works well.

Here is the code: https://github.com/fgheng/keysound

Here is some video:

You can define each key with a special sound:

https://reddit.com/link/lz0zln/video/w74fnauxmel61/player

You can use the `piano.json` to play the piano by keyboard, here is some music that I play, I am not good at piano, hahaha:

https://reddit.com/link/lz0zln/video/jzizachzmel61/player

https://reddit.com/link/lz0zln/video/auyz03n0nel61/player

https://reddit.com/link/lz0zln/video/ipqvbl31nel61/player

You can play the piano by rewriting the char:

https://reddit.com/link/lz0zln/video/4c613a44nel61/player

https://redd.it/lz0zln
@r_linux

labwc 0.1.0 released

Labwc is a wlroots-based stacking compositor for Wayland.

It has the following aims:

Be light-weight, small and fast
Have the look and feel of openbox albeit with a smaller feature set
Where practicable, use clients to show wall-paper, take screenshots, and so on
Stay in keeping with wlroots and sway in terms of approach and coding style

Github page

#

https://redd.it/lz14dk
@r_linux

Linux Timeline direction discussion

The Linux Timeline direction is open for discussion since a while at: https://github.com/FabioLolix/LinuxTimeline/issues/157

Decision taken so far are listed here: https://github.com/FabioLolix/LinuxTimeline/issues/158

Who don't want to create a github account is welcome to post here of course

https://redd.it/lz22cy
@r_linux

The compose sequence for "Rx"

If you know its LaTeX, please include that, too.

Wikipedia's page for Rx has a single character showing on its first line, "℞", but there's no historical information on that glyph.

https://redd.it/lz4zre
@r_linux

Using Podman and Docker Compose - Podman 3.0 now supports Docker Compose
https://www.redhat.com/sysadmin/podman-docker-compose

https://redd.it/lz7hjw
@r_linux

Debian or Pop?

Moving on from arch. Been playing around with the live ISO of debian and pop. Just wondering if people have an opinion either way.

I hate derivative distros (like pop) that have so much set up out of the box because you never get a firm grasp of what's going on.....ie power management, is microcode installed?, what repositories are in use, etc. With something like debian you pretty much have to set that all up on your own so you know your system better. Yes you can go through all that on Pop but it's just checking to see if it's done or not.

On the other hand having something mostly set up out of the box is a time saver. Also, I feel like the creators of Pop really know what they're doing. Systemd boot is nice. The GPU switcher on pop is amazing so are their GNOME keyboard shortcuts.

I don't know what to do :\\

https://redd.it/lz7cdo
@r_linux

Linux tablets

I came across this video:

https://youtu.be/DrqdHVeBkp4

Now I wonder what is the easiest mini pc that can run Linux that i can use so I can create my own Linux tablet. A RPi seems to power hungry and thick

https://redd.it/lz9whl
@r_linux

Help hplip get moved to git

hplip powers many printers and scanners on Linux, but there's no sane way to contribute to it.

For example, Debian has 60 patches applied to hplip:
https://sources.debian.org/patches/hplip/3.21.2+dfsg1-2/

That is insane!

So I propose something simple, giving some traction to this topic so HP moves the source code to Gitlab or Github, so it's easy to contribute to it and see those fixes on the original source code and each Linux distro.

Here:

https://bugs.launchpad.net/hplip/+bug/1918006/+affectsmetoo

https://redd.it/lzb8k0
@r_linux

Librem 5 News Summary: February 2021
https://puri.sm/posts/librem-5-news-summary-february-2021/

https://redd.it/lzey4s
@r_linux

Ableton on Linux

Ok, so Im an aspiring music producer doing EDM music. I always run Linux because its far far superior to Windows. But Ableton doesn't work like it should and it could actually deter a beginner from pursuing music which is ridiculously simple. You can't pull samples into the browser. This means you have nothing to use to set the BPM of the track. If you can't quantize your samples to all run in the same BPM its like a trainwreck. If you're serious about music get a real instrument. Buy a Mac. They are superior hardware and the OS is built on a BSD core so its just like Linux. But use software on the platform it was designed on. Ableton works exactly like it should but you can't give any feeling to your music unless you have a beat to use. You have to be able to play each chord on each 1/4 beat.

The only thing Ableton on Linux is good for is some limited jamming using the sample view because you can set the BPM to the same and play along with a song. I seriously only got to using it because Im pretty poor and only own one good PC. Its a Dell XPS running Ubuntu. But Im about to get a new Macbook next week so I'm dying to get it because Im so ready to make music and like I said EDM is one of the easiest but most beautiful art forms. Its all about the quality of your samples. And of course your imagination.

But imagine trying to mix two records together that aren't beat matched. Its not pretty. I don't care how bad ass your bass lines and chords are if they are beat matched and quantized (tied) to a beat sample they won't sound right. If you don't believe me just do this in Ableton. Put all of a G minor scale in the piano roll and fold them into one. You can play the most beautiful progression which to me is Gm A#m G#m C. Now just take the triads and move them up and down the scale. The entire thing changes when you play chords using notes from the scale. You can add 7th 9th 11th, suspend the 2nd and 4th. Point is that you can make an infinite number of patterns using notes from the scale of G minor. But it will sound boring as hell if you can only play 4 or 8 bars at a time and the chords don't sound on each beat.

https://redd.it/lzex21
@r_linux

Cant putty in

Pic 1: https://i.imgur.com/oJf8ZHs.jpg
Pic 2: https://i.imgur.com/XQN62bI.jpg

Made a Fedora droplet. Trying to PUTTY in. IP is entered correctly, droplet is on, and I enter "root" in the console and an error message displays.

What did I do wrong?

https://redd.it/lzg588
@r_linux

Linux vs Windows, Round 1, as Told by a Totally Neutral Retired Microsoft Windows Dev
https://youtu.be/a9ZADRy5W0c

https://redd.it/lzhob8
@r_linux

Online linux envirnment

Hey linux community,
I am looking for a solution instead of buying a computer, i vnc into an online ubuntu enverinment. Is there such thing?
I would prefer with a gui,
Aws?
Is there qny open source solutions?
Regards

https://redd.it/lzkqml
@r_linux

Create a Virtual Microphone on Linux with Pulseaudio for Obs Studio

I went through this video because I needed a virtual audio solution similar to what is available in windows, but when I reboot my system... my audio stopped working. I had to completely wipe my machine and re install it again.

From my understanding, the problem appears to be the persistent aspect of this noscript. What is causing this problem? Please help. I want to be able to auto establish these virtual audio cables.

https://youtu.be/Goeucg7A9qE

https://redd.it/lzmf5l
@r_linux

I think I found out where my disk space vanished... tumblerd took it!!
https://redd.it/lzmzbk
@r_linux

SuperB Bootstrap: OS bootstrap-system/dotfiles-manager framework want to add support for your Linux-distro

​

[OS bootstrap-system\/dotfiles-manager framework that SuperB](https://preview.redd.it/1z8sfoduxkl61.png?width=2456&format=png&auto=webp&s=1664da3e8617d3d2d2d7eee3b43b946a65ebcdef)

## About

[**SuperB Bootstrap**](https://github.com/NNBnh/superb-bootstrap) is a *SuperB* OS bootstrap-system/dotfiles-manager framework that can be installed with just one command on a new Unix system installation.

## Features

* Super **portable**, work on almost any Unix and Unix-like operating system, it can even install dotfiles locally
* Don't know anything about [git](https://git-scm.com/)? Dont't worry, SBB dotfiles can be host via [Nextcloud](https://nextcloud.com/), [Google drive](https://www.google.com/drive) or [Dropbox](https://www.dropbox.com/)...
* Super **minimum** [dependencies](https://gist.github.com/NNBnh/bd2b4edef2e18b65296d6db189009c79#dependencies), you don't need to install anything before the installation process
* Super **organized** [file structure](https://gist.github.com/NNBnh/bd2b4edef2e18b65296d6db189009c79#setup) to config and share
* Super **easy** to [setup](https://gist.github.com/NNBnh/bd2b4edef2e18b65296d6db189009c79#setup) and [install](https://gist.github.com/NNBnh/bd2b4edef2e18b65296d6db189009c79#usage):
* Similar to [Stow method](http://brandon.invergo.net/news/2012-05-26-using-gnu-stow-to-manage-your-dotfiles.html), it's managing your dotfiles by storing them in a subdirectory (`dotfiles/home/`, `dotfiles/root/`) and symlinking them to their original location
* You can even install your dotfiles with **just one command** from a new Unix system installation
* Super **flexible** with one config, you can bootstrap **cross-platform**. Current supported package managers are:
* [APT](https://wiki.debian.org/Apt)
* [Portage](https://wiki.gentoo.org/wiki/Portage)
* [Pacman](https://wiki.archlinux.org/index.php/Pacman)
* [XBPS](https://docs.voidlinux.org/xbps/index.html)
* [Zypper](https://en.opensuse.org/Portal:Zypper)
* [AUR](https://wiki.archlinux.org/index.php/Arch_User_Repository)
* [Homebrew](https://docs.brew.sh/)
* [Flatpak](https://flatpak.org/)
* [Snap](https://snapcraft.io/)

## Help wanted

We want SBB to supported as many package managers as possible and we need your help by contribute to [this github issue](https://github.com/NNBnh/superb-bootstrap/issues/5).

# [SBB repo](https://github.com/NNBnh/superb-bootstrap) | [Help wanted](https://github.com/NNBnh/superb-bootstrap/issues/5)

https://redd.it/lznqz4
@r_linux

systemd-resolved - fix for vpn dns resoution fedora systemd

As usual updates mess up Fedora, now that Fedora 33 started using systemd-resolved instead of /etc/resolv.conf for DNS resolution. The Default does not provide #DNS and #FallbackDNS. So, This gets problematic for vpn users who connect via openvpn. So, let's fix this by adding Google dns and Cloudflare DNS to resolved.conf

\# DNS Fix

sudo sed 's/#DNS=/DNS=9.9.9.9 1.1.1.1 8.8.8.8/g' -i /etc/systemd/resolved.conf
sudo sed 's/#FallbackDNS=/FallbackDNS=1.0.0.1 4.2.2.2 8.8.4.4 2606:4700:4700::1111 2606:4700:4700::1001 2001:4860:4860::8888 2001:4860:4860::8844 2620:fe::fe/g' -i /etc/systemd/resolved.conf
sudo service systemd-resolved restart
systemd-resolve --status ; #now

https://redd.it/lzoby5
@r_linux

nftables masquarade 'no such file or directory'

Hi

How to fix the problem with below nft rule?

nft add rule nat postrouting oifname "eth1" masquerade

I got error 'no such file or directory'. I think I should add somewhere masquerade module but I don't know how.

Unfortunately I don't have firewalld.

https://redd.it/lzqetd
@r_linux

Wayland on Ubuntu

I tried Ubuntu 20.04 with Wayland but it was so laggy. There is tearing down in all gnome extensions. I just search about it and it was a problem for lots of Linux users specially gnome.
Is it good idea for Ubuntu 21.04 to use Wayland as a default display?

https://redd.it/lzr276
@r_linux

Airplane Mode - Use hardware switch to turn off

I am using HP Probook 4540s. I am unable to turn off the airplane mode.
The output of rfkill list all shows the output:

  Wireless LAN
  Soft blocked: no 
  Hard blocked: yes
  

I have tried multiple ways to remove the hard block but all in vain.

I even tried two flavours of Linux like Ubuntu 20.04, Manjaro Gnome.

Nothing helped. Please help me resolve this issue.

https://redd.it/lzspy1
@r_linux

should i make the switch?

due to a recent update on my windows 10 system that somehow managed to break my computers wallpaper made me question the windows 10 operating system and i was looking into what are the differences between linux and windows but from what i found it was mostly all about what is better for people who code while im more of an avarage user, the most my laptop does is play some games other than that i dont really push my pc very hard so i wanted to know from an avarage users standpoint should i make the switch from windows 10 to linux

https://redd.it/lzv2o7
@r_linux