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Archives For November 30, 1999

How to Switch Back Old Desktop Theme in Ubuntu 18.10

Last updated: November 8, 2018

gnome shell

Ubuntu 18.10 was released with great new desktop theme ‘Yaru’. However, there are always some people prefer old Ubuntu desktop look.

And it’s easy to restore the old desktop theme in Ubuntu 18.10 via following steps.

1. Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for ‘terminal’ from software launcher. When it opens, run command to install light-themes:

sudo apt install light-themes

Type user password (no asterisks feedback) for sudo prompts and hit Enter.

2. Install Gnome Tweaks if you don’t have it:

3. Finally launch Gnome Tweaks and navigate to Appearance tab.

There set themes to:

  • Applications -> Ambiance
  • Cursor -> DMZ-White
  • Icons -> Ubuntu-mono-dark

That’s it. To revert the changes, simply set those values back to Yaru in step 3.

In Howtos
 

Install The Latest Ruby 2.5.3 Easily via Snap in Ubuntu 18.04, 18.10

Last updated: November 7, 2018

Ruby, interpreted object-oriented scripting language, now can be installed easily in Ubuntu 16.04 and higher via Snap package.

The official Ruby snap, containerised software package, was finally released for Linux Desktop. While Ruby is always old in Ubuntu universe repositories, Ruby snap is always updated!

How to Install Ruby Snap in Ubuntu:

1. (Only required for Ubuntu 16.04) Open terminal (Ctrl+Alt+T) and run command to make sure snapd daemon is installed:

sudo apt install snapd snapd-xdg-open

Type user password (no asterisks feedback) when it prompts and hit Enter to continue.

2. For Ubuntu 18.04 and higher, directly install the Ruby snap from Ubuntu Software:

or install it via command (also works in Ubuntu 16.04):

snap install ruby --classic

3. Once installed successfully, check via command /snap/bin/ruby --version:

That’s it!

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FFMPEG 4.1 Released with AV1 Support in MP4

Last updated: November 6, 2018

FFmpeg multimedia libraries released version 4.1 today with a lot of new filters, codec decoders, and more.

FFMPEG 4.1 release highlights according to the changelog:

  • support for AV1 in MP4
  • support mbedTLS based TLS
  • AV1 parser
  • SER demuxer
  • ATRAC9 decoder, ilbc decoder, IMM4 video decoder
  • AVS2 video decoder via libdavs2
  • Brooktree ProSumer video decoder
  • MatchWare Screen Capture Codec decoder
  • WinCam Motion Video decoder
  • RemotelyAnywhere Screen Capture decoder
  • AVS2 video encoder via libxavs2
  • pcm vidc decoder and encoder
  • decoding S12M timecode in h264
  • deblock filter, tmix filter, amplify filter, fftdnoiz filter
  • aderivative and aintegral audio filters
  • pal75bars and pal100bars video filter sources
  • adeclick filter, adeclip filter
  • libtensorflow backend for DNN based filters like srcnn
  • vc1 decoder is now bit-exact
  • lensfun wrapper filter, colorconstancy filter, 1D LUT filter (lut1d), cue and acue filters
  • transpose_npp filter, amultiply filter, acrossover filter
  • Block-Matching 3d (bm3d) denoising filter
  • audio denoiser as afftdn filter
  • sinc audio filter source, chromahold filter, setparams filter, vibrance filter
  • xstack filter, (a)graphmonitor filter, yadif_cuda filter

Download FFMPEG 4.1:

There’s no PPA package or Snap at the moment to make installing FFmpeg 4.0 easy in Ubuntu.

Download the source tarball:

In News
 

How to Install MyPaint in Ubuntu 18.10 Cosmic

Last updated: January 29, 2019

Due to conflict between their dependencies, digital painter MyPaint can’t be installed if GIMP is already exist in Ubuntu 18.10.

In Ubuntu 18.10 universe repository, the GIMP package requires libmypaint-common library for mypaint brush, that conflicts with mypaint-data package required by MyPaint digital painting software.

For those who need both GIMP and MyPaint, install GIMP from otto06217’s PPA will solve the dependency conflict.

1. Open terminal (Ctrl+Alt+T) and run command to add the PPA:

sudo add-apt-repository ppa:otto-kesselgulasch/gimp

Type your user password (no asterisks feedback) for sudo prompts and hit Enter to continue.

2. Then either upgrade GIMP via Software Updater:

Or run command in terminal to install GIMP from the PPA:

sudo apt install gimp libmypaint

3. Finally install MyPaint via command:

sudo apt install mypaint mypaint-data

That’s it. Enjoy!

In Howtos ,
 

How to Install CopyQ Clipboard Manager 3.7.0 in Ubuntu

Last updated: November 4, 2018

CopyQ clipboard manager 3.7.0 was released a few hours ago with enhancements and many bug-fixes. Here’s how to install it in Ubuntu 18.04, Ubuntu 16.04, Ubuntu 18.10.

CopyQ 3.7.0 release highlights:

  • New option to show notes beside item content
  • Removed option to show icon instead of notes
  • Only plain text is Copied/Pasted from menu if Shift key is pressed
  • Customizable shortcut for Item context menu
  • Remove unmaintained Data plugin (can be replaced with a script)
  • Allow to set icon to tab groups in tree view
  • Allow export even if a tab group or an unloaded tab is selected
  • Automatic commands are no longer run in clipboard monitor context
  • Omit aborting monitor by calling abort() from automatic commands
  • Omit aborting automatic commands by changing configuration
  • Updated icons (Font Awesome 5.4.2)
  • Various bug-fixes
  • X11: Faster and safer clipboard checking and synchronization
  • X11: Prioritize checking clipboard before selection

Install Copyq 3.7.0 in Ubuntu:

The official PPA repository has made the latest packages for all current Ubuntu releases and their derivatives.

1. To add the PPA, open terminal (Ctrl+Alt+T) from application launcher and run command:

sudo add-apt-repository ppa:hluk/copyq

Input your password (no asterisks feedback while typing) when it prompts and hit Enter to continue.

2. After added the PPA repository, install CopyQ either via Synaptic package manager or by running commands in terminal:

sudo apt-get update

sudo apt-get install copyq

Once installed, start the clipboard manager from application launcher and you’ll see the icon in system tray area.

Uninstall:

To remove the software, either use Synaptic package manager or run command:

sudo apt-get remove --autoremove copyq

To remove PPA repositories, launch Software & Updates and navigate to Other Software tab.

In Howtos, News
 

How to Install Cinelerra CV, GG in Ubuntu 18.04

Last updated: November 3, 2018

Cinelerra is one of the best video editing software for Linux desktop. This tutorial shows you how to install Cinelerra-CV and Cinelerra-GG in Ubuntu 18.04.

Cinelerra has three branches, Official HV, CV from community, and GG which is CV + ‘Good Guy’ patches etc. See what’s difference between Cinelerra branches.

Install Cinelerra GG in Ubuntu 18.04:

Cinelerra GG has an official apt repository, though it does not work properly in my case.

You can grab the .deb package directly from the repository page:

Then install the package via Gdebi package installer (install Gdebi from Ubuntu Software)

(Optional) To remove the package, run command:

sudo apt-get remove --autoremove cin

Install Cinelerra CV in Ubuntu 18.04

For all current Ubuntu releases, there’s an official PPA for the latest CV package.

1. Open terminal (Ctrl+Alt+T) and run command to add the PPA:

sudo add-apt-repository ppa:cinelerra-ppa/ppa

Type your password (no asterisks feedback) when it prompts and hit enter to continue.

2. Then install the video editor via command:

sudo apt-get install cinelerra-cv

(Optional) To remove the package, run command:

sudo apt-get remove --autoremove cinelerra-cv

And go to Software & Updates -> Other Software tab to remove the PPA.

In Howtos , ,
 

[Quick Tip] Slack App Not Launching in Ubuntu 18.10

Last updated: November 2, 2018

For Ubuntu 18.10, the current Slack desktop 3.3.3 does not launch due to outdated libnode.so library. It outputs Segmentation fault (core dumped) when trying to launch from terminal.

Before the software developer team rebuild or update Slack for Linux, here’s a workaround to make Slack work in Ubuntu 18.10.

1. Open terminal either via Ctrl+Alt+T keyboard shortcut or from application launcher. When it opens, run command:

sudo updatedb && locate libnode

The command lists all available libnode.so library in your system.

2. In my case (see the previous picture), I have /usr/share/atom-beta/libnode.so other than the one shipped by Slack.

Run command to make a backup of libnode.so privided by Slack:

sudo mv /usr/lib/slack/libnode.so /usr/lib/slack/libnode.so.old

Then replace the library with another one:

sudo ln -s /usr/share/atom-beta/libnode.so /usr/lib/slack/libnode.so

NOTE IN THE LAST COMMAND replace /usr/share/atom-beta/libnode.so depends on the outputs in step 1.

That’s it. Enjoy!

via: stackoverflow.com

In Howtos ,
 

Install Pandora Client ‘Pithos’ 1.4.1 in Ubuntu 18.04 via PPA

Last updated: November 1, 2018

Other than universal Linux Flatpak package, the latest Pithos Pandora Client 1.4.1 now is available as native .deb package via PPA repository for Ubuntu 18.04 LTS.

Pithos is a native Pandora Radio client for Linux, which is much more lightweight than the Pandora.com web client, and integrates with desktop features such as media keys, notifications, and the sound menu.

1. Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for ‘terminal’ from app launcher. When it opens, run command:

sudo add-apt-repository ppa:jonathonf/pithos

Type your user password when it prompts and hit Enter to continue.

2. Then install Pithos 1.4.1 in Ubuntu 18.04 via command:

sudo apt install pithos

For those don’t want to add the PPA, grab the .deb package from PPA package page.

Uninstall:

To remove the software, simply run command in terminal:

sudo apt remove --autoremove pithos

To remove the PPA repository, go to Software & Updates -> Other Software.

In Howtos ,
 

How to Install Speed Dreams in Ubuntu 18.04, 18.10

Last updated: July 13, 2019

Speed Dreams, open source motorsport simulation and racing game, now can be installed in Ubuntu 18.04, Ubuntu 18.10, and also Ubuntu 16.04 easily via Flatpak package.

Speed Dreams is a fork of the open racing car simulator Torcs, aiming to implement exciting new features, cars, tracks and AI opponents to make a more enjoyable game for the player, as well as constantly improving visual and physics realism.

The official Speed Dreams PPA was abandoned for years. Thanks to Flatpak (containerized software package), now you can install the game in Ubuntu via following steps.

1. Open terminal (Ctrl+Alt+T), run command to install Flatpak framework if not exist (For Ubuntu 16.04, add the PPA first):

sudo apt-get install flatpak

2. Then add the flathub repository:

flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

3. Finally install Speed Dreams:

flatpak install flathub org.speed_dreams.SpeedDreams

Once successfully installed, open the game from application launcher and enjoy!

Uninstall:

To remove the Flatpak package, simply run command in terminal:

flatpak uninstall org.speed_dreams.SpeedDreams
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PPSSPP PSP emulator 1.7 Released with Stability and Bugfixes

Last updated: October 29, 2018

PPSSPP Sony PSP emulator 1.7 was released a few days ago with a large number of compatibility and bugfixes. Here’s how to install it in Ubuntu 18.04, Ubuntu 18.10, Ubuntu 16.04, and Ubuntu 14.04.

PPSSPP 1.7 release highlights:

  • Fix for insta-crash on Galaxy Note 9, some Xiaomi devices, and the new nVidia Shield
  • Vertex range culling on most platforms, fixes DTM: Race Driver and similar
  • Major speed boost in some Gundam and Earth Defense Force games
  • Fix for issues with post processing shaders in GL 3+
  • Fixes to sound output switching on Windows (WASAPI)
  • Detects DirectInput devices when running
  • Simple Discord integration
  • New debugging APIs
  • Task switching made a lot more robust (fixes GPD XD problems)
  • Texture decoding optimizations
  • Tons and tons of miscellaneous bugfixes and compatibility fixes

How to Install PPSSPP 1.7 in Ubuntu:

Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for ‘terminal’ from software launcher. When it opens, do following steps one by one to install PPSSPP in all current Ubuntu releases.

1. Copy and paste the command and hit run to add the PPA:

sudo add-apt-repository ppa:ppsspp/stable

Type your user password (no asterisks feedback) when it prompts and hit Enter to continue.

2. Then refresh system package cache and install the latest PPSSPP via commands:

sudo apt-get update

sudo apt-get install ppsspp

Replace ppsspp with ppsspp-sdl in the code for the SDL version.

Uninstall:

To remove the PPA, either go to Software & Updates -> Other Software or run command:

sudo add-apt-repository --remove ppa:ppsspp/stable

To remove PPSSPP, either use your system package manager or run command:

sudo apt-get remove --autoremove ppsspp ppsspp-sdl ppsspp-common
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