This quick tutorial shows beginners how to list and edit all startup applications or services in the Startup Applications utility in Ubuntu 18.04 and higher.
In the default Ubuntu Gnome desktop, there’s a Startup Applications utility allows to add, remove, or edit system startup applications or services.
While most startup apps or services are hidden, it shows only a few applications or even is empty.
1. To display all hidden startup applications or services, simply open terminal (Ctrl+Alt+T) and run command:
sudo sed -i 's/NoDisplay=true/NoDisplay=false/g' /etc/xdg/autostart/*.desktop
Type user password when it prompts and hit Enter.
Then restart the utility and you’ll see a large list of applications. You MUST be careful as changing them may break your desktop.
2. And to hide them again, simply run command in terminal:
sudo sed -i 's/NoDisplay=false/NoDisplay=true/g' /etc/xdg/autostart/*.desktop
Add Razer headphone devices support for Razer Chroma
And various other changes.
How to Install Vivaldi 2.6 in Ubuntu:
The official Ubuntu .DEB packages are available for download at the link below:
Grab the deb matches your OS, then install it via Ubuntu Software or Gdebi package manager. Or run command in terminal:
sudo dpkg -i ~/Downloads/vivaldi-stable_2.6*.deb
Vivaldi also has apt repository, with it you can install the browser and get future updates through Software Updater utility.
Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for terminal from application menu. When it opens, run following commands one by one:
Pick is a simple open-source color picker application for Ubuntu Linux. It supports history by remembering last colors where you got them from.
Pick lets you pick colours from anywhere on your screen. Choose the colour you want and Pick remembers it, names it, and shows you a screenshot so you can remember where you got it from.
Zoom all the way in to pixels to pick just the right one. Show your colours in your choice of format: rgba() or hex, CSS or Gdk or Qt, whichever you prefer. Copy to the clipboard ready for pasting into code or graphics apps.
For Ubuntu 18.04 and higher, you can easily install the tool from Ubuntu Software as it has been made as snap package.
For Ubuntu 16.04, open terminal (Ctrl+Alt+T) and install snapd first:
sudo apt-get install snapd
Then install the Pick color picker via command:
sudo snap install pick-colour-picker
Once installed, launch the tool from application menu and enjoy.
Qmmp, Qt based audio player, released version 1.3.3 with improvements and bug fixes. Here’s how to install it in Ubuntu 16.04, Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04.
Leafpad text editor now is available to install via Snap package for Ubuntu 18.04, Ubuntu 19.04, and higher.
Leafpad is a simple GTK+ based text editor aims to be lighter than Gedit and KWrite. It has been removed from Ubuntu repositories since Ubuntu 19.04.
Leafpad snap package maintained by Ken VanDine makes it again easy to install in Ubuntu 19.04 and higher.
Simply open Ubuntu Software utility, search for ‘leafpad’ and you’ll see the snap package. For Ubuntu 19.04 and higher, there’s no native Leafpad Ubuntu package any more.
Or open terminal (Ctrl+Alt+T) and run command to install the snap package:
snap install leafpad --classic
Like normal software package, you can either open Leafpad from files’ context menu ‘Open With’ menu, or launch it from application menu.
Four new tone-mapping operators: ferwerda, kimkautz, lischinski and vanhateren.
Speed up for hdr creation
Added post processing gamma and saturation.
Great speedup and better memory usage for all tonemapping operators
Preview of created HDR in HDR Wizard
Other small improvements and bug-fixes as usual.
How to Install Luminance HDR 2.6.0 in Ubuntu 18.04, 19.04
There’s an unofficial PPA contains the latest Luminance HDR packages for Ubuntu 18.04, Ubuntu 18.10, Ubuntu 19.04.
Open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for “Terminal” from application menu. When it opens, run following commands one by one:
1. Run command to add the PPA repository:
sudo add-apt-repository ppa:dhor/myway
Type user password (no visual feedback due to security reason) when it prompts and hit Enter to continue.
2. If you have a previous release installed, launch Software Updater (Update Manager) and upgrade the software:
Or run following command to install (or upgrade) Luminance HDR:
sudo apt install luminance-hdr
How to Uninstall:
The PPA repository can be removed by going to System Settings -> Software & Updates -> Other Software tab.
To remove the software, either use your system package manager or run command: