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In the past, if you need to mount an ISO file in Ubuntu, you will have to use an external tool or via the command line. In the recent version of Ubuntu, you can easily mount an ISO directly from Nautilus file manager. Here is how you can do it:
1. Open Files (also known as Nautilus) and navigate to the folder that contains the ISO file.
Your ISO will magically mounted in Files and you will be able to view the content within.
Damien
Damien Oh started writing tech articles since 2007 and has over 10 years of experience in the tech industry. He is proficient in Windows, Linux, Mac, Android and iOS, and worked as a part time WordPress Developer. He is currently the owner and Editor-in-Chief of Make Tech Easier.
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How To Easily Kill An Unresponsive Application In Ubuntu
Using the System Monitor1. Open the System Monitor app. In the Processes tab, scroll down the list until you find the unresponsive app.
Once confirmed, this will kill the unresponsive application.
Using a keyboard shortcutYou can assign a custom keyboard shortcut to kill an application when it becomes unresponsive.
That’s it.
Damien
Damien Oh started writing tech articles since 2007 and has over 10 years of experience in the tech industry. He is proficient in Windows, Linux, Mac, Android and iOS, and worked as a part time WordPress Developer. He is currently the owner and Editor-in-Chief of Make Tech Easier.
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Learn How To Install Smplayer In Ubuntu
SMPlayer is a free media player for windows and Linux with built-in codecs, which will additionally play YouTube videos, search and down load subtitles, and entails other points like a thumbnail generator and audio and video filters.
Features
Help for Youtube. That you can search, play and down-load Youtube movies
Many video and audio filters are available
Thumbnail generator
Video equaliser
It has many Skins/Themes
It supports a couple of speed playback
It supports audio and subtitles delay adjustment
Installing SMPlayerTo install SMPlayer, add the following PPA on Ubuntu−
$sudo add-apt-repository ppa:rvm/smplayerThe sample output should be like this −
Packages for SMPlayer. To install SMPlayer from this PPA, run these commands on a terminal: sudo add-apt-repository ppa:rvm/smplayer sudo apt-get update sudo apt-get install smplayer smtube smplayer-themes smplayer-skins Press [ENTER] to continue or ctrl-c to cancel adding it gpg: keyring `/tmp/tmpeab9bvoh/secring.gpg' created gpg: keyring `/tmp/tmpeab9bvoh/pubring.gpg' created gpg: chúng tôi trustdb created gpg: key E4A4F4F4: public key "Launchpad PPA named smplayer for rvm" imported gpg: no ultimately trusted keys found gpg: Total number processed: 1 gpg: imported: 1 (RSA: 1) OKNow update the packages by using the following command −
$sudo apt-get update .................................................................................................To install SMplayer with skins, use the following command −
$ sudo apt-get install smplayer smplayer-themes smplayer-skinsThe sample output should be like this −
Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: esound-common libaudiofile1 libdirectfb-1.2-9 libenca0 libesd0 libgif7 libqt4-opengl libqtwebkit4 libsdl1.2debian libvorbisidec1 mplayer smtube Suggested packages: The following NEW packages will be installed: esound-common libaudiofile1 libdirectfb-1.2-9 libenca0 libesd0 libgif7 libqt4-opengl libqtwebkit4 libsdl1.2debian libvorbisidec1 mplayer smplayer smplayer-skins smplayer-themes smtube 0 upgraded, 15 newly installed, 0 to remove and 284 not upgraded. Need to get 18.9 MB of archives. After this operation, 66.8 MB of additional disk space will be used. Do you want to continue? [Y/n] y .................................................................................To open SMplayer, use the following command −
$ smplayer Usage: smplayer [-minigui] [-defaultgui] [-mpcgui] [-config-path directory] [-send-action action_name] [-actions action_list] [-close-at-end] [-no-close-at-end] [-fullscreen] [-no-fullscreen] [-ontop] [-no-ontop] [-sub subtitle_file] [-pos x y] [-size width height] [-add-to-playlist] -minigui: opens the mini gui instead of the default one. -mpcgui: opens the mpc gui. -defaultgui: opens the default gui. -skingui: opens the gui with support for skins. -config-path: specifies the directory where smplayer will store its configuration files (smplayer.ini, smplayer_files.ini...) -send-action: tries to make a connection to another running instance and send to it the specified action. Example: -send-action pause The rest of options (if any) will be ignored and the application will exit. It will return 0 on success or -1 on failure. -actions: action_list is a list of actions separated by spaces. The actions will be executed just after loading the file (if any) in the same order you entered. For checkable actions you can pass true or false as parameter. Example: -actions "fullscreen compact true". Quotes are necessary in case you pass more than one action. -close-at-end: the main window will be closed when the file/playlist finishes. -no-close-at-end: the main window won't be closed when the file/playlist finishes. -fullscreen: the video will be played in fullscreen mode. -no-fullscreen: the video will be played in window mode. -ontop: sets the stay on top option to always. -no-ontop: sets the stay on top option to never. -sub: specifies the subtitle file to be loaded for the first video. -media-title: sets the media title for the first video. -pos: specifies the coordinates where the main window will be displayed. -size: specifies the size of the main window. -help: will show this message and then will exit. -add-to-playlist: if there's another instance running, the media will be added to that instance's playlist. If there's no other instance, this option will be ignored and the files will be opened in a new instance. media: 'media' is any kind of file that SMPlayer can open. It can be a local file, a DVD (e.g. dvd://1), an Internet stream (e.g. mms://....) or a local playlist in format m3u or pls.After this article, you will be able to understand how to install SMPlayer in Ubuntu. In our next articles, we will come up with more Linux based tricks and tips. Keep reading!
Source: SMPlayer Portal
How To Reduce Noise In Images Using Photoshop
In this post, we will explain how to reduce noise in images to fix grainy images using Photoshop. You will also learn how to avoid getting noise in photos. Image noise is any discoloration of an image that degrades its quality. We consider any annoying sound as noise because it takes away from peace and beauty. Every noise is a sound but not every sound is noise. The same is true for digital noise, digital noise is colors that are out of place and takes away from the beauty of the image. Digital noise in images is colors that make the image look pixelated and sometimes slightly blurry.
How to reduce Noise in Images using PhotoshopImage noise can be caused by using cheap equipment to take photographs. Image noise can be caused by using high ISO while taking photographs in low light. ISO refers to the camera’s sensitivity to light. The higher the ISO the brighter the photo will appear. The image may have noise because the camera may have a slow shutter speed. Noise can be caused by underexposure. Noise can also be caused by a scanning sensor. Noise can be even more obvious when the image is sharpened, that is why it is best to reduce the noise before enhancing the image. While some noise is good in an image, having too much noise can make the image have poor quality. Once the image has noise, it cannot be removed without damaging the image, however, you can reduce image noise with Photoshop.
Types of Noise
Prepare Image
Reduce Noise – Basic Mode
Reduce Noise – Advanced Mode
Save
1] Types of NoiseThere are two types of noise that an image may have, Color Noise and Luminance Noise. Color noise appears as spots of red, green, and blue color where they are not supposed to be. Luminance (grayscale) noise, makes an image look grainy or patchy. Luminance noise affects the brightness of pixels, but it doesn’t harm their original colors. There is one more thing that can affect your image that Photoshop can help to correct, and that is JPEG Artifacts. JPEG Artifacts are blocky distortions or halos in the image caused by saving with a low JPEG quality setting. JPEG is a compression format, so it compresses your image when you use it. Each time you save a JPEG image it loses some of its quality. Your device may save your file as a JPEG, or you created the JPEG when you saved the file. Since JPEG is a smaller file, it is used in most cases to save images, however JPEG damages and degrades the file.
2] Preparing the ImageThis is the original image. Zoom in and out and observe. You don’t have to zoom in a lot to start seeing distortions in the image.
I observed some JPEG Artifacts especially around the edges, closer to the skin. can you see the boxy colors?
3] Reduce Noise – Basic ModeTo begin working on the image you need to duplicate the image and make changes to the duplicate so that the original is protected.
With the copy layer selected go to Filter then Noise then Reduce Noise. The Reduce Noise filter dialogue box will come up for you to make adjustments. Stay in the basic mode, which is the first mode that the Reduce Filter will be on. Note there will be no hard and fast rule in the value that will be needed for each. This means you will need to move the sliders slowly and observe the changes to your image. The image used in this article will have a different level of noise and JPEG artifact present in it.
Here are the different parts of the Reduce Noise filter dialogue box and what they are for:
There is the Ok and the Cancel button so that you can confirm or cancel changes.
While still in the Reduce Filter dialogue, zoom the previewed image to 100% so that you can see the noise. The Reduce Noise filter will be in the Basic Mode.
These are the controls that are available in the Basic Mode.
Go to each of the sliders and adjusts them and watch the changes in the image.
Preserve Details – The Preserve Details slider is used to bring back as many of the details of the image. The Strength slider would have removed some of the image’s original details so the Preserve details would help to bring back as many of the details as possible. Remember that it will not be possible to get a perfect image, however, try to make the image as realistic as possible.
Reduce Color Noise – This Slider removes color noise in the image. Use this slider if you notice color noise in your image.
Remove JPEG Artifacts – You may notice in your image that there are JPEG Artifacts. JPEG Artifacts are blocky distortions or halos in the image caused by saving with a low JPEG quality setting. Check the Remove JPEG Artifact option and see the blotches disappear.
4] Reduce Noise – Advanced ModeTo begin working on the image you need to duplicate the image and make changes to the duplicate so that the original is protected.
With the copy layer selected go to Filter then Noise then Reduce Noise. The Reduce Noise filter dialogue box will come up for you to make adjustments.
For this method, go over to the Advanced mode instead of staying on the Basic mode.
When you are finished processing press OK to confirm and keep changes made to the image.
This is the image after the process of Noise Reduction has been completed and has been saved.
5] SaveAfter all that hard work making that image look more pleasing to the eye, it would be very counter-productive to not save that image properly. The first thing to do is to save the finished image as a Photoshop PSD so that you preserve the editing capabilities and the quality. Save the image as TIFF or PNG so that more of the details are stored. Saving as a PGN also have the added benefit of saving without the background. Remember that saving as JPEG will compress it and some quality will be lost. However for storage and web use, you may have to save it as a JPEG, just be sure to use the highest JPEG setting to save the Image. Note that saving as a JPEG should be left to the final save because each time a JPEG is saved it degrades more and more.
Read: How to improve Image Quality in Photoshop CS6
How do I reduce raw noise in Photoshop?Open an image in Camera Raw that has a digital noise issue, press Z to get the Zoom tool, and zoom in to at least 100%–200%, so the noise is easily visible.
To decrease color noise, drag the Noise Reduction Color slider to the right. Take note of the changes and stop when the image looks satisfactory.
How do you remove noise from a picture in Photoshop? How can I capture photos with no noise?
Shoot in Raw.
Get the correct exposure.
Keep the ISO under control.
Be careful when taking long exposures.
Use large apertures.
Turn on your camera noise reduction.
Use cameras with full-frame sensors.
Why are my photos so noisy?The graininess you’re referring to is called noise, and it’s caused by having your ISO set too high. While it seems nice that your camera offers you a high ISO, it doesn’t mean it can be used at the highest setting and produce a quality image. ISO refers to the camera’s sensitivity to light. The Higher the ISO number, the more sensitive. This comes with a drawback because the more sensitive the more chance for there to be noise. Your photos can be noisy when you turn the ISO high and shoot in low light.
Photos can also be noisy when you use cheap equipment to take photos. Using the correct equipment and proper lighting can greatly reduce noise in your photos. However. If all that is not available, Photoshop can help to reduce noise in your photos.
How To Install And Update Google Chrome In Ubuntu
Most users who want to install Google Chrome in Ubuntu tend to use an App Store or go through Ubuntu Software. What they don’t know is that Google Chrome isn’t available in any major Linux distribution archives, so it can’t be installed directly from the Software Center. Here we show you how to install Google Chrome in Ubuntu.
Download and Install Google ChromeSince Google Chrome is not found in the Software Center, we need to download the installer from its website.
Select the package for your Linux platform. This may be the 64-bit .deb (for Debian/Ubuntu), 64-bit .rpm (for Fedora/openSUSE), or, if you don’t use either of those, you can get a community-supported version.
Note: if you are using Arch Linux, Google Chrome is found in the AUR. You can install it with any of these AUR helpers.
If this didn’t work for you, try a direct download of Google Chrome for Linux.
If prompted, enter your password.
Wait until the Software Installer installs the Chrome browser.
Customize your options.
Enjoy the Google Chrome browser on Ubuntu.
Install Chrome Using Flatpak LibraryIf you prefer a more direct method of obtaining Chrome, try using Flatpak. Chrome browser is available on Flathub; however, Google doesn’t support or manage the application on the platform, so you will be installing the package at your own risk. (You can learn how to install Flatpak on Ubuntu and other distributions.)
Open the Terminal and type the following command:
flatpakinstall
flathub com.google.ChromePress Y , then Enter.
Let the Terminal download packages and install the browser.
Chrome will be installed successfully on Linux PC.
Open the menu and search for the browser.
There are a few ways to update Google Chrome on your Ubuntu machine. By default, on a regular update, the system will update Google Chrome, too. But if it fails to update on its own, you can use any of the following methods to manually update Google Chrome on your machine.
Use Software Center
Search and open “Software Center” from the menu.
Note: if your Ubuntu Software center is not working, we have fixes here.
Use Command Line
Open a terminal.
Run the sudo apt update command in the Terminal.
Type sudo apt --only-upgrade install google-chrome-stable command to upgrade Google Chrome only.
Use Software Updater
Open “Software Updater” from the menu.
Select “Other Software” from the top menu.
Check the box beside the APT Line of the Google repository and close the window.
The Software Updater will notify you of new software updates when they are available for your computer.
Tip: not keen on using Ubuntu? Check out other Debian-based Linux distributions here.
Frequently Asked Questions Is there a Google Chrome package for 32-bit Ubuntu?No, Google axed the Chrome 32-bit version in 2023.
Is Flatpak Google Chrome safe?While Flatpak is an open-source project, the Chrome package on the platform isn’t monitored or managed by Google. You have to install it at your own risk.
Do I need to add the Google Chrome repository separately?The Chrome DEB or RPM package has the repository info and saves it in the computer after installation. You don’t have to register the repository separately.
Do I have to update the Flatpak packages separately?Flatpak updates appear along with the system updates. You don’t have to add the Flathub repository or download additional tools to receive or update the applications. Use the universal command sudo apt update and install Flatpak app updates.
All screenshots by Krishna Kumar Silvery.
Krishna Kumar
I’m a passionate writer.
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How To Boot To Recovery Mode (Safe Mode) In Ubuntu
Sometimes things go wrong, even on Linux systems, and you need a way to get your computer back to full functionality. On Windows, Safe Mode is usually the first choice to get back in and fix a problem. However, on Linux, there really isn’t a direct counterpart.
On most Linux distributions i, the solution involves using a Live CD to access files on your hard drive or even using a chroot. Ubuntu has come up with a clever solution in recovery mode. It lets you perform several key recovery tasks, including booting into a root terminal to give you full access to fix your computer.
Note: this will only work on Ubuntu, Mint, and other Ubuntu-related distributions.
Boot to Recovery Mode in UbuntuAs you’re booting your computer, wait for the manufacturer logo to flash from the BIOS. If your computer boots too quickly, you’re going to need to do this immediately after powering it on. Quickly press either the Shift or Escape key. On newer computers, it’s probably Escape. The timing has to be near perfect on some computers, so you may have to press it repeatedly. If you miss the window, reboot and try again.
GRUB will take you to a new menu. Toward the bottom you’ll see one of the entries with “Recovery” listed in parentheses.
You’ll arrive on a simple screen with a blue background and a box containing a series of recovery options. This is the main recovery menu for Ubuntu; it allows you to do many of the common tasks required to fix a broken system.
Understanding Recovery OptionsAs you can tell, you now have seven options to help recover Ubuntu. Depending on the issue you’re facing, you’ll want to choose the right one for your needs.
Each option does the following:
The Root TerminalMany problems can only be solved as root, and they require more manual intervention than what the default options in the recovery menu provide. When it looks like you’re dealing with one of these cases, select “Drop to root shell prompt” to boot into a root terminal.
As soon as you select it, you’ll see the bottom of your screen switch to a terminal and log in as root. Before you can do much, you’re going to need to remount the root partition of your drive. By default, it’s mounted read-only for safety purposes, but you’ll probably need to modify something to fix whatever issue’s going on. To remount it with write permissions, run the following command.
mount
-o
remount,rw/
If you have additional partitions you need to work on, you’ll need to remount them as well. That includes when your “/home” directory is on a separate partition. You can remount them all at once simply with:
mount
-a
Now you’re ready to dig around in your system and resolve the problem that’s preventing you from booting normally. You’ll have access to everything on your system as root, so be careful not to damage anything in the process. Making backups, even just copies of the files you modify, is a great idea. Once you’ve uncovered and remedied the problem, reboot your system and boot normally.
Can’t Access GRUB Boot MenuIf for any reason you can’t access Ubuntu’s GRUB boot menu, you won’t be able to boot into recovery mode in Ubuntu. This usually means the bootloader and/or your Ubuntu system has been corrupted somehow. The easiest solution is to reinstall Ubuntu using a Live CD. There are a variety of reasons to have a Live CD on hand, and this is just one of them.
This method allows you to usually keep your files (as long as the hard drive isn’t corrupted beyond use). Plus, you’ll be able to repair whatever is going on with a fresh installation.
In most cases, booting into recovery mode in Ubuntu should be your first step for troubleshooting many issues you encounter. And, hopefully, you won’t need to reinstall Ubuntu at all.
Crystal Crowder
Crystal Crowder has spent over 15 years working in the tech industry, first as an IT technician and then as a writer. She works to help teach others how to get the most from their devices, systems, and apps. She stays on top of the latest trends and is always finding solutions to common tech problems.
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