Monitor DPI/PPI DPI or PPI is a measure of how many pixels are there per inch. High PPI means that more pixels are packed in the same amount of space. The “sharpness” of a display depends on the PPI and not just the resolution. For example 2 monitors with the same Full HD resolution may… Read More »
Now a days computer monitors are available in huge variety of size, resolution and other features. Specifications vary widely across different monitors and each one is designed for very specific needs. Whether you’re a casual user, gamer, or professional, it’s important to know about the different monitor technologies and features to choose the best one… Read More »
Auto-mount partitions On Linux systems like Ubuntu or Kubuntu all partitions other than the root partitions are usually not mounted at startup. Clicking on the partition inside a file manager mounts them and open the content for viewing. However sometimes it is desirable that the partition mounts automatically at startup, so that some application can… Read More »
Dpkg Dpkg (Debian Package) is a package management system in Debian and debian based linux distributions like Ubuntu. Dpkg is actually a low level command line utility to manage packages. It is different from tools like apt-get and gdebi. Apt-get and Gdebi are more advanced tools that can resolve dependencies and install them so that… Read More »
Open Ports Ports are opened on a system by various background services like http server, database server, smtp server etc. If you are running a webserver and launch any such service then it will open a port so that other systems on the internet or local network can connect to it. After you start a… Read More »
CPU temperature Ever noticed your cpu fan making a lot more noise than usual ? It does so when the temperature of the processor gets high due to high processing. Sometimes, the processor may heat up so much that the system would start lowering the processor clock speed and would show up such a message:… Read More »
Ngspice Ngspice is the most popular free circuit simulator. Its available for most platforms including Linux. Whether you are an engineer or just want to play with electronics as a hobby, Ngspice can be a useful tool to simulate circuits and analyse their behavior before actually building them in the lab. This quick tutorial shows… Read More »
Spam free email with SpamAssassin If you are running your own mailbox on a server using Postfix and Dovecot then it is imperative to install an anti-spam software to protect your mailbox from getting bombed with incoming spam mails. And for this SpamAssassin is one of the best solutions available out there. It is quite… Read More »
Intel HD Graphics 630 Graphics Performance Recently I upgraded to a Intel i5-7400 processor which has inbuilt graphics processing capabilities. This processor comes with integrated graphics processor called HD Graphics 630. Details about the processor and its graphics processor can be found here – https://ark.intel.com/products/97147/Intel-Core-i5-7400-Processor-6M-Cache-up-to-3_50-GHz The graphics unit is compatible with DirectX and OpenGL. So… Read More »
Hp Deskjet 1112 In a previous post we talked about the you can buy. In this post however we shall learn about installing the device driver for the HP Deskjet 1112 printer. The HP Deskjet 1112 is a simple color printer. It has no scanner or copier function but can print pretty well and is… Read More »
Dante Socks5 Server Dante is a socks5 server that you can use to setup a socks5 proxy on your ubuntu or debian machine. In this quick tutorial we shall learn how to setup dante and use authentication. With authentication enabled, the dante proxy server would require all clients to provide login details in order to… Read More »
Running desktop on remote server Usually you would use the ssh terminal when working on a remote linux server. But there can be times when you need to run a gui app on the server and keep it running for quite some time. Recently I had to do something similar and therefore I setup an… Read More »
GPU temperature Nvidia graphics card has its own processor that gets heated just like the main cpu processor. They usually have a heat sink and the high power gpus also have a fan. Its a good idea to monitor the gpu temperature on your system from time to time to ensure that the unit is… Read More »
1. Configure DNS servers Use the Google DNS or OpenDNS servers instead of your isp dns servers. It can make your internet a bit more smooth. Configure the network connection and setup Google DNS servers or OpenDNS servers 8.8.8.8, 8.8.4.4 208.67.222.222 · 208.67.220.220 Either one should be fine. I prefer using Google DNS servers. 2…. Read More »
Install Nvidia drivers Installing Nvidia drivers, like always, can be a little bit tricky. I installed the ones from the default repository, but they did not work and the system went into a blank screen. 1. Check and find out your graphics card model The first thing to do is find out your gpu chipset,… Read More »
Show Desktop widget Kubuntu has been my favorite distro ever since I made the move from Windows to Linux. KDE feels very stable and a swift desktop environment. However KDE has its own set of problems. Ever since the introduction of Plasma 5, everytime I would upgrade Kubuntu, something very essential would break somewhere. And… Read More »
Install Oracle Java 8 Ubuntu has OpenJDK installed by default, but in certain cases you might need to install Oracle Java instead. It is possible to install Oracle Java manually, however the process is a bit lengthy and requires a lot of steps. Oracle Java can be downloaded from the official website over here -… Read More »
Socks proxy via ssh Tunnel I often come across websites that block me because my isp is on some blacklist somewhere. The only option then is to access the website through some kind of proxy server, which are quite hard to find. The best solution for me was to use my own linux servers as… Read More »
Ubuntu live usb boot error I just created a bootable Ubuntu usb drive using Unetbootin, and found that it does not boot properly. On bootup it shows the following error. SYSLINUX 6.03 EDD 20150813 Copyright (C) 1994-2012 H. Peter Anvin et al Boot Error The problem is with the way, the iso is written to… Read More »
Sub domains on localhost When working with apache locally, the common way to use it is though the “http://localhost” url. When doing web development or some kind of testing, you might need to create sub domains on localhost, just like on online servers. This post shows you how to create sub domains inside Apache on… Read More »