Symptom: Opening a new tab in Firefox and going to maps.google.com sometimes results in Firefox crashing. Firefox version: 42.0 OS: Linux Mint 17.2 Graphics card: AMD Radeon 7870 Graphics Driver: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1 (AMD/ATI display driver wrapper) Other symptoms: Sometimes small sections of text in Firefox are unreadable (blotched) until scrolling it off and back on… Read More »
After making several modifications to your test site, what’s the best way to transfer those changes to your live site? This post explains how to use Rsync over SSH to keep your test website synchronized to your live site. Rsync saves time and is more efficient than using FTP to upload files one at a… Read More »
It’s convenient to have a local web server where you can test changes to your website before uploading them to your live site, but how do you get your local web development files to the virtual web server? FTP or SSH? Constantly transferring files from the local host machine to the virtual server can take… Read More »
Symptom: Ubuntu Server edition generates incorrect timestamps. For example, when issuing the date command or using the date() function in PHP. Cause: The server isn’t properly synchronized to an NTP (Network Time Protocol) server. Solution: Install an NTP time server sudo apt-get install ntp Troubleshooting Steps: Installed NTP server with sudo apt-get install ntp Tried… Read More »
Symptom: Nexus 4 battery drains very quickly after a full charge. Cause: Uncertain. Solution: See toubleshooting steps. Troubleshooting Steps: Checked battery usage. No particular app using too much power. Bluetooth disabled Screen brightness set to automatic. Under WIFI -> Advanced Disabled “scanning always available” Disabled “keep WIFI on during sleep” Uninstalled unused applications
Symptom: After selecting “Suspend” from the session dialog, the computer goes to sleep and wakes up on its own a few seconds later. Cause: Probably cause it network adapter hardware, driver or firmware. Solution: Uncertain. Troubleshooting Steps: Unplugged USB mouse, keyboard and network cable Restarted PC Checked system log -> does not indicate what woke… Read More »
In this post, you will learn how to use HTML and jQuery AJAX to update the rows of a MySQL database table. For this example, the HTML table will have a total of five columns. The first four will contain data pulled from a MySQL database. The cells will be editable so that the user… Read More »
Do you have an HTML table that you’d like to import into a MySQL database? This post will explain how to do it. The process involves creating a new database (unless you already have one), creating a new table, and importing the table using an HTML DOM parser script. Create a New Database Log in… Read More »
In this post, you will learn how to setup a local git repository in Linux and upload it to your Github account. Github is like a social networking site for computer programmers. You can share your code with the world so that anyone can view it, copy it, and improve upon it. Create your Github… Read More »
Is your program crashing due to a segmentation fault or some other error? Not sure why? Use gdb (GNU debugger) to pointpoint the section of code that’s causing problems. gdb comes installed by default on most linux installations. In order for gdb to work, the program must be compiled with debugging flags. For example: nasm… Read More »