Posting code to your blog

For those interested in posting code to their blog this link is a pure treat http://www.craftyfella.com/2010/01/syntax-highlighting-with-blogger-engine.html

Installing opencv in Ubuntu 12.04

sudo apt-get install libopencv-dev libcv-dev

then compile using

g++ `pkg-config --cflags opencv` codename.cpp `pkg-config --libs opencv` -o codename

if you get a highhui error replace

# include <highgui>

with

#include "opencv2/highgui/highgui.hpp"

Visual studio 2012 and windows 7 compatability issues

Upon installing visual studio 2012 in windows 7 you may notice that it gives compatibility warning on running visual studio. It fix is plain simple. Just go to the following link and download and install the patch. And get cracking :D
http://www.microsoft.com/en-pk/download/confirmation.aspx?id=36020

Purple screen on windows start when dual booting with ubuntu

Recently i installed Ubuntu alongside windows 7 on my Dell 15R 5537. Initially everything worked fine but after some update perhaps; windows stopped working. On selecting windows from the boot menu, it would show a purple screen, however i could hear windows boot and its start screen. Googled for days but did not find an exact solution. Here is what I did

First try doing this
On the grub menu highlight the windows menu item using the keyboard and then press 'e' to the end of the line that begins with "set root= *******" add 'quiet splash' so that it becomes
"set root= ******* quiet splash"
now press ctrl + x
Does it solve the problem? If it did now you proceed to make the change permanent

Start ubuntu
press ctrl + alt + t to open up terminal
type 'sudo gedit'
in the editor navigate to /boot/grub/grub.cfg and open the file
In the file select the menu entry for windows and copy it
Now open the file /etc/grub.d/40_custom
Paste the menu entry that you copied previously after the comments on a new line
In the menu entry add the "quiet splash" as done before
Save the file
Now run
sudo update-grub
Reboot, enjoy!

Root HTC Wildfire S

Wasted a day of my life trying out links that never worked. This link was a life saver http://forum.xda-developers.com/showthread.php?t=1702542

Missing power option in Ubuntu 12.04

There is a feature/bug in Ubuntu 12.04 that does not let you choose actions on critical battery. I finally found a solution to the problem

gsettings set org.gnome.settings-daemon.plugins.power critical-battery-action 'nothing'

As it turns out the option can be set if you use the non-GUI method. For those who wish that the laptop suspends instead of hibernate (defult action). You should use

gsettings set org.gnome.settings-daemon.plugins.power critical-battery-action 'suspend'

NOTE: sudo is not required

How to make a bootable Windows USB under any LINUX version

There are a lots of softwares available for making bootable and live USB's but they all fail at one distro or another. So here is a magic bullet that fits all. All you need is a bootable OR live distro's iso image file. If you have a live distro you'd get a live USB, if you only have bootable iso image you would get a bootable USB only. First locate your USB

sudo fdisk -l

Then run this, replace path-to-iso with the path to where the iso file is on your disk and the ? with drive letter for your USB

dd if=/path-to-iso of=/dev/sd?
sync

Dont forget the sync command at the end to flush the usb-cache. Example

dd if=/home/me/ubu.iso of=/dev/sdc
sync

Note: Do not include the numeric number e.g. its /dev/sdc and NOT /dev/sdc1!