Playing UT2004 in your desired Resolution

Well, that's more of a "Note for self" than anything else, so I'll leave it short and simple.

setres 1366x768x32

[Ubuntu] How to fix dependency problems

This is not a very generic method to solve dependency hells but in many obvious cases this is a very good one. It solved one of my problems with some components of "MySQL" being replaced / removed by some mysterious force. I'll pick the scenario here and try to draw a picture on the approach. The solution is based on the askUbuntu answer here [ http://askubuntu.com/questions/227978/problem-after-mysql-server-installation-i-cant-install-any-thing-in-ubuntu-12-04/228450#228450 ]

The problem: I was trying to access a web app that I was working on inside my 'localhost', but for some reason the mysql components were not functioning properly.
The server configuration: Apache2, PHP5, MySQL. The server was setup using 'Automatic virtual hosting' method.
The packages used were installed using:

apt-get install ia32-libs-multiarch build-essential ncurses-term g++ mc lfm unrar firefox apache2 apache2-doc apache2-suexec git zsh vim aria2 awesome curl chromium-browser mpd ncmpcpp git conky pcregrep unagi mysql-server libapache2-mod-auth-mysql php5-mysql php5 php-pear php5-sqlite php5-curl php5-imap php5-intl php5-mysql phpmyadmin openssh-server php5-mcrypt 

It's the full string from my server setup script, you can see the apache, php and mysql packages being used in the list.
How did I find the cause: I tried the package installation script again and it threw these errors

The following packages have unmet dependencies:
 mysql-server : Depends: mysql-server-5.5 but it is not going to be installed
 php5-curl : Depends: php5-common (= 5.4.9-4ubuntu2) but 5.4.9-4ubuntu2.1 is to be installed
 php5-mysql : Depends: php5-common (= 5.4.9-4ubuntu2) but 5.4.9-4ubuntu2.1 is to be installed
E: Unable to correct problems, you have held broken packages.

Then I Googled the first line (mysql) and found the askUbuntu answer page.
This indicated the cause to be a recent addition of and external repo into my repo list.
How did I fix the problem : I first removed repos that were added by me from Synaptic > Other softwares. [ Open Synaptic and then untick repos from "Other software" tab
First I executed the commands

sudo apt-get -f remove mysql-server-core-5.5 mysql-server-5.5 mysql-server-5.5 mysql-server
sudo apt-get -f remove php5-curl
sudo apt-get -f remove php5-common

Then executed the installation commands again and the problem was fixed.

Studying a bit of Data Mining

I've recently found it useful to know some data mining techniques that supposedly might increase productivity in development field.
This is where I've decided to start and these are some of the links that I'm going to use in order to kick start the process of learning.

URLs :
1. A small cheat sheet on data mining
2. I don't if I need it or not, came at the first shot of the Googling session and seemed useful
3. Couldn't resist keeping this in the queue

Books :
1. Programming Collective Intelligence
2. Artificial Intelligence: A Modern Approach
3. Data Mining: Practical Machine Learning Tools and Techniques, Third Edition
4. Data Mining: Concepts and Techniques, Second Edition

[Linux][Mint][13][Lisa] Fix screen going blank when Laptop lid is closed

In my workplace they have Linux Mint 13 setup for the machines. I personally hate it and my employer too, so we will be shifting to some other Distro very soon, but in the mean time I had to make do with it. We have an extra display attached to every laptop. One of the things that bugs me the most is the "Power management" doesn't have any "Do nothing" option. And if you somehow (yes, there's a way) make it appear, it does the exact same thing as "Blank screen", so yeah, "Aw snap!!". It didn't take much of googling to find Mint forum page that solved the problem though [ http://forum.linuxmint.com/viewtopic.php?t=106532&f=208 ]
Basically the problem is caused by a faulty assumption in design. It always executes and Screen Blank instruction set, when you close the laptop lid. What you have to do is just comment out one line in the event handler script.
1. First open the file, you might need root rights to edit this, so use sudo if you need

/etc/acpi/lid.sh

2. The find the line

. /usr/share/acpi-support/screenblank

3. Comment that line out with

#

It should be fixed immediately.

Linux WiFi card installation instructions collection

One way or the other I face problems with new installation of Linux distros and setting up WiFi on them. So, I'm creating a collection here for future reference. Might help somebody someday too. 1. BCM4311 [ http://askubuntu.com/questions/55868/how-to-install-a-broadcom-wireless-driver ]

Mounting MTP (Android) in Linux

Got this from : http://blog.mpshouse.com/?p=609 This is another one : http://forum.xda-developers.com/showthread.php?t=2055563

HOWTO: Linux and MTP

---

This is a quick how to get MTP working on Linux, the guide is for distro's based on Debian (mint\debian\ubuntu) OpenSuse, Fedora AND Gentoo. If there's any missing for major distro's let me know, or add them to a separate post and i'll put them up here


***Debian based distros**

Code:

sudo apt-get install mtpfs
sudo mkdir /media/onex
sudo chmod 775 /media/onex
sudo mtpfs -o allow_other /media/onex
gedit /etc/udev/rules.d/51-android.rules
and add the following line:
SUBSYSTEM=="usb", SYSFS{idVendor}=="0bb4", MODE="0666"
and then:
sudo service udev restart

***Arch Linux***

Code:

pacman -S libmtp

After installation, you have several mtp tools available. Upon connecting your MTP device, you use:

mtp-detect

and add the following line:
SUBSYSTEM=="usb", SYSFS{idVendor}=="0bb4", MODE="0666"
and then reload udev rules:
udevadm control --reload

Arch Linux guide is from the ArchLinux wiki

**Redhat\Fedora16**
First of all, I using my computer with other people, who can come over the network, so the 0666 mode bits not a right choice for me. I make it all on a fedora 16, but the distro is really not important.

So the steps:
- add a user to the "disk" group (or whatever You want)
- make a mount point (the media doesn't work for me, across the init removes the content)
- add this mount point to the fstab, with some parameter
- create udevd rules
- restart udevd
- install fuse-mtpfs
- (re)login user
- try it

My common experience is that, the mtpfs is very very very very slow. Really slow, so I can use it only with CLI, any GUI has been coming back with time out

And the "code":

Code:

usermod -a -G disk $LOGINUSER

Code:

sudo mkdir /mnt/sgs2 ; sudo chgrp disk /mnt/sgs2; sudo chmod 0770 /mnt/sgs2

Code:

sudo echo "mtpfs /mnt/sgs2 fuse users,noauto 0 0" >> /etc/fstab

Code:

cat > /etc/udev/rules.d/51-android.rules <<EOF
SUBSYSTEM!="usb_device", GOTO="label_end"
ACTION!="add", GOTO="label_end"

# ATRRS{idVendor}== ertekei:
#Acer 0502
SUBSYSTEM=="usb",ATTRS{idVendor}=="0502",MODE="0660",GROUP="disk"
#ASUS 0b05
SUBSYSTEM=="usb",ATTRS{idVendor}=="0b05",MODE="0660",GROUP="disk"
#Dell 413c
SUBSYSTEM=="usb",ATTRS{idVendor}=="413c",MODE="0660",GROUP="disk"
#Foxconn 0489
SUBSYSTEM=="usb",ATTRS{idVendor}=="0489",MODE="0660",GROUP="disk"
#Fujitsu 04c5
SUBSYSTEM=="usb",ATTRS{idVendor}=="04c5",MODE="0660",GROUP="disk"
#Fujitsu Toshiba 04c5
SUBSYSTEM=="usb",ATTRS{idVendor}=="04c5",MODE="0660",GROUP="disk"
#Garmin-Asus 091e
SUBSYSTEM=="usb",ATTRS{idVendor}=="091e",MODE="0660",GROUP="disk"
#Google 18d1
SUBSYSTEM=="usb",ATTRS{idVendor}=="18d1",ATTRS{idProduct}=="4ee1",MODE="0660",GROUP="disk"
#Hisense 109b
SUBSYSTEM=="usb",ATTRS{idVendor}=="109b",MODE="0660",GROUP="disk"
#HTC 0bb4
SUBSYSTEM=="usb",ATTRS{idVendor}=="0bb4",MODE="0660",GROUP="disk"
#Huawei 12d1
SUBSYSTEM=="usb",ATTRS{idVendor}=="12d1",MODE="0660",GROUP="disk"
#K-Touch 24e3
SUBSYSTEM=="usb",ATTRS{idVendor}=="24e3",MODE="0660",GROUP="disk"
#KT Tech 2116
SUBSYSTEM=="usb",ATTRS{idVendor}=="2116",MODE="0660",GROUP="disk"
#Kyocera 0482
SUBSYSTEM=="usb",ATTRS{idVendor}=="0482",MODE="0660",GROUP="disk"
#Lenovo 17ef
SUBSYSTEM=="usb",ATTRS{idVendor}=="17ef",MODE="0660",GROUP="disk"
#LG 1004
SUBSYSTEM=="usb",ATTRS{idVendor}=="1004",MODE="0660",GROUP="disk"
#Motorola 22b8
SUBSYSTEM=="usb",ATTRS{idVendor}=="22b8",MODE="0660",GROUP="disk"
#NEC 0409
SUBSYSTEM=="usb",ATTRS{idVendor}=="0409",MODE="0660",GROUP="disk"
#Nook 2080
SUBSYSTEM=="usb",ATTRS{idVendor}=="2080",MODE="0660",GROUP="disk"
#Nvidia 0955
SUBSYSTEM=="usb",ATTRS{idVendor}=="0955",MODE="0660",GROUP="disk"
#OTGV 2257
SUBSYSTEM=="usb",ATTRS{idVendor}=="2257",MODE="0660",GROUP="disk"
#Pantech 10a9
SUBSYSTEM=="usb",ATTRS{idVendor}=="10a9",MODE="0660",GROUP="disk"
#Pegatron 1d4d
SUBSYSTEM=="usb",ATTRS{idVendor}=="1d4d",MODE="0660",GROUP="disk"
#Philips 0471
SUBSYSTEM=="usb",ATTRS{idVendor}=="0471",MODE="0660",GROUP="disk"
#PMC-Sierra 04da
SUBSYSTEM=="usb",ATTRS{idVendor}=="04da",MODE="0660",GROUP="disk"
#Qualcomm 05c6
SUBSYSTEM=="usb",ATTRS{idVendor}=="05c6",MODE="0660",GROUP="disk"
#SK Telesys 1f53
SUBSYSTEM=="usb",ATTRS{idVendor}=="1f53",MODE="0660",GROUP="disk"
#Samsung 04e8
SUBSYSTEM=="usb",ATTRS{idVendor}=="04e8",ATTRS{idProduct}=="6860",MODE="0660",GROUP="disk"
#Sharp 04dd
SUBSYSTEM=="usb",ATTRS{idVendor}=="04dd",MODE="0660",GROUP="disk"
#Sony 054c
SUBSYSTEM=="usb",ATTRS{idVendor}=="054c",MODE="0660",GROUP="disk"
#Sony Ericsson 0fce
SUBSYSTEM=="usb",ATTRS{idVendor}=="0fce",MODE="0660",GROUP="disk"
#Teleepoch 2340
SUBSYSTEM=="usb",ATTRS{idVendor}=="2340",MODE="0660",GROUP="disk"
#Toshiba 0930
SUBSYSTEM=="usb",ATTRS{idVendor}=="0930",MODE="0660",GROUP="disk"
#ZTE 19d2
SUBSYSTEM=="usb",ATTRS{idVendor}=="19d2",MODE="0660",GROUP="disk"

LABEL="label_end"

Code:

udevadm control --reload-rules

Code:

yum/apt-get/pacman/etc install mtpfs

Logout-login, for get in to the disk group, connect the device via usb, and try

Code:

mptfs

without any parameter, and it must write out some information:
[CODE]$LOGINUSER@mir:~$ mtpfs
Listing raw device(s)
Device 0 (VID=04e8 and PID=6860) is a Samsung Galaxy models (MTP).
Found 1 device(s):
Samsung: Galaxy models (MTP) (04e8:6860) @ bus 2, dev 4
Attempting to connect device
Android device detected, assigning default bug flags
Listing File Information on Device with name: (NULL)
fuse: missing mountpoint parameter

And finally mount /it must be working now with user account/:

Code:

mount /mnt/sgs2

or dismount:

Code:

umount /mnt/sgs2

**OpenSuse 12.2**

this method will work for music and photos access only,

Code:

sudo zypper addrepo -f http://packman.inode.at/suse/12.2/ packman
sudo zypper ref (type a to always accept the packman repo)
sudo zypper in mtpfs
sudo vim /lib/udev/rules.d/69-libmtp.rules and add the following line (replace vim with gedit if you want a gui editor)
# HTC One X+
ATTR{idVendor}=="0bb4", ATTR{idProduct}=="0dfc", SYMLINK+="libmtp-%k", ENV{ID_MTP_DEVICE}="1", ENV{ID_MEDIA_PLAYER}="1"

sudo cp /lib/udev/rules.d/69-libmtp.rules /etc/udev/rules.d/.
reboot

When you plug in the phone you will see android phone icon on the desktop click on it to browse your files.

*note
disable any media players from trying to read the device...

** Gentoo **

Code:

Prerequisites

If your device is not recognized by libmtp, try upgrading to latest (or even git) version.
User needs to be in group plugdev to mount device.
MTPFS

You need to add option: user_allow_other in /etc/fuse.conf
$ mkdir ~/AndroidDevice
$ mtpfs -o allow_other ~/AndroidDevice
NOTE: this can take really long time, up to several minutes. As an indication of successful mount the mtpfs will go to background.
To unmount:
$ /usr/bin/fusermount -u ~/AndroidDevice

If mtpfs doesn't work for you try updating to latest version first.
Go-MTPFS

Seems to be more stable
$ emerge -a go
$ mkdir ~/go
$ export GOPATH=/home/$USER/go
$ go get github.com/hanwen/go-mtpfs

To mount:
$ ~/go/bin/go-mtpfs ~/AndroidDevice

To unmount:
$ /usr/bin/fusermount -u ~/AndroidDevice
Troubleshooting

Sometimes (e.g. on HTC One X) USB debugging automatically turns on when device is connected to PC. You need to turn debugging off, otherwise libmtp can't recognise device.
Make sure your Android device is not going to sleep and the screen is not getting locked. Set screen timeout to very long values, or enable in Development section flag "Do not turn off the screen".

Thanks to ihavoc and Fonya1 for the opensuse and redhat\fedora tutorials

Writing good code

Here I'm listing out some principles that I've picked up so far after writing code and getting them reviewed by some peers or other sites etc.
1. No repeatation
2. Try to make it as readable as possible, like try to make it look like plain English as much as possible.



Here are some links to help on that case:
1. [ http://net.tutsplus.com/tutorials/html-css-techniques/top-15-best-practices-for-writing-super-readable-code/ ]