Ply mouth, Install Compiz fusion for Ubuntu

Ply mouth spalsh screen is the initial splash screen we see on bootup. Different Plymouth themes can be found by searching for plymouth-theme in a Package Manager. If you like to change it first install it. Then follw the below steps:

sudo update-alternatives --config default.plymouth

sudo update-initramfs -u

Then after this select the theme which ever you want to use.Plymouth does not reliably work with nVidia drivers and during bootup a blank screen may result for several seconds.

Metacity

Metacity is the default desktop compositing manager in Gnome. It is lightweight, streamlined and does not have many configurable options, but has multiple themes available at Gnome Look. 

Compiz Cube

 

Compiz Fusion

Compiz Fusion is available as a separate Windows Manager, to allow advanced desktop effects such as the rotating cube desktop. So many users want to install it into their Ubuntu as it runs faster there. To install it use the below commands in the terminal:

sudo apt-get install compiz compizconfig-settings-manager compiz-fusion-plugins-main compiz-fusion-plugins-extra emerald librsvg2-common

In order to change the Compiz fusion as the window manager do this:

Select Compiz Configuration:

Menu -> System -> Preferences -> CompizConfig Settings Manager

You will need to log out and then log in back to let the effects change.

Fusion Icon

Fusion icon is a tray icon that will allow you to switch between the window manager, decorators e.t.c. This also gives you quick access to Compiz fusion settings manager. To install it use the follwing commands:

sudo apt-get install fusion-icon

To use the Compiz cube you will have to use four desktop environments. If you use only two desktop environments tehn you will get only a plate but not a cube. But you will still be able to rotate the plate. Set the CompizConfig Settings Manager to enable the "Desktop Cube" and "Rotate Cube" and "Viewport Switcher" options. Click on the icon for each to customize settings. Hold down the Ctrl+Alt+Left mouse button and drag the mouse (or touchpad) the direction you want to rotate the cube.

When running Compiz fusion as the Windows Manager, you must change the default number of desktops from within CompizConfig Settings Manger. To set the 4 desktop environments do the follwing:

CompizConfig Settings Manager -> General -> General Options -> Desktop Size -> Horizontal Virtual Size -> 4

Now the Cube will be assigned to one of the desktops and if you rotate it you can change to another desktop environment or check what is happening in that particular desktop environment. You can change the themes of the Compiz cube by installing the Emerald theme engine to Compiz.The Emerald Theme Manager for Compiz Fusion can be installed in this way through the terminal:

sudo apt-get install emerald

gDesklets

gDesklets are similar to Windows widgets and gadgets and provides the information such as weather, system resources, and news primarily for the Gnome desktop. To install it type:

sudo apt-get install gdesklets

Install Ubuntu along with Mac OS

So many people using Mac books may also like to install Ubuntu along with their Mac OS. Here are the steps to do it. Mac OS X has a similar structure to Linux (it is BSD Unix based). Dual-booting Mac OS X and Ubuntu detailed instructions can be found here.

Installing Mac OS X after Ubuntu 

• If you decide to dual boot with OS X, choose ext2 as your partition type during the Ubuntu installation. (For this the Super Grub Disk CD is a useful utility. You can download the Super Grub .iso image file at forjamari.linex.org and burn the image to a CD-ROM.) 

• Once you have installed Ubuntu, edit the Grub start-up list:

sudo nano /boot/grub/menu.lst

and add the following lines:

title Mac OS X

root (hd0,0)

makeactive

chainloader +1

Reboot your Mac and go to the terminal in Max OS X (if you have any issues booting, boot from your Mac OS X DVD). Press F8 and enter -s. Enter:

fdisk -e /dev/rdisk0

flag 2 <--note that flag 2 is my Mac partition number two

quit

y

reboot

• If are still unsure whether it is working correctly, use the Super Grub Disk CD and make grub active.

Installing Ubuntu after Mac OS X

• If you get an error message during boot such as HFS+error in the bootloader, you can also use the Super Grub Disk for recovering Linux GRUB and the Windows MBR (Master Boot Record).

• Once you have installed Ubuntu, edit the Grub start-up list:

sudo nano /boot/grub/menu.lst

and add the following lines:

title Mac OS X

root (hd0,0)

makeactive

chainloader +1

If you have issues with Mac OSX or Windows in GRUB, try changing the Mac OS X Grub entry change root (hd0,0) to root (hd0,1)

This means you will boot into partition number 1. You can try any partition number until you get it right.

Installing Ubuntu after Mac OS X

• If you get an error message during boot such as HFS+error in the bootloader, you can also use the Super Grub Disk for recovering Linux GRUB and the Windows MBR (Master Boot Record).

• Once you have installed Ubuntu, edit the Grub start-up list:

sudo nano /boot/grub/menu.lst

and add the following lines:

title Mac OS X

root (hd0,0)

makeactive

chainloader +1

If you have issues with Mac OSX or Windows in GRUB, try changing the Mac OS X Grub entry change root (hd0,0) to root (hd0,1)

This means you will boot into partition number 1. You can try any partition number until you get it right.

Animated GIF images replacing Videos

From recent years we have been using videos. But now it is apast thing and the latest technique is using GIF(Graphical interchange format) images instead of videos. You may be getting a doubt that how can GIF image replace a video? We can do this in this way. First we have to install some stuff to do this :

sudo apt-get install imagemagick mplayer gtk-recordmydesktop

Then record any video from your desktop or from any where. By entering the above command we will get some stuff from internet, they are image magick, Mplayer, desktop recorder. Then use the desktop recorder to capture a screen cast and save the video file. And then use OGV video, Mplayer to capture the JPEG screen shots and then save the output file. Then enter the below command in the terminal :

mplayer -ao null <video file name> -vo jpeg:outdir=output

Then after this use image magick to convert the output file to animated GIF image by using the below command :

convert output/* output.gif

Then if you want to optimize the output we got then use the below command in the terminal :

convert output.gif -fuzz 10% -layers Optimize optimised.gif

The fuzz factor can be used between 3% to 10% to reduce the image size to a great level.

Or also you can use the below command instead of the above command :

gifsicle -O in.gif -o out.gif

If you want to reduce the size further more decrease the fuzz factor to 3% like this :

convert output.gif -fuzz 3% -layers Optimize finalgif.gif

And then use the below command in the terminal :

ffmpeg -i Untitled_Screencast.webm -loop_output 0 -r 5 -s 320x200 -pix_fmt rgb24 out.gif

And then use the below command in the terminal :

convert output.gif -fuzz 8% -layers Optimize finalgif.gif

That's all you have the animated gif image where there is no need to start it like a video and so we can watch the video like an image file in real time.

Here is an example of of GIF image try it for your own videos you will surely love it.

 

Mac book's task bar in Ubuntu

   Want to have a Mac book like task bar in your Ubuntu operating system. Then try the Cairo dock which works very fine in Ubuntu. Enter the below commands in the terminal to get the Cairo Dock.

    sudo add-apt-repository ppa:cairo-dock-team/ppa
    sudo apt-get update
    sudo apt-get install cairo-dock cairo-dock-plug-ins

You can see the Cairo Dock applet in the above image.
And below screen shows you the menu of Cairo dock. You can enter the Menu by right clicking on the Cairo dock and then by selecting Configure. You can change the preferences of Cairo dock in the menu.

Cairo dock also has some effects like sparkles, penguin etc. You can select and change these effects from the menu shown below.

In the above video you can see the sparkling effect which is one of the coolest effect in Cairo dock and along with a penguin. You can change the whole appearance of the Cairo dock very easily without any confusion. Enjoy the Cairo dock in your Ubuntu operating system.

Control start and stop limits of charging a battery in Ubuntu

So many of us think that start and stop of a charging  is impossible to control in any Operating system.
But now we can control the start and stop of charging a battery in Ubuntu. Let us see how to do it.
Run these commands in your terminal to install tp-smapi in your OS.

sudo apt-get install tp-smapi-dkms sudo modprobe tp_smapi

Then write your desired charging thresholds( your own values) to the virtual files in /sys/devices/platform/smapi`:

echo 10 | sudo tee /sys/devices/platform/smapi/BAT0/start_charge_thresh
echo 100 | sudo tee /sys/devices/platform/smapi/BAT0/stop_charge_thresh

In the above commands you can change the values 10 and 100 to any value. The first one will help you to choose at what level charging must start and the second value will let you choose at what level charging must stop.
In this way we can control the charging up of a battery.
GOOD LUCK!

Add infinity conky to Ubuntu through the Terminal

Many Ubuntu users may have got bored of ordinary theme in Ubuntu. Now we can add conky to our Ubuntu to get a new look to it.

To install Conky in Ubuntu/Linux Mint open the terminal and copy the following commands in the Terminal:

    sudo apt-get install conky conky-all

First you have to download Startup script with following commands through Terminal :

    cd && wget -O .start-conky http://goo.gl/6RrEw
    chmod +x .start-conky

Now open Startup Applications and click Add. Then a new Dialog box will open click on Browse. Now press Ctrl+H

• Infinity Conky for Ethernet

To Install Infinity-Conky open Terminal and enter following commands:

    cd && wget -O infinity-noobslab-eth1.zip http://goo.gl/ZiFbd
    unzip infinity-noobslab-eth1.zip && rm infinity-noobslab-eth1.zip

• Infinity Conky for Wifi

To Install Infinity-Conky open Terminal and enter following commands:

    cd && wget -O infinity-noobslab-wlan1.zip http://goo.gl/qkIWg
    unzip infinity-noobslab-wlan1.zip && rm infinity-noobslab-wlan1.zip

If gadget doesn't fit in your screen, then you can change size(minimum_size). Enter Following command to open file in text editor and change size:

    nano ~/.conkyrc

Remap the keys in any key board in Ubuntu

All the Ubuntu users may be thinking of changing the function of the keys in their key boards. Now we can change the functions of the keys and make them function as we want them to. Lets know how to do it? First of all we need to now the function of a particular which we want to change. Now as we know the function of the keys we can proceed on to the concept of changing their functions. First go to the terminal in Ubuntu. Then type the command xev the Terminal and press Enter. Then we will get the terminal like this as shown below:

Here this command tracks the key strokes with which we can change their functions. Now after entering the command we got a window. Now what we need to do is just press the keys which we want to remap. Now for example I want to re-map the PAGE UP key with PAGE DOWN. First we have to press the PAGE UP key. Then we will get the output in the terminal like this as shown below

Pressing Up produces keycode 111, assigned to action Up.

KeyPress event, serial 34, synthetic NO, window 0x3a00001,
root 0xa5, subw 0x0, time 13739005, (165,-16), root(170,32),
state 0x0, keycode 111 (keysym 0xff52, Up), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False

Here note the key code we obtained in the above output as

keycode 111 (keysym 0xff52, Up)

Pressing Down produces the kyecode 116, which is assigned to the action Down.

KeyPress event, serial 31, synthetic NO, window 0x3a00001,
root 0xa5, subw 0x0, time 13735531, (165,-16), root(170,32),
state 0x0, keycode 116 (keysym 0xff54, Down), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False

Here note the key code we obtained in the above output as

keycode 116 (keysym 0xff54, Down)

Type this command in the terminal to change the function of the prescribed key.

xmodmap -e "keycode 111 = Down

In the above command Key code 111 is the code of the PAGE UP key and as we are placing the term as DOWN in the above command the function of the PAGE UP key changes to DOWN.

The input in the command is given like this. We have got the two outputs by pressing the two keys. And we have to observe these lines in the output obtained

state 0x0, keycode 111 (keysym 0xff52, Up), same_screen YES,

and

state 0x0, keycode 116 (keysym 0xff54, Down), same_screen YES,

Key code 111 is for UP and Key code is for DOWN. So now we changed the keycode of UP to DOWN.

Like this we can change the function of other keys also by observing the keycodes and their designations in the lines in the output as shown in the above line in BOLD phase. To get these changes for every session, after issuing the commands above, create a file called .Xmodmap (or any thing), with the following command:

xmodmap -pke > .Xmodmap

Then, create a file called .xinitrc in your home directory, containing just the following line:

xmodmap .Xmodmap

That's all you can use that key to do the function of another key.

How to use microsoft office on Ubuntu?

Want to use microsoft office on Ubuntu
Try PlayOnLinux

The following tutorial works in Ubuntu
Download PlayOnLinux using the commands:

    wget -q "http://deb.playonlinux.com/public.gpg" -O- | sudo apt-key add -
    sudo wget http://deb.playonlinux.com/playonlinux_precise.list -O    
    /etc/apt/sources.list.d/playonlinux.list
    sudo apt-get update
    sudo apt-get install playonlinux

    Click **Install**.
















Search for the Microsoft Office version you want to install (in our case, it's **MS Office 2010**).

Click **Install**.

















Click **Next**.

















Choose **Other**. I'll assume that you have your MS Office 2010 CD.

Insert your CD and type `/media/cdrom` in the blank space. Replace `cdrom` with the name of the CD. Then click next and MS Office 2010 will be installed!

Although you can install MS Office, I recommend using LibreOffice (which is installed by default).  It's a free Office Suite that is compatible with all your office files.


 

How to test your scientific Calculator?

 Test whether all the keys are perfectly working in your scientific calculator or not like this:

Press all the keys along:
SHIFT+7(CONSTANT)+ON

Cleaning in Ubuntu and Linux Versions

So many Ubuntu users may be facing a lot of performance issues. This might be due to the cached files and also may be because of not doing maintenance of the PC. You can try installing bleachbit from the command-line if installing in the Software Center is not working like this:
Open a Terminal window (press Ctrl+Alt+F2; or press Alt+F2, type gnome-terminal, and press Enter). Then run these two commands (type or paste them in and press Enter):

sudp apt-get update
sudo apt-get install bleachbit

Improve Power Usage / Battery Life In Linux With TLP

Overview

Use this to improve your battery performance and to maintain temperature. So here is how to install and configure TLP:

 sudo add-apt-repository ppa:linrunner/tlp
 sudo apt-get update
 sudo apt-get install tlp tlp-rdw smartmontools ethtool

ThinkPads

 sudo apt-get install tp-smapi-dkms acpi-call-tools tlp tlp-rdw smartmontools ethtool

tlp-rdw – Radio Device Wizard - Need to enable/disable & Power saving (Wifi / Bluetooth )

smartmontools - needed by tlp-stat to display disk drive S.M.A.R.T. data

ethtool - needed to disable wake on lan

tp-smapi-dkms ThinkPad only, tp-smapi is needed for battery charge thresholds and ThinkPad specific status output of tlp-stat

acpi-call-tools ThinkPad only, acpi-call is needed for battery charge thresholds on Sandy Bridge and newer models

---

Configuration

Removing default Ubuntu cpu frequency config

 sudo update-rc.d -f ondemand remove 

TLP Developer

( This is only needed if the user decides to change the default governor. If a user issues the command without changing the TLP setting too, he ends up with "perfomance", which is quite bad for battery life.), Apply to section 3.) Processor and Frequency Scaling

The main config file of TLP is at /etc/default/tlp

  sudo gedit /etc/default/tlp

---

Parameters

1. Parameters ending on _AC are effective with the power supply connected
2. Parameters ending on _BAT are effective when running on battery
3. Parameters containing blanks must be enclosed in double quotes like this: ""
4. Some parameters are inactive by default; remove the leading '#' to activate

---

0.) General

TLP_ENABLE=1

Set to 0 to disable TLP (Reboot needed), It should be enabled so leave the default value

1.) File System

     DISK_IDLE_SECS_ON_AC=0
     DISK_IDLE_SECS_ON_BAT=2 

DISK_IDLE_SECS_ON_BAT=2 = You can either leave the default value (2) or you can edit it as 5, By default Ubuntu uses 5, its up to you, read the gives below help

 cat /usr/lib/pm-utils/power.d/laptop-mode

This controls how agressive the system is at trying to avoid writing to disk. The longer the disk is idle, the more power you can save.

This is only active on battery power, and it restores these values to kernel defaults when on AC power.

Defaults 5, which enables laptop mode and forces the system to wait 5 seconds whenever something asks to write to disk to flush out as much data as we can.

2.) Dirty page values

 MAX_LOST_WORK_SECS_ON_AC=15
 MAX_LOST_WORK_SECS_ON_BAT=60 

Leave the default value

Defaults 60, which means that the kernel will not start forcing process to write out file information that has been changed but not saved until 60% of usable system memory is filled with dirty information.

3.) Processor and Frequency Scaling

 CPU_SCALING_GOVERNOR_ON_AC=ondemand
 CPU_SCALING_GOVERNOR_ON_BAT=powersave

Remove the hash and edit it as conservative.

Its up to you what you want, you can also use ON_BAT=powersave

Select a cpu frequency scaling governor: ondemand/powersave/performance/conservative

Governor ??

The governor decides what frequency should be used.

Module Description:

ondemand        Dynamically switch between CPU(s) available if at 95% cpu load

performance     Run the cpu at max frequency

conservative    Dynamically switch between CPU(s) available if at 75% load

powersave       Run the cpu at the minimum frequency

TLP Developer

To use "conservative" over "powersave – especially on AC – should not be a general recommendation but only an option for hardware that produces excessive heat or fan noise.

4.) Min/Max frequency

 #CPU_SCALING_MIN_FREQ_ON_AC=0
 #CPU_SCALING_MAX_FREQ_ON_AC=0
 #CPU_SCALING_MIN_FREQ_ON_BAT=0
 #CPU_SCALING_MAX_FREQ_ON_BAT=0

Set the min/max frequency available for the scaling governor. Possible values strongly depend on your cpu. For available frequencies see tlp-stat output, Section "+++ Processor".

Hint: Parameters are disabled by default, remove the leading # to enable them, otherwise kernel default values are used.

5.) Turbo Boost

 CPU_BOOST_ON_AC=1
 CPU_BOOST_ON_BAT=0

Set the cpu "turbo boost" feature: 0=disable / 1=allow ,Requires an Intel Core i processor and kernel 3.7 or later.

Important: This may conflict with your distribution's governor settings, A value of 1 does not activate boosting, it just allows it

6.) Cpu Cores/Hyper-Threads

 SCHED_POWERSAVE_ON_AC=0
 SCHED_POWERSAVE_ON_BAT=1

Minimize number of used cpu cores/hyper-threads under light load conditions

7.) Kernel

 NMI_WATCHDOG=0

Activate kernel NMI watchdog timer (0 = disabled/save power, 1=enabled). A value of 1 is relevant for kernel debugging only.

8.) Hard disk advanced power management level

 DISK_APM_LEVEL_ON_AC="254 254"
 DISK_APM_LEVEL_ON_BAT="128 128"

Set the "Advanced Power Management Level". Possible values range between 1 and 255:

1 – max power saving / minimum performance 

Important: this setting may lead to increased disk drive wear and tear because of excessive read-write head unloading (recognizable from the clicking noises)

128 – compromise between power saving and wear (TLP standard setting on battery)

192 – prevents excessive head unloading of some HDDs

254 – minimum power saving / max performance (TLP standard setting on ac)

255 – disable APM (not supported by some disk models)

Different values for multiple disks are separated with blanks.

9.) Disk I/O Scheduler

 #DISK_IOSCHED="cfq cfq"

Select io scheduler for the disk devices: noop/deadline/cfq (Default: cfq) Separate values for multiple devices with spaces.

noop is often the best choice for memory-backed block devices (e.g. ramdisks) and other non-rotational media (flash) where trying to reschedule I/O is a waste of resources

deadline is a lightweight scheduler which tries to put a hard limit on latency

cfq tries to maintain system-wide fairness of I/O bandwidth

10.) SATA aggressive link power management (ALPM):

min_power/medium_power/max_performance

 SATA_LINKPWR_ON_AC=max_performance
 SATA_LINKPWR_ON_BAT=min_power

ALPM Aggressive Link Power Management (ALPM) is a mechanism where a SATA AHCI controller can put the SATA link that connects to the disk into a very low power mode during periods of zero I/O activity and into an active power state when work needs to be done. Tests show that this can save around 0.5-1.5 Watts of power on a typical system. ( For more check " Sources and additional help " )

11.) PCI Express Active State Power Management (PCIe ASPM):

( default/performance/powersave )

Hint: needs kernel boot option pcie_aspm=force on some machines

 PCIE_ASPM_ON_AC=performance
 PCIE_ASPM_ON_BAT=powersave

12.) Radeon graphics clock speed

(profile method): low/mid/high/auto/default

auto = mid on BAT, high on AC; default = use hardware defaults (Kernel >= 2.6.35 only, not with fglrx driver!)

 #RADEON_POWER_PROFILE_ON_AC=high
 #RADEON_POWER_PROFILE_ON_BAT=low

13.) WiFi power saving mode

1=disable/5=enable

(Linux 2.6.32 and later, some adapters only!)

 WIFI_PWR_ON_AC=1
 WIFI_PWR_ON_BAT=5

14.) Disable wake on lan

Y = Yes , N = No

 WOL_DISABLE=Y

15.) Audio power saving for Intel HDA

Enable audio power saving for Intel HDA, AC97 devices (timeout in secs). A value of 0 disables / >=1 enables power save.

 SOUND_POWER_SAVE=1

Disable controller too (HDA only): Y/N

 SOUND_POWER_SAVE_CONTROLLER=Y

16.) Power off optical drive in UltraBay >> (ThinkPads only)

Set to 1 to power off optical drive in UltraBay (ThinkPads only), when running on battery. A value of 0 disables this Feature (Default). Drive can be powered on again by releasing (and reinserting) the eject lever or by pressing the disc eject button on newer models. Note: an UltraBay hard disk is never powered off.

  BAY_POWEROFF_ON_BAT=1

Optical drive device to power off (default sr0)

 BAY_DEVICE="sr0"

17.) Runtime Power Management for pci(e) bus devices

  RUNTIME_PM_ON_AC=on
  RUNTIME_PM_ON_BAT=auto

Runtime PM for all pci(e) bus devices

 RUNTIME_PM_ALL=1

Runtime PM for all pci(e) bus devices: 0=disable / 1=enable, Warning: experimental option, could cause system instabilities

Some times my usb mouse dongle didn't work when i plug it in usb 3 port, work fine when i plug it in usb 2 port, and all my usb 3 devices are working properly no issue.

18.) Usb autosuspend

Set to 0 to disable/1 to enable usb autosuspend feature

 USB_AUTOSUSPEND=1

19.) System Start and Shutdown

 RESTORE_DEVICE_STATE_ON_STARTUP=0

Restores radio device state (builtin bluetooth, wifi, wwan) from previous shutdown on system startup:

0 – disable, 1 – enable

 DEVICES_TO_DISABLE_ON_STARTUP="bluetooth wifi wwan" 

Disables builtin radio devices upon system start:

bluetooth
wifi – Wireless LAN
wwan – Wireless Wide Area Network (UMTS)

Multiple devices are separated with blanks.

I have an error that my Blue tooth device is not Disabled on start up, so if you face this problem just do the following config

 sudo nano /etc/rc.local 

And add the following line before exit 0

 rfkill block bluetooth

Save & Exit & Reboot

---

Working with TLP

After installation TLP will be automatically activated upon system start.

To start it immediately without reboot or to apply changed settings use:

  sudo tlp start

Use the tlp-stat terminal command to check if TLP is working properly

 sudo tlp-stat

Check You system temperature

 sudo tlp-stat -t

Show battery information only:

 sudo tlp-stat -b
 sudo tlp-stat --battery 

Show configuration only:

tlp-stat -c
tlp-stat --config

Show radio devices switch state only:

tlp-stat -r
tlp-stat --rfkill

Show temperatures and fan speed only:

tlp-stat -t 

Apply Battery Settings (ignoring the actual power source):

sudo tlp bat

Apply AC Settings (ignoring the actual power source):

sudo tlp ac

You can check Which I/O you are using.

 sudo tlp-stat  # Check the section +++ Storage Devices

---

Trace Mode

To examine suspected problems in TLP more closely, activate trace mode in /etc/default/tlp:

 TLP_DEBUG="lock nm path pm rf run sysfs udev usb" 

Add above mentioned line in the end /etc/default/tlp , The accumulated trace data may be read at any time with

 tlp-stat -T 

Or

 grep "tlp" /var/log/debug 

In case the trace output is missing, you have to modify your rsyslogd configuration. Create the file/etc/rsyslog.d/90-debug.conf containing

 *.=debug;\
 auth,authpriv.none;\
 news.none;mail.none -/var/log/debug

And restart the daemon

 sudo /etc/init.d/rsyslog restart 

---

Sources and additional help

There is very good support at TLP Website

Useful Config Link 1

TLP Settings

ALPM

---

Optional tweaks

---

Tweak your CPU frequency with indicator-cpufreq

Installation

indicator-cpufreq will help you change your CPU frequency on the go:

 sudo apt-get install indicator-cpufreq 

Go to Dash > search for Startup > edit indicator-cpufreq add -f or copy paste the following command:

 indicator-cpufreq -f 

With the indicator you will be able to monitor your current CPU frequency & can change CPU frequency

Changing CPU frequency

Click on indicator

---

PowerSavingTweaks for Intel Graphics

Configuration

 sudo nano /etc/default/grub

change:

 GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" 

to:

 GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.lvds_downclock=1 drm.vblankoffdelay=1"

and run:

 sudo update-grub

Then Reboot to apply the changes. You won't need other tweaks as they are already added by defaults.