Tuesday, December 30, 2014

Reinstall / Recover GRUB from Ubuntu live CD / USB

This is the common problem which is faced, when you try for dual boot. Easily Recover / Re-Install Grub in Ubuntu using Boot-Repair from live cd / usb. Boot Repair is the simple graphical tool used to repair, restore or reinstall the grub bootloader on Ubuntu. Now this tools has been updated with some new features in advanced option, using boot- repair you can also restore the MBR on Windows.


On dual boot once you update your Ubuntu OS, Windows / Fedora will not be listed on your grub. After installing Windows / Fedora your Ubuntu will not boot anymore and its grub may be wiped out. To restore it follow the steps below

To Reinstall Grub

You need to have Ubuntu Live CD or Live USB. Normal session can be used to repair the grub. Boot using your Ubuntu Live CD or Live USB, while booting choose Try Ubuntu.


Once booted then open a terminal, and run the following command one by one to install the boot repair.

To add boot-repair to the repository
sudo add-apt-repository ppa:yannubuntu/boot-repair

To Update your repository
sudo apt-get update

To install boot-repair
sudo apt-get install -y boot-repair

Once Installation complete run boot-repair on terminal by typing the following command or select it by System->Aministration->Boot Repair.

boot-repair

NOTE: Update the Boot Repair if its newer version is available.

It will scan the System for few seconds and will show you the options Recommended repair and Create a BootInfo summary. By clicking the Recommended Repair it will start repair the grub. Check the screen shots below.





Once done click ok and restart your system, your grub should work now. If not run the boot-repair again using live cd / usb. Then follow the steps below.
Select the Advanced options, In Main options tab check whether the following options are selected or not. If not select it, the options are Reinstall Grub and unhide boot menu for 10 seconds. Check the screen shot below


Then select the GRUB locations tab and check the following options are selected or not. The options are OS to boot by default and place grub into, In “OS to boot by default” option choose the OS which you want to be default on boot. Then select the drive where you need to reinstall the grub in “place grub into” option and click apply. Check the screen shots below






Click ok and restart your System.

Hope this will be helpful for you!!!


To Restore MBR

Run boot-repair on terminal by typing the following command or select it by System->Aministration->Boot Repair.

boot-repair

It will scan the System for few seconds and will pop-up a small window. Select Advanced options and in Main options tab select Restore MBR. Check the screen shot below.




Then select the MBR options tab, check the drive for MBR and Windows OS. By default all the options are selected correctly if not select the drive where your MBR is to be and the correct OS. Click apply now, check the screen shots below.






Once done click ok and restart your system and it should work. Then after logging in into your windows, go to Disk Management in Computer Management then select the Storage. Now you will see the list of all available partitions, there you select the linux partitions and delete it. Make a new partition from the deleted one and format it with ntfs. Thats it your done.

Hope this will be helpful for you!!!


Thursday, December 11, 2014

How to solve Display Driver issue on Ubuntu 12.04 "intel corporation 4 series chipset integrated graphics controller"


  • sudo apt-get install linux-generic-lts-raring linux-headers-3.8.0-30 linux-headers-3.8.0-30-generic linux-headers-generic-lts-raring linux-image-3.8.0-30-generic linux-image-generic-lts-raring
  • sudo update-grub && sudo reboot
  •  sudo apt-get install libgl1-mesa-dri-lts-raring libxatracker1-lts-raring xserver-xorg-core-lts-raring xserver-xorg-input-all-lts-raring xserver-xorg-input-evdev-lts-raring xserver-xorg-input-mouse-lts-raring xserver-xorg-input-synaptics-lts-raring xserver-xorg-input-vmmouse-lts-raring xserver-xorg-input-wacom-lts-raring xserver-xorg-lts-raring xserver-xorg-video-all-lts-raring xserver-xorg-video-ati-lts-raring xserver-xorg-video-cirrus-lts-raring xserver-xorg-video-fbdev-lts-raring xserver-xorg-video-intel-lts-raring xserver-xorg-video-mach64-lts-raring xserver-xorg-video-mga-lts-raring xserver-xorg-video-modesetting-lts-raring xserver-xorg-video-neomagic-lts-raring xserver-xorg-video-nouveau-lts-raring xserver-xorg-video-openchrome-lts-raring xserver-xorg-video-r128-lts-raring xserver-xorg-video-radeon-lts-raring xserver-xorg-video-s3-lts-raring xserver-xorg-video-savage-lts-raring xserver-xorg-video-siliconmotion-lts-raring xserver-xorg-video-sis-lts-raring xserver-xorg-video-sisusb-lts-raring xserver-xorg-video-tdfx-lts-raring xserver-xorg-video-trident-lts-raring xserver-xorg-video-vesa-lts-raring xserver-xorg-video-vmware-lts-raring libxrandr-ltsq2 x11-xserver-utils-lts-raring xserver-common-lts-raring
  •  sudo apt-get install --install-recommends xserver-xorg-lts-raring
  • sudo apt-get autoremove
  • sudo apt-get autoclean
  •  sudo dpkg-reconfigure $(dpkg -l | awk '{print $2}' | grep 'lts-raring' | tr '\n' ' ')
  •  sudo reboot

Reset GNOME Keyring Password on Ubuntu


The problem

You are prompted by the system to enter your keyring passphrase in order to unlock additional keys. None of your passphrases work–somehow you have become locked out of your keyring. In this situation you may not be able to unlock needed keys, such as passwords, SSH or GPG keys.

The solution

The only solution that I’ve been able to come up with is to delete the keyring contents, including the incorrect or corrupt passphrase. Note: this will destroy all stored keys in the keyring, requiring that they be re-imported. Other than the need to “start over” with the keyring manager, this solution should be otherwise harmless.

Method :

It is possible to clobber your keyring passphrase and settings from the Terminal. Open a terminal (Applications > Accessories > Terminal), and run the command:

rm ~/.gnome2/keyrings/login.keyring

On older systems you may need to try:

rm ~/.gnome2/keyrings/default.keyring