[SOLVED] Ubuntu 12.04 boots to Command Line when Rebooting after Kernel Update

Hi Folks,

Recently I came around this problem, that whenever I used to update my linux (kernel) which is currently now (3.2.0-43-generic-pae), on restarting my machine after updation my machine would always boot to linux command line asking for the userid and password. It would not boot to the GUI. On searching quite a bit I found out that this problem was due to a problem with graphics card driver update. The kernel update was unable to load properly the previously installed driver and showed a message no graphics driver is installed. To overcome this problem and boot to your GUI simple steps have to be followed. These steps simply remove any installed graphics driver which cause problems and u can later install the graphics card driver specific to your machine later on when u boot to GUI.

Step 1) when u boot to command line enter your user id and password correctly. Then enter the following commands line by line.

sudo sh /usr/share/ati/fglrx-uninstall.sh

sudo apt-get remove --purge fglrx fglrx_* fglrx-amdcccle* fglrx-dev*

after these commands run successfully perform a reboot using

sudo reboot

Then u shall be able to boot into your GUI. Now u need to install your graphics card driver again. If you tend to have a AMD Radeon HD 6300 series graphics card u can follow how to install post <here>.

[GUIDE To] Installing AMD Radeon HD 6300 Series Graphics Card Driver in Ubuntu 12.04

Hello Folks,

In this post, I would tell you about installing Graphics Driver for AMD Radeon HD 6300 Series (on a laptop) in Ubuntu 12.04. I had a tough time installing this driver as I had to read a ton of tutorials to actually figure out the correct way.

Note: Do not download any AMD graphics card driver from the Ubuntu Software Centre or Hardware Settings.

The problem that made me install this particular driver was that if u do not install this driver, Ubuntu just tends to constantly use your graphics card for rendering normal graphics (i.e. graphics that really do not need the use of your graphics card). This leads to heat up of the laptop so frequently that everytime it gave me thermal heatup shutdowns. It was really annoying. Thus I would recommend everyone to install graphics driver on their Ubuntu if their laptop comes with a separate graphics card.

Note: No need to install graphics driver if u have your graphics card onboard. Ubuntu just works fine with an onboard intel graphics card.

Step 1) Download the graphics card driver for your linux version from the AMD website here.

Step 2) Save the downloaded file in your home directory and Extract it in the home directory by using archive manager. Right click on the file and open with archive manager and extract it in home directory.

Step 3) Rename the extracted file to driver.run

Step 4) Now open terminal using Ctrl + Alt + T and type

sudo chmod +x driver.run

sudo ./driver.run

Step 5) An AMD catalyst control window would open. U can proceed by pressing next and performing the installation. After successful installation Reboot your laptop.

Step 6) Open Terminal Ctrl + Alt + T and type

fglrxinfo

u should get the following output

fglrxinfo
display: :0 screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 6300M Series
OpenGL version string: 4.2.11733 Compatibility Profile Context

The graphics driver has been installed successfully.