I am using HP Compaq 6735b laptop and it comes with a ATI Mobility Radeon HD 3200 Graphics card. I have recently installed 12.04 on it.
Can someone tell me how will I know if the Graphics card is working or not?
Go to Setting > System Information and will be displayed common specs information consits of OS architecture, processor, gpu, hardrive and memory.
Go to the terminal : CTRL + ALT + T
Then type :
Finally will be displayed information of your running VGA.
Actually Ubuntu is bundled with open source AMD Accelerated Graphics driver and going to automatically run when Ubuntu detecting AMD Radeon on your board. if it's not successful, will automatically be directed to BIOS VGA. It's indicated by display that displaying low resolution 800 x 600.
Run the Additional Drivers program and it will show you 3rd party drivers available for your Ati graphics card and whether they are enabled or not.
Note: Sometimes enabling the Ati graphics from this front-end does not always work, so if you are one of the unlucky ones then do this:
Open Terminal and type each of the 3 lines separately and hit enter:
The last command should bring up something similar to this:
Now reboot and all should be working well.