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my laptop has a ATI Mobility Radeon HD 5650, and I've tried many ways to install the drivers but nothing has worked for me, how can I do it?

Also, I'm not sure why but when I put 'lspci -vvnn | grep VGA' it showes me this:

VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI 
 RS880M [Mobility Radeon HD 4225/4250] [1002:9712] (prog-if 00 [VGA 
 controller])

VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI 
 Madison [Mobility Radeon HD 5650/5750 / 6550M] [1002:68c1] (prog-if 
 00 [VGA controller])

What does this mean?

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3 Answers 3

I recommend to install xserver-xorg-video-radeon, the driver works great in trusty.

xserver-xorg-video-nouveau mentioned in the answer above is a driver for NVIDIA.

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Well, Radeon has officially dropped support for the HD series, so you'll have to use the open-source driver.

sudo apt-get install xserver-xorg-video-nouveau
sudo apt-get install --reinstall libgl1-mesa-glx libgl1-mesa-dri xserver-xorg-core
sudo dpkg-reconfigure xserver-xorg
sudo update-initramfs -u
sudo reboot #This will reboot your computer, so save any open files first.

That should get you going.

Credit and thanks to Bashing-om and QIII from the Ubuntu Forums for helping me get my card working.
This has been tested with a Radeon HD 4350.

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1  
"Nouveau" is for nVidia cards, not Radeon. Please correct. –  MrVaykadji May 25 at 15:58
    
xserver-xorg-video-nouveau provides support for NVIDIA Riva, TNT, GeForce, and Quadro cards. Not ATI Mobility Radeon HD cards –  Elder Geek May 25 at 17:15
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AMD still continues to support the ATI Radeon series. To download the drivers go here: http://support.amd.com/en-us/download The driver is dated Apr-2014 (as of Apr 30, 2014)

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3  
The question was not how to download driver files but how to install drivers. Can you expand your answer to include that information? –  jdthood Apr 30 at 8:31
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