Radeon Driver Debian | Ubuntu

 Identifying Your Graphics Chip

First, check your graphic card name and chipset:

 

sudo update-pciids #optional command, requires internet
lspci -nn | grep VGA

It should report something like this for your graphics card:

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV710 [Radeon HD 4550]

Testing The Driver

To look for boot messages/errors, check

 

dmesg | egrep 'drm|radeon'

To see your OpenGL information, you can run the commands below. Make sure your OpenGL renderer string does not say "software rasterizer" or "llvmpipe" because that would mean you have no 3D hardware acceleration:

 

sudo apt-get install mesa-utils
LIBGL_DEBUG=verbose glxinfo
Removing the proprietary fglrx driver

 Typically, the following manual commands will properly uninstall -fglrx:

 

   sudo apt-get remove –purge xorg-driver-fglrx fglrx*

  

Fonte: https://wiki.ubuntu.com/X/Troubleshooting/VideoDriverDetection#Problem:_Need_to_purge_-fglrx

Recommended configuration for X.org

  sudo apt-get install --reinstall libgl1-mesa-glx libgl1-mesa-dri xserver-xorg-core
  sudo dpkg-reconfigure xserver-xorg

 

Boot into recovery mode and select Root Shell. Then run:

X -configure

Then:

cp /root/xorg.conf.new /etc/X11/xorg.conf

Reboot and you can edit the new Xorg.conf.

 

Next Step

 

Fonte: https://help.ubuntu.com/community/RadeonDriver