I just installed an HIS Radeon HD 6670 graphics card. After installing the card it ran fine using the OpenGL drivers. In fact, that's what I'm using right now. I followed the installation instructions at https://help.ubuntu.com/community/BinaryDriverHowto/ATI. When I reboot I come up in terminal mode, there is no graphical interface. Luckily for me I used to run a FreeBSD server back when X Windows was so hard to configure we did most things at the command line anyway, so I know how to shut down or reboot from there. Anyway, when I tried to start the X server it came back with a "segmentation fault" error. I think the problem is there is no screen section in my xorg.conf file. This was created by running 'sudo aticonfig --initial" after installing the AMD driver:
Can you point me to a tutorial on how to configure the xorg.conf file? I used to could generate the file from the X server, but I don't recall the flag and none of those shown when I get the error message seem appropriate. Things have changed so much since I used FreeBSD I find myself in a position like a beginner (maybe that's where I should be posting this question). I realize I'm not giving you much to work with, but I'm hoping this is a common enough problem that the fix will be well known.
roger@roger-Aspire-M1610:~$ cat /etc/X11/xorg.conf
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen-0" 0 0
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
Viewport 0 0