Recently i bought a Dell N5110 that it has double graphic card,I confused :
By default kernel recognizes intel i915 driver for first card, of course, result of my 'lspci -v |egrep -i vga' is here:
Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
01:00.0 VGA compatible controller: nVidia Corporation Device 0df5 (rev a1) (prog-if 00 [VGA controller])
At first i exported xorg.conf that i manipulate it such as compiz and touchpoad.But when i put it into /etc/X11, i can't see login widget however i can see gdm page, You can see the following thread for more information:
Then i downloaded associated driver from nvidia.com and installed it without problem.But when you'll see log file, you prevent famous error:
(EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found)
I passed selinux=0 to kernel as param, but it didn't fix.
I attached 2 log files: 1. when i didn't put xorg and call startx and 2. put xorg into /etc/X11 and call startx.
3th file is my xorg.conf that i applied it.
i confused for double card.
Note: my bios doesn't has feature that disable gpu.