I don't think SELinux has any bearing on the driver's ability to properly work with switchable graphics. Suggesting the OP turn it off is akin to suggesting a user run a segfaulting program as root. It addresses a problem that may not be relevant, and does so with complete overkill.
IIRC, Linux in general does not play nice with software switchable graphics. Unless there is a physical mechanism to switch between GPUs, you may be SOL. I will offer the off-the-cuff suggestion of explicitly defining your desired GPU and it's PCI bus id in xorg.conf.
Here's some reading, for your reference :
http://nouveau.freedesktop.org/wiki/Optimus
http://www.nvidia.com/object/linux-display-ia32-270.41.06-driver.html. (additional info tab)
On Oct 21, 2011 3:51 PM, "Adam Williamson" <awilliam@xxxxxxxxxx> wrote:
On Fri, 2011-10-21 at 13:39 +0800, Zhang Di wrote:
> Hello everyone,
> Now I am using F16 beta version, after today's update, I was
> random logged out just after I logged in.
> My computer is Lenovo's Thinkpad T420, when I changed the display
> to integrated graphic(intel), it can not work even in fall-back model.
> I only can work with the nVidia graphic card, but the nouveau driver
> doesn't work on it.
> I don't know what's the matter, I search the fedoraforum, someone
> has the same problem with me.
> http://forums.fedoraforum.org/showthread.php?t=271191
> http://forums.fedoraforum.org/showthread.php?t=271148
>
> I love fedora very much, can anyone give me some help!
>
> Thank you!
if you're using the nvidia proprietary driver (it sounds like you are,
but i'm not totally sure) try booting with 'enforcing=0'.
--
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | identi.ca: adamwfedora
http://www.happyassassin.net
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