could not open the device /dev/nvidia0 (gentoo)

[Hei Xia]

hi,all

My nivida is GT 425M,and I downloaded the driver from
http://www.nvidia.com/object/linux-d...12-driver.html<http://www.nvidia.com/object/linux-display-amd64-260.19.12-driver.html>.
(the installer log is in the attachment )

However,it doesn't work.

The following is the result of "lspci | grep VGA" (It has 2 graphic cards,
and I think that's the problem,but how to deal with it?)

00:02.0 VGA compatible controller: Intel Corporation Arrandale Integrated
Graphics Controller (rev 18)
01:00.0 VGA compatible controller: nVidia Corporation Device 0df0 (rev a1)

I've tried the method in http://www.x.org/wiki/NVIDIAProprietaryDriver, it
doesn't work either.


My file xorg.conf  , /var/log/Xlog.0.log and error message are in attachment
too.

Thanks in advance.
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hostname: Unknown host
xauth:  creating new authority file /root/.serverauth.17865


X.Org X Server 1.7.7
Release Date: 2010-05-04
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.34-gentoo-r12 i686 
Current Operating System: Linux Gentoo 2.6.34-gentoo-r12 #1 SMP Sun Oct 31 20:47:27 CST 2010 i686
Kernel command line: root=/dev/ram0 real_root=/dev/sda10
Build Date: 02 November 2010  01:24:01PM
 
Current version of pixman: 0.18.2
	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Thu Nov  4 01:30:04 2010
(==) Using config file: "/etc/X11/xorg.conf"
NVIDIA: could not open the device file /dev/nvidia0 (Input/output error).
(EE) Nov 04 01:30:04 NVIDIA(0): Failed to initialize the NVIDIA graphics device PCI:1:0:0. 
(EE) Nov 04 01:30:04 NVIDIA(0):     Please check your system's kernel log for additional error
(EE) Nov 04 01:30:04 NVIDIA(0):     messages and refer to Chapter 8: Common Problems in the
(EE) Nov 04 01:30:04 NVIDIA(0):     README for additional information.
(EE) Nov 04 01:30:04 NVIDIA(0): Failed to initialize the NVIDIA graphics device!
(EE) Screen(s) found, but none have a usable configuration.

Fatal server error:
no screens found

Please consult the The X.Org Foundation support 
	 at http://wiki.x.org
 for help. 
Please also check the log file at "/var/log/Xorg.0.log" for additional information.

giving up.
xinit:  No such file or directory (errno 2):  unable to connect to X server
xinit:  No such process (errno 3):  unexpected signal 2.
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