kernel with switcheroo

[padab]

Hi all.
I have laptop asus k53t with two graphics card radeon.
Need to switch between them.
I build kernle 2.6.39.4 with vgaswitcheroo on ubuntu 10.4 x64.
But switcheroo don't work. Help please.
Info:
lspci | grep VGA

00:01.0 VGA compatible controller: ATI Technologies Inc Device 9647
01:00.0 VGA compatible controller: ATI Technologies Inc Device 6741
grep -i switcheroo /boot/config-2.6.*

/boot/config-2.6.39.4-custom:CONFIG_VGA_SWITCHEROO=y
grub

...
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"
..

cat sys/kernel/debug/vgaswitcheroo/switch

cat: sys/kernel/debug/vgaswitcheroo/switch: No such file or directory
in rc.local


chown padab:padab /sys/kernel/debug/vgaswitcheroo/switch

in /etc/fstab


none /sys/kernel/debug debugfs defaults 0 0

installed AMD Catalyst 11.11 Proproetary Linux x86 display driver
in /etc/modprobe.d/radeon-kms.conf

options radeon modeset=1

don't have radeon in modprobe blacklist's
debugfs mounted
xorg.conf don't exist, maybe this is a problem?
Sorry my bad English. Thanks.

[dE_logics]

I'm not sure, but unlike with Nvidia, you must have a physical switch or a Bios option to change between graphics cards -- this this very simple comparatively.

[padab]

no function in the BIOS to switch the cards :(
and button too(

[padab]

I generated xorg.conf he normal? may be change driver to radion?
Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Module"
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Device"
Identifier "aticonfig-Device[0]-0"
Driver "fglrx"
BusID "PCI:0:1:0"
EndSection

Section "Screen"
Identifier "aticonfig-Screen[0]-0"
Device "aticonfig-Device[0]-0"
Monitor "aticonfig-Monitor[0]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSectio

UPD
when i change fglrx to radion ubuntu run with low graphics mode