笔记本安装centos 6.0 无法调节分辨率 双显卡

file:///root/%E6%A1%8C%E9%9D%A2/Screenshot.png
[root@localhost 桌面]# lspci|grep -i vga
00:02.0 VGA compatible controller: Intel Corporation Sandy Bridge Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: nVidia Corporation Device 1050 (rev a1)
[root@localhost 桌面]# glxinfo |head -n 40