Disable independent video card in Linux

Disable the independent video card NND in Linux and plan to install Ubuntu in the notebook. The installation is very convenient, but it keeps shutting down when used. Later I found it was an issue of independent video card fever. I checked it online and found an open-source project called Bumblebee that can control dual-graphics switching. So I tried to dress up. Who knows that the installation was extremely slow, and the laptop was overheated and shut down. Finally, we found a method to disable the independent video card through commands. The world is finally in peace... The notebook is not so hot (how is the heat dissipation Technology of major manufacturers so slow: check whether your system has the/sys/kernel/debug/vgaswitcheroo/switch file. If yes, in/etc/rc. add the following two sentences to local: echo IGD>/sys/kernel/debug/vgaswitcheroo/switchecho OFF>/sys/kernel/debug/vgaswitcheroo/switch this way, you can turn OFF the dedicated display when starting the system and only use the set display. Run the following command to check whether to disable the exclusive command: sudo-scat/sys/kernel/debug/vgaswitcheroo/switch: 0: IGD: ++: Pwr: 0000: 00: 02.01: DIS: Off: 0000: 01: 00.0: indicates that the dedicated display is successfully disabled. PS: This method seems to be invalid for fedora18. Bumblebee is finally installed. For detailed installation methods, see the http://fedoraproject.org/wiki/Bumblebee but run lspci | grep-I vga may not take effect after installation. You must use yum update to update the data.