How to completely shutdown Ati card

Question

I would like to know how do i prevent my Ati card from turning on when i enter on ubuntu 11.10. My bios only lets-me shutdown intel hd card or leave the both on but i want to know if is possbible to completely shutdown without having to access to the bios.( if is possible to turn of without using Vgaswitcheroo even better!)

My system is: Acer 3820tg-- intel core i3 350M, 2.26 Ghz L3, Ati Mobility Radeon HD 5470 up to 2138 MB hyper memory, 13,3" HD LED LCD, 4gb DDR3, SSD corsair 60GB sata 2.

Answer 1

You can blacklist its kernel module. You can do that by editing blacklist.conf

sudo vi /etc/modprobe.d/blacklist.conf

You should probably add something like this:

blacklist fglrx
blacklist radeon
alias radeon off
alias lbm-radeon off

That will blacklist ATIs proprietary driver (fglrx) as well as its opensource counterpart.

Edit:

Ok, how about using vgaswitcheroo then? Add those lines to your /etc/rc.local file before exit 0:

modprobe radeon
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch

That should work.