Comment 19 for bug 1178747

this is the output of grep PCI /var/log/Xorg.0.log when booting with grub-efi

Grub commandline:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.modeset=1 i915.lvds_use_ssc=0 i915.lvds_channel_mode=2"

/boot/grub/custom.cfg:
## Switch gmux to IGD
outb 0x728 1
outb 0x710 2
outb 0x740 2
## Power down ATI
outb 0x750 0