Comment # 51
on bug 26891
from Anonymous Helper
(In reply to comment #50) > You'll need to use vga-switcheroo to select the card you want to use. Then > you should be able to start X without any config and it will start on the > one selected by vga-switcheroo. Having two device sections as your config > does will force X to try and start on both devices. I tried without the BusID but all I got was a black screen. For some reason when I switch to the intel GPU I get a black screen also, though it did work when I booted from grub-efi earlier with the well documented outb commands to disable AMD (no BIOS from EFI w/o efistub). Not sure if it's an issue with vga-switcheroo, intel driver or something else. I don't know if it's a problem, but both cards are powered on at boot. I can switch back and forth between the GPUs (though it's tricky doing so blind when on intel graphics). Any other suggestions? Thanks.
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