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Old 02-21-2010, 11:41 PM
Sebastian Beßler
Default Tell kernel to use right graphic card


I have here a setup with two graphic cards and two displays.
The radeon 3650HD has my monitor connected to it via VGA
The radeon 3200HD has my TV connected via HDMI

I use KMS and the open driver and X works with two seperated screens so far
(hope xrandr support for multiple gpu comes fast) but I have a problem with
the framebuffer/KMS console.

The output from my console shows only on the TV not my monitor.
I can see the BIOS messages and use GRUB but then the monitor gets blank and
it says "no signal". I can read and see everything fine on my TV.

After X starts all is perfect.

It seems that the kernel or KMS are preferring the card with the HDMI TV over
the card with my vga TFT monitor.

Is there a boot option or something to tell the kernel that it should use the
other card?



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