Gentoo Archives: gentoo-user

From: "Sebastian Beßler" <sebastian@××××××××××××.de>
To: gentoo-user@l.g.o
Subject: [gentoo-user] Tell kernel to use right graphic card
Date: Mon, 22 Feb 2010 01:09:01
Message-Id: 201002220141.56744.sebastian@darkmetatron.de
Hello,

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?

Greetings

Sebastian