I have two video cards, an Intel GMA3000 and an NVidia 8500GT (NV).
My OS is Debian testing.
In the BIOS I can choose one of the cards as primary to see through that card the BIOS screen, GRUB and Debian loading process until GDM.
If I choose the NV card as primary, I see the BIOS screen, GRUB and then I got a Kernel Panic.
Otherwise, choosing the Intel VGA in the BIOS and keeping the Monitor plugged to the NV output I don't see anything until GDM, but everything works. (That's how I'm using the PC right now, and what I'm trying to solve)
Does anyone know what is the reason of this problem?
Why does is throw a Kernel Panic?
Looking for a long time in the net I've found a workaround that worked for me in Ubuntu 9.10:
It consisted in adding
to /etc/modprobe.d/blacklist.conf file.
But then I couldn't use the Intel card as a secondary monitor.
Now, in Debian, that doesn't work. I've tried with combinations of driver blacklisting:
after modifying blacklist.conf, but it does not work.
If i try to load intel_agp or agpgart into kernel I got an error because they do not exist. But blacklisting i915 should work as in Ubuntu.
The ideal solution would be to have BOTH cards working. But at least I would like to blacklist the Intel card and use NV as primary without Kernel Panics.
Thank you very much for your help!
Extra information about my pc:
$ lspci -k
01:00.0 VGA compatible controller: nVidia Corporation G86 [GeForce 8500 GT] (rev a1)
Subsystem: Micro-Star International Co., Ltd. NX8500GT-TD512EH/M2
Kernel driver in use: nvidia
00:02.0 VGA compatible controller: Intel Corporation 82946GZ/GL Integrated Graphics Controller (rev 02)
Subsystem: Intel Corporation Device 5354
Kernel driver in use: i915
$ uname -a
Linux debian-desktop 2.6.32-5-amd64 #1 SMP Tue Jun 1 04:34:03 UTC 2010 x86_64 GNU/Linux