Re: xorg pci probing

["Christoph Egger" <Christoph_Egger%gmx.de@localhost>]

> On Tue, Jan 18, 2011 at 11:39:35AM +0100, Christoph Egger wrote:
> > The function pci_device_is_boot_vga() is supposed to return 
> > 'true' for the pci vga device the firmware uses which is not
> > neccessarily the OS console device (it can be a serial console).
> 
> Ok. But your function answers "this is the vga device where wsdisplay0
> attached" instead - is that a safe bet, especially in case you boot with
> a serial console?

According to macallan@  ttyE* is the first graphic device,
ttyF* the second, ttyG* the third, etc.

So yes, it is safe.

 
> I still completely fail to see why X would like to know this detail and
> what a wrong answer would mean. If it's just a wrong default display
> but fixable via config file, it's fine.

The pci probing happens before the config file comes into play.
That's why the config file has no effect.
 
> > > Yes, but the same situation could happen on a desktop. Assume I would
> > > have such a machine and boot it with serial console. According to your
> > > logic (as far as I understood it so far), I wouldn't be able to use X.
> > 
> > Right. The error message "Primary device is not PCI" comes from
> 
> This is unacceptable. I have a amd64 machine with serial console that I
> use to run X, luckily it has only a single vga card right now.

Me too which is an other laptop.

Christoph