X autodetection/configuration, was Re: [Fedora-livecd-list] squashfs -- anyone have a pristine tree?
--- Jeremy Katz <katzj(a)redhat.com> wrote:
On Wed, 2006-04-12 at 10:12 -0700, Jane Dogalt wrote:
> > What does X autodetection mean?
> > X is X.
>
> Actually A is A, but...
>
> X autodetection is udev 'correctly' supporting hot/coldplug of vga
adapters.
>
> In reality it's a few lines of script here and there that accomplish more
or
> less the same thing.
More realistically, it's the work in X itself to autoconfigure itself
based on the monitor and video cards present in the machine. Anything
else is going to be less than optimal. The X server already has all
kinds of this information (read through your X log sometime), but it
basically just throws it out. Instead, we really want it to be using
that information to give an "optimal" configuration and then things like
resolution can start being a user preference[1]
If someone is interested in helping to work on this, I can put you into
contact with one of the X guys who has started looking at it as well
Actually it's called "Xorg -configure". That will generate an xorg.conf
file
that matches your vga (and sometimes monitor I think) hardware. Then you do
some sed or python or perl to tune things like the user preferred resolution.
I was using this feature immediately after it was released in XFree86 several
years ago in a mandrake-8.0 livecd. Though my appliance only required 640x480,
so I didn't have to worry too much about how successfully the monitor probing
(edid stuff) worked.
Then if you want to, you can do some more scripting to replace nv with nvidia
etc (assuming you've agreed to all their terms, etc...)
-jdog
Jeremy
[1] This is already the case, we just have to set up the defaults where
we _can't_ easily do probing for monitors
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