Re: IOKit + display models
Re: IOKit + display models
- Subject: Re: IOKit + display models
- From: Dan Bernstein <email@hidden>
- Date: Fri, 26 Nov 2004 23:50:34 +0200
The product name could be coming from the EDID block (it is exported
in the properties dictionary of the IODisplay (or subclass) object of
your display, so you can see it in IORegistryExplorer or ioreg; it is
at offset... hmm... 77?).
On Thu, 25 Nov 2004 22:54:59 -0500, Alex Reynolds
<email@hidden> wrote:
>
>
> I'd like to figure out how to get from the IOKit call-equivalent of:
>
> [Sond] reynolda$ ioreg -c AppleDisplay | grep DisplayVendorID
> | | | "DisplayVendorID" = 1552
> | | | "DisplayVendorID" = 4268
> [Sond] reynolda$
>
> to the corresponding list of the two monitor models connected to my machine,
> which the Display system preference says are an "Apple Studio Display" and a
> "Dell 1504FP".
>
> The files in /System/Library/Displays/Overrides/DisplayVendorID-610 are not in
> a
> consistent format as far as the information they return. I'll bet that isn't
> where this information is kept anyway.
>
> There's an entry in there that matches 1552 to an Apple Studio Display but I
> can't find anything for non-Apple displays (e.g. matching the 4268 entry to the
> Dell display).
>
> (This table must be *somewhere* if the Display system preference knows it.)
>
> Does anyone know how to bend IOKit's ear to return this information?
>
> TIA,
> Alex
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