[colord] xrandr id unstable

[Alexey Galakhov]

Hello,

Which session daemon are you using? Gnome gnome-settings-daemon, KDE
colord-kde or generic xiccd? The xrandr id is generated by the session
daemon and not by colord.

Regards,
Alex

On 08/22/2013 07:37 PM, Sanford Rockowitz wrote:
> I just stumbled across the following issue because it tripped up one of
> my utility programs for managing color profiles.   Perhaps its a known
> anomaly that does not pose a problem for colord, but it surprised me.
> 
> By xrandr id I mean the identifier that looks like:
>   xrandr-Dell-DELL P2411H-F8NDP11G119U
> 
> My understanding of this identifier is that it's constructed by taking
> the model and serial number directly from the EDID.  The manufacturer
> field is obtained by looking up the manufacturer code from the EDID in
> the pnp.ids file.    This value is stored in the Mapping Device ID
> metatag field of the profile.
> 
> The problem is that the pnp.ids field can vary from installation to
> installation (and dispcalGUI even has its own private copy), so if you
> copy a profile from one installation to another, the stored metatag
> value may not match the value calculated from the EDID.  As a result,
> comparisons that should match will fail.   For example, on my Fedora 18
> installation, manufacturer code 'DEL' maps to manufacturer name 'Dell',
> but on my Fedora 19 installation (created by cloning the Fedora 18
> installation and upgrading), it maps to 'Dell Inc.'.
> 
> Sanford
> 
> 
> 
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