[Openicc] HP Elitebook 8540W notebook with Dreamcolor display

[Emil Briggs]

> 
> Made some progress. I unloaded the Nvidia proprietary driver and loaded the
> nouveau kernel module with the framebuffer X driver. The i2c bus appears
> functional now and hpdc_util read the EDID information from the panel. It
> does not recognize it as a Dreamcolor though which is not surprising since
> it's looking for the standalone monitor. If I feel brave I might be able
> to work around this by adding in the ID of the laptop panel. I'm not sure
> if thats a good idea though. Does anyone know if it's possible to damage
> the hardware with an incorrect setting?
> 
> For whatever reason the i2c bus is not usable when the Nvidia proprietary
> module is in use. I don't know if that is specific to this card/display
> combination or is more general. Since most people using the proprietary
> driver would be using nvidia-settings to control the displays it might not
> have been noticed.
> _______________________________________________

I felt brave so I added support for the panel ID and tried changing the 
presets with hpdc_util. It works. Not a great solution since the nouveau 
driver is not all that stable yet particularly for 3D stuff but it does work.