[Intel-gfx] [PATCH 3/3] [drm/i915] - Implement manual override of LVDS single/dual channel mode

[metatech]

Mike Isely <isely <at> isely.net> writes:

> This is yet one more case where the Intel driver had been implicitly
> relying on the video BIOS for display configuration.
> 
> Almost nobody should ever need to touch this option,
> and its default value of zero is interpreted to preserve existing
> probe-the-hardware behavior.  

Hello,

Just for information, this patch is very useful for Mac machines 
(MacBook Pro 2010 or higher with Intel integrated graphics) 
booting Linux in EFI mode, because in this mode the BIOS 
does not initializes the graphic card, and therefore it is 
required to force dual channel mode with this parameter.

Regards,

metatech