[Bug 105549] Black/blank screen at boot (last message line: fb: switching to inteldrmfb from EFI VGA) unless i915.modeset=0 is set

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105549

--- Comment #35 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Jani Nikula from comment #27)
> There are KBL systems with SPT and KBP, but there are *also* newer KBL
> systems with Cannonlake PCH (CPT). The way the VBT is specified, we need to
> do some mapping on the DDC pin on CPT. The mapping would be right for CPT,
> but wrong for SPT and KBP.
> 
> Now, I presume Dell has inadvertently based their BIOS update on the newer
> model's BIOS, without taking this into account.

Nope, the VBT is just plain wrong also for CNP.

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