On Tuesday 2010-12-14 21:18, Dave Airlie wrote:

On Wed, Dec 15, 2010 at 3:41 AM, Jan Engelhardt [off-list ref] wrote:

quoted

booting with video=off nor video=i915:off has any effect on skipping 
FB. What is the correct option to stop FB from taking over my boot 
consoles?

For KMS its not fb taking over its the drm i915 driver, nomodeset will 
stop it however X will no longer work since it relies on the kernel 
driver.

That would make sense. Furthermore I discovered that video=vesafb:off 
also has no effect, but here it is clear because the source code ignores 
the return value of fb_get_options, and so ignores any off command.

The real strange thing is that video=offb:off on an Apple Xserve G5 
PPC64, while probably skipping OFFB initialization, still ends up in a 
640x480 mode with a 8x16 font instead of retaining the PROM 
console/font.