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A general question on framebuffers

After having tamed the horrible ACPI power drain while sleeping, mostly patching quite a few things in the radeonfb code I discovered that the bootsplash code will currently work with another framebuffer (vesafb 16bit color).

My questions are:

1) what are the advantages of an hw specific framebuffer such as radeonfb as opposed to a more generic vesafb ?

2) Other than embellishing my boot screen with penguins and their brethrens what other benefits come from using a framebuffer ?

3) Is is likely that if I stop using framebuffers altogether the ACPI sleep will have less problems and therefore could use kernels with less patches ?

Thank you,

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