Re: [PATCH 3/9] VT binding: Make VT binding a Kconfig option

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On 6/20/06, Antonino A. Daplas <[email protected]> wrote:
All fbdev drivers have a startup mode that should always be valid. All
fbcon does is enable that mode.

You can load nvidiafb like this instead:

modprobe nvidiafb [email protected]
Good idea, it didn't occur to me to use the module parameters. Doing
it that way I can see what I am doing instead of typing blind.

> How does vbetool save state?

vbetool basically calls an int10 function that saves the state.  This
function is unique per video BIOS, ie you cannot use the state file in
another machine even if the graphics chipset is the same.

> Could VGAcon do whatever vbetool is doing?

No it can't.  Once the card is in graphics mode, vgacon cannot go to
text mode on its own.  It has to know how to write to other VGA
registers which are unique per hardware.
Might be a good place for a little call_usermodehelper example. VGAcon
could try calling vbetool to save it's state and restore it. GregKH
told me that the class firmware loader code was the place to start.

--
Jon Smirl
[email protected]
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