[Bug 210446] vt(4) when switching between virtual consoles there is a 4 second hesitation in graph mode.

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=210446

Stefan B. <sblachmann at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |sblachmann at gmail.com

--- Comment #2 from Stefan B. <sblachmann at gmail.com> ---
I also confirm that bug.

CAUSE:
The setvideomode stuff is unnecessarily called.
Highly annoying, because mode gets reset, with sync stopping, monitor blanking
and taking some time to lock in its PLL again.
One reason why I use sc.

HOW TO FIX:
When changing from one vt to another, do NOT do an unnecessary call to
setvideomode BIOS function. This is ONLY necessary when switching between X and
vts.
Just blit the framebuffer with the contents of the newly selected VT.

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