VGA_RASTERCONSOLE, VT switching and scrollback

[Ian D. Leroux]

As a result of some experiments last night my laptop has two kernels,
one with option VGA_RASTERCONSOLE, one without (NetBSD/amd64 5.99.55,
sources from yesterday). The kernel configs are otherwise identical.
I observe two differences in their behaviour:
- With option VGA_RASTERCONSOLE, scrolling up the terminal with
Shift+PgUp doesn't work.
- With option VGA_RASTERCONSOLE, VT-switching is broken while X is
running. Instead of Ctrl-Alt-F1 showing me the last screenful of
console output, I get a blank screen with a blinking cursor in the
top left corner. The same goes for accessing ttyE[12] using
Ctrl-Alt-F[23]. Switching back to my X session still works.

I'm not personally bothered by these, as I have no need of a raster
console. But if anyone out there uses VGA_RASTERCONSOLE and expects
these things to work, I can devote a little time to running
comparative tests to help with debugging.

Ian Leroux

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