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Subject: Re: [9front] MB Pro early-2011 support status
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Quoth unobe@cpan.org:
> Do you know if that means vga commands for blanking could then be
> supported, something like what's tried in
> /sys/src/9/pc/vga.c:/^vgablank ?

Okay, so I found the problem by (surprise, surprise!) looking at the
code, and what calls what.  I'll try to post more details later
tonight. But it appears to be a config issue.

In plan9.ini I set $monitor to 'vga', which then sets my native
resolution to 1280x800x32.  $vgasize is not set, and if I did try to
set it to that using 'aux/vga -l' it would fail because that
resolution isn't in vgadb (I think I'd have to have the timing info,
which I don't have--but maybe that can be introspected or there's a
simple fix?  It'd be nice to be able to switch to other other
(purported) native resolutions).  So when I call /bin/screenrc (before
starting rio), there's no $vgasize so aux/vga -l $vgasize doesn't get
loaded, so drawinit is never called for igfx, so screen blanking is
never set.  I manually did: 'echo drawinit >/dev/vgactl' then when I
did 'echo blank >/dev/mousectl' I saw a flicker.  Doing a 'sleep 1;
echo blank >/dev/mousectl' works and now I have screen blanking.
Huzzah.