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To: 9front@hera.eonet.ne.jp
Subject:  strange behaviour of igfx and vesa
Date: Fri, 17 Jun 2016 15:48:16 +0900
From: kokamoto@hera.eonet.ne.jp
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X-Bullshit: basic stable callback software scripting replication 

I'm trying to use 8086/29a2 chip on a desktop terminal.
pci -v says:
0.2.0:	vid  03.00.00 8086/29a2  10 0:fde00000 1048576 2:d000000c 268435456 4:0000ff01 16
	Intel Corporation 82G965 Integrated Graphics Controller

I added that 8086/29a2  entry to /sys/src/9/pc/vgaigfx.c and /sys/src/cmd/aux/vga/igfx.c
and /lib/vgadb.

When I set the /cfg/pxe/xxx file like monitor=s3321wA,
I got blank screen.  I've tried display=0,1,2,3,4,5, and got
the same result.

However, I changed the the file content to:
monitor=vesa, and vgasize=1024x768x8,
and bootup the terminal as usual.

After that, I dispatched the command:
term% aux/vga -m igfx -l 1680x1050x32

Then I got the normal 1680x1050x32 screen on my LCD panel!
Of course, hardware cusor is also working fine.

What's going on here?

Kenji

PS. I'm writing this mail from that terminal.