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lcd fun

From: "Roger Gonzalez" <>
Date: Wed, 4 Sep 2002 17:47:41 -0400

So, I bought a nice 10.4" 640x480 transflective display kit from
http://www.displayconnections.com/ and after an abortive attempt at crimping
a 44 pin connector for the PCM-5822 onto the zillion individual wires coming
out of the teensy plug, I eventually soldered a chunk of laptop hard drive
cable on and crimped onto that.  Tedious.  Very very tedious.

I have picture!  Yay!  Colors seem correct.  Can't get the backlight to fire
up yet because it needs a rather thirsty 5A at startup (3A continual).

Unfortunately, the picture is not centered correctly in the screen.  It
starts about 1/3 of the way down, and wraps around the top a tiny bit.

The display is capable of 640x480, 640x400, and 640x350, depending on the
polarity of the sync lines.

It seems like it would default to 640x480, but who knows.  And I would
assume that the Advantech would also default to 640x480.  So I'm currently
assuming that it isn't a resolution mismatch, but rather that the timings
are just off a bit.  (And until I learn how to get the console to boot in a
non-standard display mode, I'll stick with this theory!)

I remember dinking with timings by hand in an XF86Config file back in the
day, but I have no idea what to do if the basic vga isn't in sync.

Any suggestions?

-Roger

Roger Gonzalez
mailto:

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