From: Chris Ryland (cpr_at_emsoftware.com)
Date: Fri Nov 23 2001 - 23:18:11 EST
Just to follow up, I tried the VP201 with a Margi Display-to-Go 4MB card,
and it works in analog mode quite reliably (though only at 8 bpp;
sigh--higher pixel depths make it flakey when things are changing on the
screen).
So that just confirms my suspicions that it's the A21p's analog video out
port that's to blame.
-- Cheers! Chris Ryland Em Software, Inc. www.emsoftware.com----- Original Message ----- From: "Chris Ryland" <cpr_at_emsoftware.com> To: <thinkpad_at_cs.utk.edu> Sent: Friday, November 23, 2001 10:23 PM Subject: A21p vs. Viewsonic VP201
> Someone recently said he'd gotten the a21p (or similar) working with the DVI > port with a Viewsonic VP230. > > I just purchased a VP201 display (1600x1200, 20.1") to work with my A21p > (W2K) and am having troubles. > > It works in analog mode, but with a lot of noise (wavy vertical lines and > "rivers" of interference). > > It doesn't work at all from the A21p's port expander's DVI port. I'm almost > positive the monitor works, but I don't have another digital monitor to test > the A21p's DVI port against. How would I debug this? Are there settings that > aren't obvious? Should the DVI port just work when something's plugged in? > > In the display control panel, the laptop claims it sees the flat panel > display when plugged in the DVI port. But nothing happens with it. > > To make sure it's not the monitor nor the cable, I plugged into my Apple > Powerbook Ti (previous generation, not the latest), and it works flawlessly > in analog mode: locked in with perfect sharpness and no noise--a joy to > behold. > > That strongly suggests that the A21p analog video port is just plain noisy. > Is that true, in most people's experience?
This archive was generated by hypermail 2.1.3 : Thu Jan 23 2003 - 09:57:48 EST