I was originally using a via EPIA MII 12000, the problem persisted when I switched it out for a Zotac ION N330 board. I'm using Windows XP with the drivers supplied by the manufacturer for the touchscreen.
Can you point to the vga only controller board touch drivers? Just tried these and they didn't work so I'm assuming there are some for this board. I'm hoping it may fix the issue I'm currently having with the touchscreen registering at the bottom right once I boot to Windows.
91 Toyota Supra fabrication http://www.mp3car.com/vbulletin/fabrication/73932-91-toyota-supra-fabrication.html
This page might be relevant: http://www.mp3car.com/lcd-display/11...uch-panel.html
Note this page is currently being blocked on my desktop machine for having some kind of script malware on it - had to open it on my tablet.
Seems to be the issue that the screen needs to heat up a bit before the touch panel starts functioning correctly.
I'm still suffering from the problem. I haven't tried the instructions on the link, need to get the screen out of my car which is no small task.
Sucks because this is the only thing keeping me from finishing my project. Everything else seems to be in place but I don't want to install only to have to rip it back out to fix.
I had the same problem, but with a different LCD. Usually cold starts the damn thing was acting crazy until after 10 mins. I have the mini touch 700. Drove me nuts to figure out what the problem was. Even tried the lighter trick found in these forums, where you lightly heat up the edges, but didn't work. Finally just replaced the touchscreen overlay and it was back to normal. Perhaps your overlay is hosed.
in my experience, that is happen when one or more the 4-wire resistive touch panel is loose, either that or your touch panel is pooched.
Just waiting for Derrick to reply to my emails on what we can do to resolve this. I don't think it's going to be cheap to send this back to hong kong. I'm debating whether to send the lcd or the whole kit just in case I get a new lcd/touchscreen back and it's still malfunctioning.