iLiad hacking the screen refresh cycle

DHer · 05-11-2008, 06:49 PM

I've been using my Iliad quite regularly now for the last nearly years (but not taking part here in the dev corner, sorry guys), but the screen is starting to have issues.

There are two of those defect lines showing a significantly brighter white than the rest of the screen. I'd guess that the screen is getting "slower", i.e. the refresh cycle doesn't manage to reach the white level once possible. Another indicator is significant ghosting when deleting lines I've drawn.

Did anyone of you fiddle with the voltage/timing parameters - and if you did, could you please give me some pointers where to get started?

As far as I know, they are in one of the proprietary blobs, so not so easy to reach.

Thanks for your help.

Shaggy · 05-13-2008, 10:46 AM

iRex usually recommends that you don't mess around with the waveforms on the device. They say that you can destroy the screen if you don't know what you're doing.

Adam B. · 05-13-2008, 03:07 PM

Shaggy's correct. The waveform is in a part of flash not accessible by the file system.

I have had luck a while back using a waveform from an earlier software release, and starting the display manager with the option to use that. However, it's binary as well, so therefore I would have no idea how to modify it.

05-11-2008, 06:49 PM	#1
DHer Addict Posts: 261 Karma: 156 Join Date: Jul 2006 Device: iliad	hacking the screen refresh cycle I've been using my Iliad quite regularly now for the last nearly years (but not taking part here in the dev corner, sorry guys), but the screen is starting to have issues. There are two of those defect lines showing a significantly brighter white than the rest of the screen. I'd guess that the screen is getting "slower", i.e. the refresh cycle doesn't manage to reach the white level once possible. Another indicator is significant ghosting when deleting lines I've drawn. Did anyone of you fiddle with the voltage/timing parameters - and if you did, could you please give me some pointers where to get started? As far as I know, they are in one of the proprietary blobs, so not so easy to reach. Thanks for your help.

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05-13-2008, 10:46 AM	#2
Shaggy Wizard Posts: 4,293 Karma: 529619 Join Date: May 2007 Device: iRex iLiad, DR800SG	iRex usually recommends that you don't mess around with the waveforms on the device. They say that you can destroy the screen if you don't know what you're doing.

05-13-2008, 03:07 PM	#3
Adam B. Addicted to Porting Posts: 1,697 Karma: 7194 Join Date: Oct 2006 Location: Indianapolis, IN Device: iRex iLiad, Nokia 770, Samsung i760	Shaggy's correct. The waveform is in a part of flash not accessible by the file system. I have had luck a while back using a waveform from an earlier software release, and starting the display manager with the option to use that. However, it's binary as well, so therefore I would have no idea how to modify it.

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