gumstix

On 06/10/2011, at 6:22 AM, Ferenc Kőszegi wrote:
> I have got the Gumstix pack (Overo FE COM and Chestnut43 expansion board 4,3"LCD).
> I have Assembled the Stix. There is not any definite picture on the LCD.
> What I can see are black vibrant lines on white background. 
> Only a kind of setting is missing, or is it a more serious problem? 
> I have used a new software from the ”Pre-Built Images”, but nothing changed.
> I have modified the default display variable as it was written on the Gumstix website.

I suspect that hasn't worked. When you interrupt the boot, you need to do three things:

setenv defaultdisplay lcd43
saveenv
boot

Did you do those three?

Clifford Heath.

> I suspect that hasn't worked. When you interrupt the boot, you need to do three things:
>
> setenv defaultdisplay lcd43
> saveenv
> boot
>
> Did you do those three?

Yes, we have done this setting. I've checked the Xorg.log, but there's
nothing suspicious, The resolution is OK, the Xorg process is running.

On 06/10/2011, at 5:57 PM, József Lénárt wrote:
>> I suspect that hasn't worked. When you interrupt the boot, you need to do three things:
>> Did you do those three?
> Yes, we have done this setting. I've checked the Xorg.log, but there's
> nothing suspicious, The resolution is OK, the Xorg process is running.

In that case my only suggestion is that the screen is faulty. We have one
that got damaged too, even though the stereo microscope shows no
physical damage (it was damaged while being transported), it prevents
the Overo from even showing its power LEDs. The ribbon cable is
easily damaged, though I suspect that in our case one of the de-coupling
capacitors on it has failed short-circuit or something, probably due to the
cable being flexed.

The warning then is too be very careful with the screens and the connectors,
and not to move things once they're plugged in.

Clifford Heath.

That is exactly what it looks like when you don't have the default
environment setup

Did you do this?
Overo # nand erase 240000 20000
Overo # setenv defaultdisplay lcd43
Overo # saveenv
Overo # reset

2011/10/7 Áramvadász <aramvadasz@...>

>  ****
>
> Dear Everybody,
>
> ** **
>
> ** **
>
> I bought a Overo FE COM, Chestnut43, LG **4.3 inch** LCD touch screen.
> Nothing appears on the display, only black vertical lines. I have modified
> the default display variable as it was written on the Gumstix website. I
> have used a new software from the "Pre-Built Images", but nothing changed.
> It might be a hardware fault. I'd like to send back the wrong part.
> According to the Warranty Coverage I ask for your help. Do you have an
> idea, which part is wrong? The display, the chestnut, or do you have
> further ideas in connection with the software?
>
> May I send it back assambled, so that they can see how I used, and they
> can change the wrong hardware?
>
> ** **
>
> Thank you very much for your help.
>
> ** **
>
> Best regards,
>
> ** **
>
> Ferenc Kőszegi
>
>
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