A20 doesn't work after running change_display_olimex_A20.sh

[pistache]

Hi.

At first use, my A20 works fine. (A20_OLinuxino_Micro_debian_34_90_release_10)
(on severals display : TV, computer screen).

I run /root/change_display_olimex_A20.sh to perfect display, and A20 reboot.
Since, black screen (no olimex startup logo, no signal). The green led on the board blink twice, delay, ...

Can you help me ?

Try to boot with another microSD card with original ISO, same problem.

Best regards

[JohnS]

If you tried an original ISO then sounds like a hardware fault.  Cable, display, etc.

John

[pistache]

Hi,

I try on another display, it works.
On this display, I don't touch hardware (cable, a20...) I run change_display_olimex_A20.sh , reboot made by this script... Same problem : blank screen, no signal.

It seems each time I do this script my A20 doesn't work at reboot? (I try a hardware reboot, change nothing...)

[JohnS]

But you do touch hardware - using that script.  Something about your display is the problem.

John

[pistache]

Sorry, I understood you mean that it was a material problem like cable unpluged...

When I received my new A20, I tryied it mon my TV (direct HDMI input), on my computer display (trought a VGA/HDMI adaptator) : there was video signal with both. But the resolution was wrong, ...
So why I used this script. And appears this problem.

Yes when I change my video configuration there is a trouble but I don't know how to solve my problem, because on the computer display or the TV, de default resolution don't by usable.

[JohnS]

One way is a different display (easy and quite cheap).

Or you can make changes to suit your display (may be hard for you).

John

[pistache]

Tryed on other displays, always the same problem.

Which log files can I inspect in /var/log to understand what is wrong ? (I can unplug the microSD and read it on another computer).


Thanks