Olimex Support Forum

OLinuXino Android / Linux boards and System On Modules => A20 => Topic started by: marineo on October 06, 2014, 10:33:20 PM

Title: A20 + LCD, flickering , no image
Post by: marineo on October 06, 2014, 10:33:20 PM
Hi,

I'am having a weird problem with A20.
I downloaded and flashed new Android image:
A20_android_422_TS_USB_UART_I2C_WIFI_LAN_HDMI_LCD_1024x600_release_3.img

The image boots and HDMI works, but when I connect 15" LCD, it does not show anything.
When I'am on main screen(home screen) the LCD is only flickering, but when I go to settings or something else, LCD stops flickering.

Here is the information running on HDMI:

(http://i59.tinypic.com/2j4r1ub.jpg)

And here is LCD output.

(http://i62.tinypic.com/20tf1vd.jpg)

You can see a light flickering(only when I'am at home screen)

(http://i59.tinypic.com/294321c.jpg)

Any solution for this?
I did try with stock image and problem exist.
Title: Re: A20 + LCD, flickering , no image
Post by: otyugh on October 06, 2014, 11:30:08 PM
Problem of power supply to me.
Add one more maybe ?

Personnaly I did get the 7" working on the debian edition using the /root/change_display.sh, never tried android...
Title: Re: A20 + LCD, flickering , no image
Post by: marineo on October 08, 2014, 09:16:01 AM
I did.

Just tried Debian and work out of the box.

Problem is Android
Title: Re: A20 + LCD, flickering , no image
Post by: bobdole on October 09, 2014, 07:10:24 PM
Having the same issue here with the 15 inch screen and stock android. I didn't try Linux yet can you conform 15 inch monitor works with Linux. also did you add a separate power supply for the monitor i noticed at the back there was a connector you change to power 5v via external 5v power supply i think ?, I cant find any paperwork on it so i presume that's what your supposed to do. as well i think that monitor is 1366 x 768 or something like like. Anyways if you guys figure it out let me know.