XU3 issue with touchscreen LCD on boot

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Siriuscomp
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XU3 issue with touchscreen LCD on boot

Post by Siriuscomp »

Hello,
I´m not very familiar with these devices but I´ve got this issue to solve at my work. Any help or advice would be much appreciated.

Odroid-XU3 (Android version: 4.4.4. Kernel version: 3.10.9) HDMI+USB connected with touchscreen LCD iiyama T2252MSC

ISSUE: When you start the device, while USB from LCD is connected, it goes into endless restart loop.
When you start the device and you connect the USB cable after its booted - works as intended.
When you start the device with any USB (mouse,kb,drive,etc.) and you connect the touchscreen after the boot - works as intended aswell.

This connecting-USB-after-boot workaround is not viable since the whole package will be built in the housing with no ease of access.
Any good soul willing to instruct me how to debug this or have any idea why this is happening? I will provide more information if needed.

Thank you!

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mad_ady
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Re: XU3 issue with touchscreen LCD on boot

Post by mad_ady »

I don't know if you're tied to Hardkernel's 4.4.4 or not, but I'd try voodik's Android 9 for xu4. There you can manually set the resolution and set disable_hpd to true in /odm/boot.ini and /odm/env.ini and see if that improves things.
The original 4.4.4 should have a boot.ini as well somewhere.
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Siriuscomp (Mon May 17, 2021 4:55 pm)

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odroid
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Re: XU3 issue with touchscreen LCD on boot

Post by odroid »

If you have a 1.8Volt compatible USB-UART adapter something link this, capture the raw console log to find a possible root cause of the endless restart loop.
https://www.hardkernel.com/shop/usb-uart-module-kit/
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Siriuscomp (Mon May 17, 2021 4:55 pm)

Siriuscomp
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Re: XU3 issue with touchscreen LCD on boot

Post by Siriuscomp »

Hello,
I dont have diag tools to my hand and different LCD type (with touchscreen) solved the issue.
Something driver related i guess but I have no way to backtrack it now. Sorry :(
So please close the thread.

Thank you guys anyways.

Have a nice day :P

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