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Sauer

7" inch touchscreen freezing with Thinker S/BR

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Hello Everyone,

We are facing problems using Asus Thinker S/BR running Linaro with a 7 inch touchscreen which is connected by HDMI and using USB connection to transfer power and touch commands.
Currently we have the same problem in 4 different Asus Thinkers, which the screen is freezing. VIDEO attached.

We use this on smart lockers, which ALWAYS starts after a few weeks after finishing the smartlocker production and installation, so the smart lock leaves the factory working well.
We have changed all devices that compound the smart locker, including the Thinker to a Raspberry 4 or a fresh Thinker S/BR and it works well again.

Not sure that is the hardware itself, but something related to software, maybe a software automatic update, correct driver missed, file getting bigger, etc.


Thinker details
Distributor ID: Debian
Description: Debian GNU/Linux 9.13 (stretch)
Release: 9.13
Codename: stretch
Kernel: Linux 4.4.132+
Architecture: arm
Image: Tinker_Board-Debian-Stretch-V2.1.16-20200813

Could someone help us?

Thanks
 

Edited by Sauer

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hello @Sauer

what's the 7" touchscreen display? is it a rpi touch screen? and you're using hdmi connector instead of dsi, right?

whats the syslog looks like? may we check this?

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hello @Sauer

thanks for the info, to further the analysis it would be helpful to know:

1.     When the problem occurred, were display and touch both not working?

2.     When you rebooted the board, did it fix the issue? Or did it still persist?

3.     Have you tried reboot the board or unplug/ replug hdmi and usb cable instead of changing to another board when it’s not working?

 

from the logs we’ve seen usb being connected and disconnected, looks like the usb connector is broken, we’d suggest use another usb cable or panel to connect -- it's normal that cables get fraying over time. we'll keep looking into the issue though

Nov 26 12:05:51 tinkerboard kernel: [    4.653372] usb 1-1.3: USB disconnect, device number 4

Nov 26 12:05:51 tinkerboard kernel: [    5.075529] usb 1-1.3: new full-speed USB device number 5 using dwc2

Nov 26 12:05:51 tinkerboard kernel: [    5.178409] usb 1-1.3: New USB device found, idVendor=1a86, idProduct=e5e3

Nov 26 12:05:51 tinkerboard kernel: [    6.445379] usb 1-1.3: USB disconnect, device number 5

Nov 26 12:05:51 tinkerboard kernel: [    6.755533] usb 1-1.3: new full-speed USB device number 6 using dwc2

Nov 26 12:05:51 tinkerboard kernel: [    6.858572] usb 1-1.3: New USB device found, idVendor=1a86, idProduct=e5e3

Nov 26 12:05:51 tinkerboard kernel: [    7.981017] usb 1-1.3: USB disconnect, device number 6

Nov 26 12:05:51 tinkerboard kernel: [    8.425481] usb 1-1.3: new full-speed USB device number 7 using dwc2

Nov 26 12:05:51 tinkerboard kernel: [    8.527415] usb 1-1.3: New USB device found, idVendor=1a86, idProduct=e5e3

 

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Answers

  1. When the problem occurred, were display and touch both not working?
    When problem occurs, display keep working (on) and can be managed by remote access, mouse and keyboard keep working.

  2.  When you rebooted the board, did it fix the issue? Or did it still persist?
    In some smartlockers yes, it fix for a few hours/day, in others no fix at all.
  3. Have you tried reboot the board or unplug/ replug hdmi and usb cable instead of changing to another board when it’s not working?
    We did, curiosly when the remove the USB connector from the port and plugin again in the same port the problem remains, but when changing the port on the Thinker, the problem is solved. (temporaly) 

We have changed the USB cable for others options, with better quality and the problem remais. 
 

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hello @Sauer

we're still checking the issue, but from the logs and the information you've provided, looks like certain usb ports are not working properly -- this happens usually when the board is overheating -- do you by any chance have another touch panel to cross-examine? 

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