Hi guys, I’m new here,
I’m having a very strange problem with Chalk Elec 10" LCD touchscreen (Shop | Chalkboard Electronics) and Jetson TK1.
When I plug the touchscreen USB, the touch only works for a few seconds and then it stops!
If I plug the USB and as soon as possible touch the screen, it works if I CONTINUALLY touch the screen. If I stop touching the screen (for only ~2 seconds) and start touching the screen again, it doens’t work anymore (until I unplug and plug USB).
The display worked fine with other devices (x86 computer with ubuntu and beagleboard with angstrom linux).
I checked the dmesg and it doesn’t show nothing unusual.
I also checked the input events of the touchscreen and the only thing that I notice is that the events of touchscreen stop to happen too.
Do someone have any idea of what is happening and if possible how I can fix this?
If is usefull:
The kernel messages of Jetson TK1 regarding Chalkboard touchscreen:
[ 322.795860] usb 3-1: new full-speed USB device number 5 using tegra-ehci
[ 322.844540] usb 3-1: New USB device found, idVendor=04d8, idProduct=f723
[ 322.851254] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 322.851440] usb 3-1: Product: HID Touchscreen
[ 322.857320] usb 3-1: Manufacturer: Chalkboard Electronics
[ 322.890872] input: Chalkboard Electronics HID Touchscreen as /devices/platform/tegra-ehci.0/usb3/3-1/3-1:1.0/input/input5
[ 322.892712] hid-generic 0003:04D8:F723.0004: input: USB HID v1.11 Device [Chalkboard Electronics HID Touchscreen] on usb-tegra-ehci.0-1/input0
Last messages of run of evtest on /dev/input5:
........
Event: time 946685752.952892, type 4 (EV_MSC), code 4 (MSC_SCAN), value d0042
Event: time 946685752.952892, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
Event: time 946685752.952892, type 1 (EV_KEY), code 320 (BTN_TOOL_PEN), value 1
Event: time 946685752.952892, type 3 (EV_ABS), code 0 (ABS_X), value 1096
Event: time 946685752.952892, type 3 (EV_ABS), code 1 (ABS_Y), value 679
Event: time 946685752.952892, -------------- SYN_REPORT ------------
Event: time 946685752.984503, type 4 (EV_MSC), code 4 (MSC_SCAN), value d0042
Event: time 946685752.984503, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 0
Event: time 946685752.984503, type 1 (EV_KEY), code 320 (BTN_TOOL_PEN), value 0
Event: time 946685752.984503, -------------- SYN_REPORT ------------
Regards,