I have an issue with 7" Capacitive Touch Display parallel which is integrated in a machine.
Everything is working fine until somebody will clean the screen.
In some cases the touch controller will start “ghosting operations” wich never ends.
In this case a reboot of the machine is necessary.
I try to reproduce the situation in the office.
We use the the Colibri Imx6 with Iris Carrier and the touch display.
To exclude our software I use a unaffected Toradex Embedded Linux Reference Multimedia Image.
On the colibri ist start “evtest” to see the events from the touch.
When i wipe over the screen with a cloth it could happen that the “ghosting” starts.
“Evtest” shows me that the touch sends constant events with high frequency.
This situation will never stop until restart.
I also try with earthing the display, but it makes no difference.
Thank you in advance for any ideas what can help.