map7
Posts: 1
Joined: Wed Feb 15, 2012 2:52 am

Raspberry PI 7in touch not working in top & bottom

Mon Jan 06, 2020 2:53 am

I'm using the Raspberry PI 7inch v1.1 touchscreen on a Raspberry PI 3B+ with the latest firmware as of 06/01/2020. The problem I'm having is I cannot touch the screen within the top 55pixels or bottom 55pixels. I'm running in standard resolution in normal rotation.

I've tried installing buster from scratch on a fresh SD card, changed the ribbon cable, re-seated all ribbon cables on the display board, updated firmware to 4.19.88-v7+ and installed evtest and looked at the results. What I found in the results was I could touch all the way to the sides but no the top 55 pixels or bottom 55 pixels.

Top
: Event: time 1578276887.358071, -------------- SYN_REPORT ------------
: Event: time 1578276888.529130, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 104
: Event: time 1578276888.529130, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 679
: Event: time 1578276888.529130, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 55
: Event: time 1578276888.529130, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
: Event: time 1578276888.529130, type 3 (EV_ABS), code 0 (ABS_X), value 679
: Event: time 1578276888.529130, type 3 (EV_ABS), code 1 (ABS_Y), value 55

Bottom
: Event: time 1578276942.867778, -------------- SYN_REPORT ------------
: Event: time 1578276943.453301, type 3 (EV_ABS), code 57 (ABS_MT_TRACKING_ID), value 115
: Event: time 1578276943.453301, type 3 (EV_ABS), code 53 (ABS_MT_POSITION_X), value 742
: Event: time 1578276943.453301, type 3 (EV_ABS), code 54 (ABS_MT_POSITION_Y), value 425
: Event: time 1578276943.453301, type 1 (EV_KEY), code 330 (BTN_TOUCH), value 1
: Event: time 1578276943.453301, type 3 (EV_ABS), code 0 (ABS_X), value 742
: Event: time 1578276943.453301, type 3 (EV_ABS), code 1 (ABS_Y), value 425

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