you've read viewtopic.php?p=2346849#p2282997Hi all,
I can't seem to get this combination working.
Pi 4b, Offical POE and official Display 2 (7")
uname -a: (Legacy 32-bit)
Linux kiosk 6.12.47+rpt-rpi-v8 #1 SMP PREEMPT Debian 1:6.12.47-1+rpt1~bookworm (2025-09-16) aarch64 GNU/Linux
(I've also tried RpiOS 64-bit with the same result, no movement of cursor on desktop)
$ dmesg | grep Goodix
[ 4.844642] Goodix-TS 10-005d: supply VDDIO not found, using dummy regulator
[ 7.901514] Goodix-TS 10-005d: Error reading 1 bytes from 0x8140: -110
[ 9.949522] Goodix-TS 10-005d: Error reading 1 bytes from 0x8140: -110
[ 9.977489] Goodix-TS 10-005d: I2C communication failure: -110
[ 11.997773] Goodix-TS 10-005d: probe with driver Goodix-TS failed with error -110
$ dmesg | grep i2c
[ 1.255585] i2c i2c-22: Added multiplexed i2c bus 0
[ 1.255861] brcmstb-i2c fef04500.i2c: @97500hz registered in polling mode
[ 1.255940] i2c i2c-22: Added multiplexed i2c bus 10
[ 1.263986] brcmstb-i2c fef09500.i2c: @97500hz registered in polling mode
[ 3.418986] i2c_dev: i2c /dev entries driver
Interesting bits in config.txt:
#dtparam=i2c_arm=on
# Touch screen
dtoverlay=vc4-kms-dsi-ili9881-7inch
Anything else I'm missing?
Is there a BKM on how to get these three bits of hardware working harmoniously?
Regards,
Dave.
try with below added/changed
Code:
force_eeprom_read=0#display_auto_detect=1dtoverlay=rpi-poe-plus,i2cdtoverlay=vc4-kms-dsi-ili9881-7inchStatistics: Posted by aBUGSworstnightmare — Thu Nov 06, 2025 5:52 am