[FaultyTouch]

I didn’t miss the sudo. I’m logged in as the root user.

I’m assuming you meant to edit /boot/config.txt. Doing so results in no change for the vcdbg command, and still no data while running evtest.

[FaultyTouch]

#vcdbg log msg gives:

Unable to determine the value of __LOG_START
Unable to read logging_header from 0x00000000

cat /boot/config.txt gives:

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1
# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
#disable_overscan=1
# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16
# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720
# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1
# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1
# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2
# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4
# uncomment for composite PAL
#sdtv_mode=2
#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800
# for more options see http://elinux.org/RPi_config.txt
gpu_mem=16
dtparam=spi=on
dtoverlay=piscreen,speed=16000000,rotate=90

cat /etc/modules gives:

# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
# Parameters can be specified after the module name.
snd-bcm2835

Running evtest starts the program, but tapping on the screen generates no data.

[FaultyTouch]

Hi Mark,

Thank you for the prompt response!

Unfortunately, I’ve already tried with the prebuilt image. It gives me the same issue.

[Author]

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