Version 0.9.0 vs. KeeToch 10.4” Monitor: "Input Not Support" Regression Issue

jm_

With version 0.8.1, RPI 3 models B and B+ work fine with a 10.4" KeeTouch monitor (model KOT-0104U-CA4P), but I am having the following problem when I use version 0.9.0: "Input Not Support".

This message appears a few seconds after the card is powered on. After that, the screen shows no images.

kalkov

Thanks for reporting. Is it a fresh installation or update?

jm_

@kalkov said:
Thanks for reporting. Is it a fresh installation or update?

Fresh installation.

kalkov

Please try to flash again & wait for at least one minute. Check if device reboots itself once or twice.

jm_

@kalkov said:
Please try to flash again & wait for at least one minute. Check if device reboots itself once or twice.

I waited for over 20 minutes. Nothing happened.

Some notes:

1. When the RPI is booted for the first time after flashing card:
   1.1. Coloured splash screen appears;
   1.2. Some system information appears on the screen;
   1.3. The monitor error message appears and then the screen goes completely black – and in over 20 minutes, nothing happened after that.

2. During subsequent boot attempts:
   2.1. Coloured splash screen not appears;
   2.2. No one system information appears on the screen;
   2.3. The screen goes black and the monitor error message: appears for 3 seconds, disappears for 3 seconds, and reappears for 3 seconds. After that, the screen goes completely black – and in over 20 minutes, nothing happened after that.

kalkov

Thank you for this information.
Is it possible for you to mount the sdcard on you PC (is it Linux or Windows?) and check the contents of the /boot/config.txt file?

jm_

@kalkov said:
Thank you for this information.
Is it possible for you to mount the sdcard on you PC (is it Linux or Windows?) and check the contents of the /boot/config.txt file?

Contents of rpi3's v0.9.0:

hdmi_group=2
hdmi_drive=2
hdmi_mode=87
hdmi_cvt=800 600 75
hdmi_force_hotplug=1

disable_overscan=1
disable_fw_kms_setup=1

dtoverlay=vc4-kms-v3d,cma-256
avoid_warnings=2

dtparam=sd_force_pio=on
dtparam=i2c1=on
dtparam=i2c_arm=on

dtparam=audio=on
audio_pwm_mode=2

initial_turbo=30
start_x=1
kernel=u-boot.bin

---

Contents of keto's v.0.8.1:

hdmi_group=2
hdmi_drive=2
hdmi_mode=87
hdmi_cvt=800 600 60 6 0 0 0
hdmi_force_hotplug=1
disable_overscan=1

dtoverlay=vc4-fkms-v3d,cma-256
avoid_warnings=2

dtparam=sd_force_pio=on
dtparam=i2c1=on
dtparam=i2c_arm=on

dtparam=audio=on
audio_pwm_mode=2

initial_turbo=30
start_x=1
kernel=u-boot.bin

---

Booting rpi3's v0.9.0 with the config.txt file from keto's v0.8.1

• Coloured splash screen appears;
• Some system information appears on the screen but stops at the following line.:

[ 24.xxxxxx] init: Starting service 'exec 12 (/system/bin/bootstat)' ...

Note: The "xxxxxx" indicates a number sequence that changes at each system startup, but the other information on the line does not change after reboot.