reTerminal DM display not lighting up or showing anything

Products & Technology Raspberry Pi
#1

I have a reTerminal DM, when first delivered a month ago it worked fine and I started on my project. Now I wanted to continue after testing it on Tuesday and on Saturday, the Display showed no light and no picture. I’ve tried multiple forum posts and the official wiki entry to troubleshootand so far all I know is:
-External Displays work
-everything else about the reTerminal seems to operate as expected

basically i’ve narrowed the problem down to the Display itself or some drivers, which i’ve had to comment out in config.txt to get the external Display running

#2

What system are you using? If it’s raspbian os, you can try installing the driver additionally again

#3

I am using Raspbian OS 64-bit. I’ve already reinstalled both drivers and OS multiple times

#4

Hi @Tocix77 ,
It is possible that ili9881d driver is not starting properly. :cry:

Could you send me dmesg log when blank screen?

#5

Here’s a google Drive link, the only way I found to send the whole thing

#6

Hello all,
I’ve got the same problem, I flashed my reTerminal DM with Debian version 12 (bookwork), first I tried te 64-bit version and then I followed the drivers update steps shown here:

But it din’t work, then I flashed the bookworm 32-bit version but it didn’t work either, Has any of you have had figured out how to solve this problem?

Thanks
Carlos

#7

Hi @carlos_sepulveda ,

It seems that the driver is not yet compatible with the latest bookworm.

1 Like
#8

make sure that your Raspbian operating system is properly with latest driver and firmware. Do this by running command sudo apt update in the terminal.

1 Like
#9

We are currently working on an urgent fix to ensure that everyone can use it normally. We apologize for the inconvenience and thank you for your patience.
If there are any new image or drivers, we’ll be sure to notify everyone in the various threads as soon as possible!

#10

Hi @Tocix77 ,
Sorry, too late.

I am concerned about the i2c bus error, but I can’t figure out the cause.

Please share these information with me.

  1. cat /boot/issue.txt
  2. uname -r
  3. uname -m
  4. dpkg --print-architecture
  5. cat /boot/firmware/cmdline.txt
  6. cat /boot/firmware/config.txt
  7. i2cdetect -y 1
  8. i2cdetect -y 3
  9. modinfo ili9881d
  10. lsmod | grep ili9881d
#11

I’m trying to compile a pretty basic Yocto image for reTerminal DM from scratch and I am also getting a black screen.

My dmesg shows a few instances of the following error:

[    4.290713] ili9881d-dsi fe700000.dsi.0: Couldn't get our reset GPIO

More info:

$ cat /boot/cmdline.txt
dwc_otg.lpm_enable=0 console=serial0,115200 root=/dev/mmcblk0p2 rootfstype=ext4 rootwait logo.nologo

$ cat /boot/config.txt
#sdtv_mode=0
#sdtv_aspect=1
#sdtv_disable_colourburst=1

#hdmi_safe=1

#hdmi_force_hotplug=1

#hdmi_ignore_hotplug=1

#hdmi_drive=2

#hdmi_ignore_edid=0xa5000080

#hdmi_edid_file=1

#hdmi_ignore_edid_audio=1

#hdmi_force_edid_audio=1

#hdmi_force_edid_3d=1

#avoid_edid_fuzzy_match=1

#hdmi_pixel_encoding=1

#hdmi_group=1

#hdmi_mode=1

#config_hdmi_boost=0

#hdmi_ignore_cec_init=1

#hdmi_ignore_cec=1


#overscan_left=0

#overscan_right=0

#overscan_top=0

#overscan_bottom=0

disable_overscan=1


#framebuffer_width=0

#framebuffer_height=0

#framebuffer_depth=16

#framebuffer_ignore_alpha=0


#display_rotate=0

#dispmanx_offline=0


#decode_MPG2=0x12345678

#decode_WVC1=0x12345678


#start_x=0

#disable_camera_led=1


#test_mode=0


#disable_l2cache=0

#gpu_mem=128

#gpu_mem_256=192

#gpu_mem_512=448

#gpu_mem_1024=944

#disable_pvt=1


#cma_lwm=16

#cma_hwm=32


#disable_commandline_tags=0

#cmdline=""

#kernel=""

#kernel_address=0x00000000

#kernel_old=1

#ramfsfile=""

#ramfsaddr=0x00000000

#initramfs initramf.gz 0x00800000

#device_tree_address=0x00000000

#init_uart_baud=115200

#init_uart_clock=3000000

#init_emmc_clock=100000000

#boot_delay=0

#boot_delay_ms=0

#avoid_safe_mode=1

disable_splash=1


#force_turbo=0

#initial_turbo=0

#temp_limit=85

#arm_freq=700

#arm_freq_min=700

#gpu_freq=250

#core_freq=250

#core_freq_min=250

#h264_freq=250

#isp_freq=250

#v3d_freq=250

#sdram_freq=400

#sdram_freq_min=400

#avoid_pwm_pll=1


#current_limit_override=0x5A000020

#over_voltage=0

#over_voltage_min=0

#over_voltage_sdram=0

#over_voltage_sdram_c=0

#over_voltage_sdram_i=0

#over_voltage_sdram_p=0


#max_usb_current=0


#dtparam=audio=off

#dtparam=i2c_arm=off

#dtparam=i2c_vc=off

#dtparam=i2c_arm_baudrate=100000

#dtparam=i2c_vc_baudrate=100000

#dtparam=i2s=off

#dtparam=spi=off

#dtparam=random=off

#dtparam=uart0=on

#dtparam=watchdog=off

#dtparam=act_led_trigger=mmc

#dtparam=act_led_activelow=off

#dtparam=act_led_gpio=47

#dtparam=pwr_led_trigger=mmc

#dtparam=pwr_led_activelow=off

#dtparam=pwr_led_gpio=35
# Enable I2C
dtparam=i2c1=on
dtparam=i2c_arm=on
# Enable UART
enable_uart=1
# Enable VC4 Graphics
dtoverlay=vc4-kms-v3d
# Enable USB host mode
dtoverlay=dwc2,dr_mode=host

dtoverlay=vc4-kms-v3d-pi4
dtoverlay=i2c3,pins_4_5
dtparam=spi=on
dtoverlay=reTerminal-plus
dtparam=i2c_vc=on

$  i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- --
20: -- UU -- -- -- -- -- -- -- 29 -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

$  i2cdetect -y 3
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: UU UU -- -- -- -- -- UU -- -- -- -- -- -- -- --
60: 60 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

$ modinfo ili9881d
filename:       /lib/modules/6.1.61-v8/extra/ili9881d.ko
license:        GPL v2
description:    Ilitek ILI9881D Controller Driver
author:         Maxime Ripard <maxime.ripard@free-electrons.com>
srcversion:     64519BAFC3817F4FED30CFB
alias:          of:N*T*Cgjx,gjx101c7C*
alias:          of:N*T*Cgjx,gjx101c7
depends:
name:           ili9881d
vermagic:       6.1.61-v8 SMP preempt mod_unload modversions aarch64

$ lsmod | grep ili9881d
ili9881d               16384  0

Any help would be appreciated.

#12

You can try turn off the re terminal completely and unplugging it from the power source. Then wait for some time and reconnect it.

#13

Hello.
Thank you all for your patience! We have updated the driver on GitHub. It has been tested on 32bit/64bit bookworm kernel 6.6 and it lights up the screen.

efe2799f8c173ee0523fddd2b510991e
efe2799f8c173ee0523fddd2b510991e2560×1920 300 KB

1 Like
#14

Unfortunately this has not resolved my issue. I did a clean install of OS and drivers and my Display still doesn’t do anything

#15

Sorry for the late answer, I was focusing on another project, here’s the requested info as the fix provided by seeedStudio sadly didn’t resolve the issue for me.
info.txt

#16

Hi @Tocix77 ,
Thanks for information.

The display driver seems to be loading correctly.
Could you send me the results of dmesg command?

#17

Hi @Tocix77 ,
I checked my reTerminal DM with the same OS and the display is working fine.
info.txt

I am concerned that there is a difference in the i2c1 response.

Your reTerminal DM:

pi@pi:~ $ i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

My reTerminal DM:

pi@raspberrypi:~ $ i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                         -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- UU -- -- -- -- -- -- -- 
20: -- UU -- -- -- -- -- -- -- UU -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --
#18

Hello, thanks for the update, I got a question, does the touch input works properly with 32bit/64bit bookworm kernel 6.6? I am asking this because I could recover my reTerminal DM by flashing Debian version: 11 (bullseye), kernel 6.1, the screen get lighted up but I couldn’t make the touch input work anymore.

Thanks

#19

Hello again, hoping this information helps someone, I flashed my reTerminal DM with version 64bit bookworm kernel 6.6 and followed the steps for drivers installation, it worked properly on the first try, screen and touch input both works properly.

1 Like