jultur
Posts: 2
Joined: Sun Jan 13, 2019 2:14 pm

Raspbian stuck on screen with cursor+black screen+yellow lightning during boot

Sun Jan 13, 2019 2:45 pm

Hi,

I have an issue with my raspberry pi 3 B+ running on Raspbian. Indeed just after trying to set up a 4 inch HDMI LCD screen in the following way :

-Adding these lines in the config.txt
Hdmi_group = 2
Hdmi_mode = 87
Hdmi_cvt 480 800 60 6 0 0 0
Dtoverlay = ads7846 , cs = 1 , penirq = 25 , penirq_pull = 2 , speed = 50000 , keep_vref_on = 0 , swapxy = 0 , pmax = 255 , xohms = 150 , xmin = 200 , xmax = 3900 , ymin = 200 , ymax = 3900
Display_rotate = 3

-git clone https : //github.com/waveshare/LCD-show.git

-and running the file LCD4 - 800x480 - show

At this point the board reboot and since then my problems started :

The boot start correctly until the last line on screen :

Code: Select all

Starting Terminate Plymouth Boot Screnn...
Image

After that I'm stuck with that screen :

Image

And the red and green LEDs are blinking.

It's a problem really simillar to this one :

viewtopic.php?t=128307
But no answers are working for me.

Personnaly I think it's a problem with the memory during the installation of the LCD driver but I have no idea how to solve it. I really need to get it working without wiping all the memory, beacause I have really important files for a project inside.

Thank you for the help!

fruitoftheloom
Posts: 18869
Joined: Tue Mar 25, 2014 12:40 pm

Re: Raspbian stuck on screen with cursor+black screen+yellow lightning during boot

Sun Jan 13, 2019 4:25 pm

jultur wrote:
Sun Jan 13, 2019 2:45 pm
Hi,

I have an issue with my raspberry pi 3 B+ running on Raspbian. Indeed just after trying to set up a 4 inch HDMI LCD screen in the following way :

-Adding these lines in the config.txt
Hdmi_group = 2
Hdmi_mode = 87
Hdmi_cvt 480 800 60 6 0 0 0
Dtoverlay = ads7846 , cs = 1 , penirq = 25 , penirq_pull = 2 , speed = 50000 , keep_vref_on = 0 , swapxy = 0 , pmax = 255 , xohms = 150 , xmin = 200 , xmax = 3900 , ymin = 200 , ymax = 3900
Display_rotate = 3

-git clone https : //github.com/waveshare/LCD-show.git

-and running the file LCD4 - 800x480 - show

At this point the board reboot and since then my problems started :

The boot start correctly until the last line on screen :

Code: Select all

Starting Terminate Plymouth Boot Screnn...
Image

After that I'm stuck with that screen :

Image

And the red and green LEDs are blinking.

It's a problem really simillar to this one :

viewtopic.php?t=128307
But no answers are working for me.

Personnaly I think it's a problem with the memory during the installation of the LCD driver but I have no idea how to solve it. I really need to get it working without wiping all the memory, beacause I have really important files for a project inside.

Thank you for the help!

The Yellow Warning is under-voltage:

https://www.raspberrypi.org/documentati ... g-icons.md

Use the Official and recommended Power Supply:

https://www.raspberrypi.org/products/ra ... er-supply/


The Waveshare instructions support Raspbian Stretch ?? if it is a genuine Waveshare product then what model ??

https://www.waveshare.com/product/mini- ... splays.htm
adieu

My other Computer is an Asus CS10 ChromeBit
https://www.asus.com/uk/Mini-PCs/Chromebit-CS10

jultur
Posts: 2
Joined: Sun Jan 13, 2019 2:14 pm

Re: Raspbian stuck on screen with cursor+black screen+yellow lightning during boot

Sun Jan 13, 2019 6:22 pm

Thanks for the answer !

I have also read that this lightning logo can appear due to boot problems. The board is powered by my PC and I used the same configuration with an other board and it was working, that why i'm not sure if it's a supply problem.

And for the screen I'm using this one :

https://www.waveshare.com/product/mini- ... mi-lcd.htm

User avatar
davidcoton
Posts: 3551
Joined: Mon Sep 01, 2014 2:37 pm
Location: Cambridge, UK

Re: Raspbian stuck on screen with cursor+black screen+yellow lightning during boot

Sun Jan 13, 2019 9:40 pm

Your PC's USB may be limited to 500mA. The Pi3B+ can draw over twice that.
Get a proper 5V-5V2 2A5 PSU (not a repurposed charger), preferably the "official" 5V1 2A5 PSU which is known to be of good quality.
Make sure the cable, if separate, is adequate -- at least 22AWG and preferanbly 18AWG wires (smaller number is thicker).
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