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I have an issue when using the Raspberry Pi 7" Touch Screen Display connected via the ribbon cable (DSI Interface). The issue is that after most reboots, all I get is a blinking cursor in the upper-left corner of the screen.

This issue is intermittent.

What logs should I look at to diagnose this issue.

I do not have a space issue on my SD Card, it's only 10% full

I am on a Pi3B+

$ uname -a
Linux sandysclock 6.1.21-v7+ #1639 SMP Fri Mar 24 16:56:29 GMT 2023 armv7l GNU/Linux

$ cat /etc/os-release 
PRETTY_NAME="Raspbian GNU/Linux 11 (bullseye)"
NAME="Raspbian GNU/Linux"
VERSION_ID="11"
VERSION="11 (bullseye)"
VERSION_CODENAME=bullseye
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"

Cursor is blinking at irregular intervals

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    NOTE id you are running 6.1.21-v7+ you have performed something else - probably rpi-update "You should not use rpi-update on any system unless recommended to do so by a Raspberry Pi engineer"
    – Milliways
    Apr 5, 2023 at 6:53

1 Answer 1

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For my case, if I power-cycled the Pi, it worked, if I sudo reboot, I would experience the issue.

After some digging on the raspberry pi forums, I found what I think may be the answer:

edit the /boot/config.txt file and comment/remove:

display_auto_detect=1

and add/ensure these two line are present:

dtoverlay=vc4-kms-v3d
dtoverlay=vc4-kms-dsi-7inch

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