@Zing , I apologize to you.
The problem is in fact on television.
I put other devices on and the problem persists.
I'm sorry and thanks for your help.

@Zing , I apologize to you.
The problem is in fact on television.
I put other devices on and the problem persists.
I'm sorry and thanks for your help.

tvservice -s
state 0xa [HDMI CEA (5) RGB lim 16:9], 1920x1080 @ 60.00Hz, interlaced

In a config.txt now :
disable_overscan=1
hdmi_group=1
hdmi_mode=5
hdmi_drive=2
config_hdmi_boost=0
all other parameter are coment, with #.

In recalbox.conf:
global.videomode=default
system.es.videomode=CEA 5 HDMI

The problem still happens.

tvservice DMT return

I am not re-config the recalbox, with your tips yet.

@caobianco said in Strange screen behavior, signal lost:

Now i change the config.txt value to :

in tvservice, the return is :
tvservice -m CEA
(prefer) mode 5
(native) mode 16

so, i change the value in config.txt to :
hdmi_group=1
hdmi_mode=16

and i change recalbox.conf to
global.videomode=CEA 16 HDMI

The problem stil in there.

Do you have any ideas ?

@Zing said in Strange screen behavior, signal lost:

Realize that normally you only need to modify the lines:

Man, thanks for your response.

Well, i run a new setup, from zero

And, the signal only appears in my VGA monitor

In this monitor, the problem never happens...

Now i change the config.txt value to :
hdmi_group=1
hdmi_mode=5

My TV is a Sansung full HD un46d5500.
1920 x 1080 pixels, 120 Hz.

I change :

• hdmi cable.
• raspberry power supply.
• install a new recalbox.

But the problem persist.

Hi guys, i have a screen problem :

https://www.youtube.com/watch?v=rm3zm6Kvjhk

at 5 or 10 seconds, this is happend.

my hardware :

Raspberry PI3
Memory Card 64 GB

Software

Recalbox 7.11

I change some points, in config.txt :

• hdmi_safe=1
• hdmi_group=1
• hdmi_mode=20
• config_hdmi_boost=11
• hdmi_force_hotplug=1
• sdtv_mode=3

i see this in :
https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

in recalbox.config :

• system.es.videomode=CEA 31 HDMI
• global.videomode=CEA 31 HDMI

but here, i am using 20/16/5 but i am not have sucess.

Do you have any ideas ?

Sorry, my english is very bad, i know.