Questions tagged [hdmi]

HDMI stands for High Definition Multimedia Interface. Along with the Composite RCA, HDMI is one of the devices' two video outputs. It provides high quality digital video.

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803 views

Elecrow 7" HDMI screen reports No Signal

I'm attempting to get an Elecrow 7" HDMI LCD touchscreen (Amazon UK) to work with my Raspberry Pi 3 B+. Upon following the instructions enclosed with the screen, all I see is "No Signal". The ...
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8answers
4k views

Can RPi2 be used as an IP cam viewer?

I want to monitor my IP cam on my TV (both set to 1920 x 1080p). Since the IP cam uses ethernet and the TV has HDMI, I'm hoping my RPi2 will be a suitable interface. At this point, I'm unsure of my ...
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3answers
4k views

Pi won't show anything on VGA screen

I just bought a Raspberry Pi on Adafruit website with this HDMI<->VGA cable to plug it on my second monitor. The problem is it doesn't show anything on the screen, it's totally black. So I tried on ...
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2answers
4k views

Detect HDMI and Start GUI

We build an applications that supports a server mode and a GUI mode. Now the XServer and the application should start, if a HDMI Cable is connected otherwise it should only run the server. So whats ...
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2answers
302 views

Sending from headless Raspi to HDMI screen [duplicate]

I'm working on a small project and I need my raspberry pi (model 2B, rev a01041) to send a very simple image to a little screen (probably 10x5cm). Unfortunately, I've always thought I'd never have ...
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19 views

Should HDMI 'overscan_*' adjustments act independent of each other?

Should HDMI config.txt overscan_* adjustments act independent of each other? If not, what's happening? ... what would be the process to make predictable adjustments? For example, if overscan_left &...
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2answers
504 views

No monitor input using a HDMI to DVI adapter

Did I just buy a crappy HDMI to DVI adapter? Is my monitor too old? It's from, like, 2009, but it has a dvi-d port. The HDMI works fine through all this... I can pull the plug, put it in my TV and RPi ...
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0answers
33 views

how to connect my raspberry pi to pc which has no hdmi port but a 5 usb port

I am not to find out how to connect rasberry pi to my pc which has no HDMI port Any suggestions please . Thanks
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1answer
520 views

Sound is being cut off

On the raspberry pi connected to an hdmi TV, any command that emits sound has the first two seconds of audio cut off. Numerous options have been enabled in config.txt. How do you make it play audio ...
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1answer
55 views

Pi3 freezes on boot when display_rotate=1

I've been struggling with an issue with my Pi. I have a 2560 x 1440p HDMI screen that i've been trying to get to work. After getting the HDMI timings and settings from the manufacturer it shows the ...
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0answers
82 views

How do I capture and stream HDMI audio out to LAN

I have a RPi that is running videos with omxplayer and outputting to my tv. HDMI video and audio out work just fine, but I would additionally like to stream only the audio to my network (via RTP or ...
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2answers
767 views

No HDMI out displaying after boot up screen

I normally use VNC to connect to my Pi so I have not used the HDMI out in the past couple of weeks. When I first set up my Pi I did it using the same display and HDMI cable I am trying to use now (and ...
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71 views

No login prompt on HDMI console

I have a minimalistic buildroot build on RPi2 and I was using the serial on PuTTY (UART pins connected via USB) to log in as root. However, I don't see an login prompt on my monitor when I connect ...
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1answer
1k views

A working HDMI switch for Raspberry PI 3?

I have a Pi 3 and regular desktop computer with a single (DVI input) monitor. The desktop and Pi both have HDMI out for video. I use an HDMI > DVI cable to connect whichever device I want to use to ...
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0answers
25 views

Is it possible to adjust the backlight of a DELL U2414H monitor connected via HDMI?

I have a magic mirror I'm building that has a RPI at it's heart but even with the screen blanked at night, I can see the backlight glowing. Is there any way to adjust backlight brightness via the ...
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23 views

How to extend desktopacross to HDMI panels HDMI only

So with two waveshare 7" touch panels HDMI panels, an HDMI splitter and a raspberry pi zero w, I can mirror the display. I am not sure how to extend the screen across two HDMI panels. Does anyone ...
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0answers
27 views

Ethernet speed: Screen ON vs screen OFF

I've a Raspberry Pi 3 B+ with Ubuntu 18.04 installed. With an SSH connection with my Kubuntu PC, the transfer is good (4.5Mo/s) when RPi's screen is OFF (via xset dpms force standby) but if the RPi's ...
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1answer
1k views

Detect TV remote buttons being pressed with CEC client

My TV supports CEC and is connected to my Raspberry Pi with HDMI. I've installed cec-client on the Pi and followed this tutorial, but it only explains how to turn the TV on and off with the Pi. What I ...
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1answer
399 views

PWM via GPIO to trigger a MAPIR Camera

I am currently trying to trigger a MAPIR NDVI Camera with a PWM Signal. The camera is connected via this HDMI trigger cable. The white wire is connected to GPIO PIN 17, the black wire is connected to ...
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0answers
18 views

How do I stop my HDMI going off

for some reason, after a while the screen connected to my RPI 3B+ goes off, and stays off, until I unplug it and plug it back in again. I only run in console mode, and running alt+F[1-4] does nothing,...
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0answers
258 views

HDMI port is not working

I have been using an RPI3B+ for around 2 months . I used it remotely most of the time. Recently, when I was trying connect it with a monitor via HDMI to VGA converter , it didn't work at all. I ...
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3answers
109 views

Video output filter

I would like to be imbed a filter in the Pi’s HDMI output such that pixels are slightly rearranged. Specifically, I’m after a retro pincushion effect ([ ] -> ( )). I need it to be active even in the ...
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34 views

Weird output on 10.1" HDMI/USB touchscreen (Waveshare)

I have an HDMI+USB 10.1" screen connected to Pi. When used only HDMI is work fine but when pluged usb (touch) the display weird output.
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0answers
27 views

My raspberry pi 3+ suddenly stopped displaying

I've been using this raspberry pi for months to run LibreELEC to run Kodi. One day it didn't let out a HDMI signal. I no longer am able to a HDMI signal at all, my SD card is fine, I even reinstalled ...
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1answer
73 views

HDMI Screen interference and intermittant blinking

OK, Befote I describe this issue. Here's the setup.. RPi3B+ with external USB HD boot, The PSU is a TracoPower (professional) 5A PSU. The RPi power LED is not blinking nor lightening symbol on screen. ...
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1answer
2k views

How to Connect Raspberry Pi 3 to Laptop via Ethernet Cable

How do I display Raspberry Pi 3 screen onto laptop? I followed instructions to set up Raspberry Pi here, https://projects.raspberrypi.org/en/projects/raspberry-pi-setting-up I got up to here, https:...
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0answers
56 views

Unable to get HDMI connection via Raspberry Pi 3 B+

I have a Raspberry Pi 3 B+ model and a FLATRON W20437 LG monitor along with a 5V 2.8A Power Supply and a keyboard. After I load the contents of Raspbian OS with stretch on the SD Card (32 GB Samsung ...
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1answer
262 views

How can I switch the TV to the Pi's HDMI input on a key press/mouse click?

I've got a TV with an Apple TV, Pi, and a PS4 plugged into it. Both the Apple TV and the PS4 switch to their HDMI inputs when I click the remote or turn the controller on. How can I achieve the same ...
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2answers
911 views

Is it safe to use an unpowered HDMI to VGA converter on Raspberry Pi 3?

I know there are a lot of questions similar to mine and this question may be regarded duplicate, but I believe my question is different. As you may know most of questions are concerned about using an ...
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0answers
60 views

EDID problem with different monitors

I've got 2 monitors I use with a pi. The HP monitor self identifies root@raspberrypi:/home/pi# tvservice -n device_name=HWP-HP_L1755 & it is happy with the preferred hdmi settings root@...
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2answers
222 views

Raspbian Stretch lite doesnt send HDMI signal on second boot

I have installed the most recent Raspbian Stretch lite (release: 2018-11-13) to a SanDisk ultra A1 micro SD card to use it for my Raspberry Pi model 3B. I connected a HDMI monitor and a USB keyboard ...
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1answer
348 views

DisplayPort converter HDMI for Raspberry Pi 3

I tried to use a DisplayPort converter to HDMI but, it did not work. I have my monitor with DP port and my RP3 with a HDMI. I am confused about so many resources on the internet that do not provide a ...
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0answers
124 views

SONY TV as Display / Monitor

Background: I have successfully used pi-3b+ to display on LG LED TV, New model Sony 4K LED TV. Requesting your support: The year 2011 SONY 40NX710 model is showing blank (No desktop / text-console). ...
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2answers
6k views

Force sound over 3.5mm jack and video over HDMI

I am building an application where the sound needs to be over the 3.5mm jack and video over HDMI. However, sometimes it does send the sound over HDMI and 3.5mm jack. And sometimes it just uses HDMI ...
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1answer
110 views

Can I connect two Raspberry Pis to one 5" Display via an HDMI switch?

I have two Raspberry Pis running very different systems. I want to build an enclosure so that I can use a single 5" display (Amazon link) for both Pis. The setup I'm envisioning would rely on an ...
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0answers
181 views

Raspbian Stretch doesn't show any display on boot

I installed the image of raspbian stretch (version: 9) on an SD card and mounted the card on the Raspberry Pi. On first boot the display came up and the initial setup was done. In addition to the ...
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29 views

Any difference between using HDMI versus composite for fbcp?

Is there any tangible difference at all between using composite video and HDMI to copy to a TFT with fbcp? It would be done with hdmi_force_hotplug=1 and hdmi_ignore_hotplug=1.
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1answer
105 views

Raspberry Pi Touch Screen - I can't do anything

So, I recently bought a UCTRONICS LCD 3.5 in. touch screen for the Raspberry Pi (I have a Raspberry Pi 3 with Raspbian Stretch), and attaching it and getting it to turn on worked just fine. I ...
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2answers
10k views

Raspberry Pi no signal to hdmi

This is the first time I've tried to use a raspberry pi, I bought a CannaKit that came preloaded with NOOBS. When I attempt to boot with the HDMI my screen says no signal, the HDMI output is correct, ...
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2answers
196k views

How do I force the Raspberry Pi to turn on HDMI?

I have a Raspberry Pi running Raspbmc connected through HDMI to a dumb HDTV. (Does not support HDMI-CEC). If I power on both the TV (both at source and display through remote) and Raspbmc at the same ...
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3answers
19k views

CEC wake up command

When I boot my Raspberry my TV gets woken up over CEC. Is there a way to send the wake up signal using shell so I could use cronjob to start my TV every morning at 7, for example?
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1answer
3k views

Raspberry Pi 3 Sound Not Working With HDMI

The sound simply doesn't work, I'm using HDMI on a large flat-screen TV. Earlier today I had it working with HDMI on a smaller TV that is not a flat-screen. I have heard that it may have something to ...
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0answers
20 views

No video on SV-3 instrument viewer

When I set the Pi (Zero) up with the required 640x480 60Hz mode in config.txt the SV-3 reports no signal. But if I plug a VGA Acer monitor in to the Pi and then unplug it, plugging in the SV-3 works! ...
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1answer
191 views

Pi 2 won't boot without touchscreen connected

Timeline of events: Installed a stable version of Raspbian, all systems work no real testing with the GPIO but HDMI and SSH work. Tested various GPIO pins for running fans and several pieces of ...
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1answer
357 views

Waveshare 4.3inch HDMI LCD shows blank white screen

I have a Raspberry Pi 3 model B running the latest version of Rasbian Stretch. Yesterday I've received my Waveshare 4,3 inch display. First thing I did was build it in my project, due to save height ...
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1answer
35 views

No HDMI Output on Raspberry Pi 2B

I am a complete beginner, an have been having some issues with a Pi 2B. I was helping my school librarian set up a message display. I got a Pi, downloaded the OS, and used Etcher to put it on a USB ...
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2answers
8k views

How do I force the correct screen resolution in /boot/config.txt?

I've recently set up a Retropie which I have plugged into my TV. If I have the right input selected on the TV before powering on the Pi, then the image looks crisp and wonderful. However if I turn on ...
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1answer
130 views

Missing L4 chip near HDMI port, not boot up and usb port no power output

My rpi work perfectly until I touch it, It not boot up then I found the L4 chip HDMI port is missing(I have touched HDMI port I think my fingernail pull it off...). I found that tiny chip in the box ...
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3answers
3k views

Raspbian Put monitor to sleep at night and wake in morning

I have my Raspbian running Chromium in kiosk mode and works nicely. However, I would like it to turn the HDMI display off at 10pm and wake it up at 7am. I could not find such a setting in Raspbian.
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0answers
50 views

Resolution problem in 5 inch screen

I have one 5" screen, when I connect it to my Raspberry Pi see like this: But when I connect it to my computer the screen works well: I tried with change the parameter in video section in config....