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.
573
questions
1
vote
1answer
2k views
Reduce power consumption script
I have read on this blog that you can reduce power consumption:
https://www.jeffgeerling.com/blogs/jeff-geerling/raspberry-pi-zero-conserve-energy
By disabling the HDMI port.
He says that I should ...
0
votes
1answer
389 views
Software adjustment of gamma/brightness settings in Raspbian
I am trying to find a way to control the apparent brightness of my external screen on Raspbian Stretch.
In my situation, there is no need to actually control the backlight, as I only want to change ...
0
votes
1answer
791 views
raspberry pi with 4k screen @1080p resulotion
I'd like to use 4k screen with RPi. I know that RPi can't handle 4k resolution so that is why I'd like to set resolution to 1080p. Screen will be playing videos/images (both prepared at 1080p) and my ...
1
vote
0answers
25 views
Using RasPi as WiFi
I have a projector installed at my ceiling. I cannot easily run a cable from the projector to my computer. Therefore I'd like to be able to stream movies to the projector using the raspi, while still ...
0
votes
0answers
6 views
Full KMS causes blank screen on Pi 3 Compute Module
I am currently using a Pi CM3 on a custom PCB.
The board boots fine with a desktop using fake KMS, but when using full KMS, no image is present. Boot image appears but once at desktop there is no ...
0
votes
1answer
17 views
Why is my input source not changing when I send the <Active Source> message via CEC-Client?
Problem/Question
When I use CEC-Client to send the active source command to switch the TV input to a particular source, nothing happens. What am I doing wrong?
Environment
I have a Raspberry Pi 4 ...
0
votes
1answer
152 views
Control GPIO from HDMI V sync
My Project on a Raspberry Pi 2 with Raspian stretch.
I want use a GPIO pin to drive 3d shutter glasses (glasses hacked to receive 0 _3V square wave)
Video playing on the HDMI port and A Pin goes on ...
3
votes
2answers
2k views
Switching TV to DVI input via HDMI / CEC
I have a Samsung TV / monitor with HDMI, DVI, VGA inputs and more. My Raspberry Pi is connected to the HDMI input, my computer to the DVI input. With
echo as | cec-client -s -d 1
executed on the Pi, ...
5
votes
1answer
1k views
Getting the active source via HDMI-CEC doesn't seem to work
I am very new to HDMI-CEC. I have a Pi3 and a Pi2 connected to a TV's two HDMI ports. If I run:
echo scan | cec-client -s -d 1`
I get the following output:
OpenELEC:~ # echo scan | cec-client -s -d ...
0
votes
0answers
40 views
Is there a way to enable VSYNC on RPI4?
I am using Raspbian Buster with default LXDE/Openbox configuration. Screen tearing when moving windows around or watching videos is very noticeable. Is there a way to enable VSYNC on RPI4 using HDMI?
0
votes
2answers
34 views
LCD VGA Display goes blank on use of usb mouse on Pi 3
I have an old VGA monitor (Xerox XM7-19w which has its prime resolution as 1440x900 (i.e. WXGA) at 60Hz. I've connected my recently purchased Pi 3 (and recently purchased sdcard with Rasbian on it) ...
3
votes
0answers
54 views
Does the Raspberry Pi 4 support HDCP?
I could not find a definitive answer anywhere in the specs or on the web.
I am looking for a device that will allow me to play Amazon Movies (and those of other platforms) in 4K.
Thank you!
0
votes
0answers
33 views
HDMI man in the middle
I want to build a screen grabber that sits between HDMI devices - like a television - to capture screenshot and send to a server every interval.
Before I buy hardware I do not need, can it be dome ...
1
vote
0answers
294 views
How to configure duplicate screen on a Pi?
I have a Raspberry Pi 2 connected with a TouchScreen.
I also connect another external display via HDMI.
Goal
I've been trying to make my external display show as duplicate mirror the one on the ...
-1
votes
1answer
67 views
HDMI Audio not working with Raspberry 3 B and Raspbian Buster
Volume control says "No volume control on this device"
When trying to force output to 3.5 or HDMI in raspi-config, it fails with error "There was an error running option..."
When running update in ...
2
votes
0answers
29 views
Turning on/off specific HDMI port on Pi 4
According to the docs, vcgencmd now can specify which hdmi port as a second argument for raspberry pi 4, so I did sudo apt update then sudo apt upgrade
but vcgencmd display_power 0 7 returns error=2 ...
0
votes
0answers
140 views
What does amixer cset numid=3 3 do?
In order to solve missing audio via HDMI with Raspberry Pi 4B (Raspian Buster) I came across
amixer cset numid=3 2
which didn't do the trick for me. But randomly I checked numbers from 0 to 4 and ...
0
votes
1answer
38 views
No HDMI after retropie restart, every time, multiple micro sd cards?
So I install the latest image of retropie, and boot it up on my rpi3. Plug it into my hdmi arcade cab, connect to wifi, add games from pc via wifi, force audio to 3.5 or I'd have no sound, restart, ...
2
votes
2answers
67 views
how to setup and mirror two visual screen (a) touch 3.5 touch screen in general 40 pin connector and (b) hdmi 1 over TV?
I have new 4GB Rasberry Pi 4. I would like to mirror a touch screen,3.5 inch TFT LCD over 40 point connector and HDMI 1 over TV. I could not connect both and mirror together. Sorry I new to Rasberry ...
0
votes
0answers
28 views
(Pi4) No Display when in OTG mode unless HDMI_safe=1
Im officially stumped. I have connected my Pi4 to my PC via USB to USB-C for OTG connection. Whenever I boot with the normal PSU to the USB-C port on the Pi4, everything boots correctly (display and ...
1
vote
1answer
88 views
Video playback on Raspberry Pi 3
I have a raspberry pi 3 connected to one of my TV's HDMI inputs. I've installed VLC, but videos won't play. The image will hang and the audio will continue to play in the background. Regardless of ...
2
votes
0answers
37 views
How to split a display into many and access all the screen
I'm trying to split the screen in raspberry-pi.
and access each screen for each display
I want the multiple layer in a single screen. Eg. my output screen resolution is 1024x720 in that i have to ...
5
votes
6answers
6k views
Raspberry Pi 3 HDMI Not working
I have raspberry pi 3 model b and windows 10 PC. I downloaded Raspbian instead of NOOBS in order to be able to modify the config.txt file. But I'm still having the same problem, that my display doesn'...
0
votes
1answer
27 views
How do I list the supported resolutions of my HDMI display/monitor?
How do I list the supported resolutions of my HDMI display/monitor?
On the raspberrypi website, there is a complete list of modes supported by raspberrypi but it does not list only the ones supported ...
0
votes
1answer
263 views
Pi Zero HDMI Problem
I have problem with connecting pi zero to tft screen over hdmi.
I tested hdmi cable, config file(same sd card) and tft screen with Pi 3B,
I tested micro hdmi adapter(which connected to pi zero) with ...
1
vote
7answers
12k views
Raspbian, no audio HDMI, have tried all the troubleshooting I can find
I know this is a noob question, so I apologise in advance!
I've been googling for hours, have ran through all the steps for troubleshooting sound through HDMI; un-commenting the config file sound ...
0
votes
1answer
62 views
First time setup - no HDMI output
At first install I get no output to my monitor at all. Have tried two different monitors and two different HDMI cables. Black screen. I assume this must be a hardware error, or have I missed something?...
0
votes
1answer
37 views
Monitor goes black when unplugging the ethernet cable
My Raspberry Pi B+ is working well except: the HDMI only seems to work if the ethernet cable is plugged in. If I remove the ethernet cable the monitor goes black. I plug the cable back in - monitor ...
0
votes
0answers
18 views
Raspberry Pi goes blank after 10 mins or so, until the resolution is changed. and repeats
so I just got a really cheap and free desktop monitor from work, that's like 1280x1024 resolution.
Now when I first connected the pi to the monitor it failed to boot at all... which was weird, but ...
0
votes
1answer
111 views
Resolution Issue
When I connect my raspberry pi to a monitor through an HDMI cable, the resolution gets lower at the boot of the desktop UI, but when I click on start menu it turns to 1920×1080. Sometimes it randomly ...
-1
votes
1answer
84 views
Raspberry Pi 4 touchscreen misbehaving when using a secondary monitor
First of all I recorded a video on the phenomenon, this might be more descriptive than my words: video of the problem
I have a project in which I have to use two displays: one that is the 7 inch ...
1
vote
1answer
4k views
startx — -layout HDMI -layout TFT # at the same time?
This verbiage implies, if you want a desktop on both heads of a Pi(2) with a PiTFT hat, you just startx each desktop:
startx -- -layout TFT &
startx -- -layout HDMI &
Various combinations of ...
3
votes
0answers
188 views
Raspberry Pi 4: Console on first HDMI screen, X11 on second HDMI screen
The new Pi 4 has two HDMI Ports. After booting Raspbian, the first screen (HDMI-0) should display the console and the second screen (HDMI-1) should display the X11 desktop.
My first thought was ...
0
votes
1answer
1k views
HDMI: The current input timing is not supported for Raspberry PI3
While connecting to Raspberry Pi 3 to Monitor via HDMI cable, I am getting following error on the monitor.
Error: "Current input timing is not supported by the monitor display. Please change your ...
0
votes
1answer
58 views
Pi 3 Model B doesn't display anything
After setting up Jesse 09/23/16 on 8GB SD Card, the Pi booted fine and I played around with the X-Windows environment. Upon "Shutdown", and power recycle, there is no HDMI display. I do get the ...
0
votes
1answer
92 views
Bleeding over edges of Samsung TV, cant see menu bar
For some reason my Raspberry Pi 3b is bleeding off the edges of the screen, and I am unable to see my menu bar. This happened after a reboot, and wasn't happening before.
I am using HDMI as my input/...
0
votes
0answers
73 views
Raspberry Pi 4 drops hdmi connection for a second at boot tv reconnects, drops signal again after playing any type of video
I've been having a terrible experience with my raspberry pi 4 4G, with regards to a strange problem that's occurring. I am currently running NOOBS with raspbian/libreelec, and everytime after entering ...
1
vote
1answer
93 views
Raspberry pi (running ubuntu 14.04) citrix problem
I have a problem running Citrix receiver on my raspberry pi 2B running Ubuntu 14.04 lxde custom spin off (it litteraly only has the core essentials of LXDE and firefox that's it oh and lightdm)
It ...
0
votes
1answer
475 views
Force 1080i video at 59.94fps
I'm trying to set up a Raspberry pi to output video to an ancient TV transmitter which requires HD interlaced video at 59.94fps.
The Pi HDMI output is connected to a BlackMagic micro HDMI to SDI ...
1
vote
1answer
170 views
SPI vs HDMI power consumption
I'm using a Pi Zero in a portable project and wondered if there were any power savings to be made by using an SPI display over a HDMI one or vice versa.
0
votes
1answer
273 views
Enable audio over HDMI on Raspbian Jessie with AV Receiver
I am attempting to connect a Raspberry Pi Zero W with HDMI to an AV Receiver (Pioneer VSX-820). My interest is exclusively in playing sound over the speakers connected to the receiver, although there ...
0
votes
3answers
972 views
RPi Zero vga display problem
RPi not showing up display when connected to mini hdmi to hdmi converted and then to hdmi to vga converter.
both the converters are tested, working... if its not possible then how to access rpi zero ...
1
vote
1answer
5k views
Testing CEC on Raspbian
Just installed Raspbian on a 3 B connected to a TV that supposedly supports CEC (LG 47LD450), but struggling to find any info on how to test CEC on Raspbian.
I want to confirm that it works, or ...
0
votes
1answer
124 views
Can “normal” app change resolution/refresh on the fly
I want to write a Pi app to test the ability of American HDTVs to display 720p50, 1080i50, 1080p50, and other assorted modes, like the 59.94 & 60fps variants of 720p60 and 1080p60 via HDMI. Few/no ...
1
vote
1answer
262 views
Display controller for HDMI shows no signal only for Raspberry
I'm bought a (notebook) display LP171WP4 (TL)(01) and a display controller. Both are working if I connect it to my Macbook via HDMI. But with the Raspberry PI 3 B it doesn't work. The display is on ...
8
votes
10answers
42k views
No video on HDMI?
I just got my Raspberry Pi in the mail, and went to hook it up to my TV with an HDMI cable. I plugged in the cable (known to work with my cable box), a keyboard, and then power. A light comes on the ...
0
votes
1answer
242 views
Using a Raspberry as on-boot auto media player from USB over HDMI to TV, changing files from network
There's a TV where I work, and we show products videos to the clients, so I was wondering if we could connect a Raspberry to the TV, and change the files on the USB Drive from the network, over WIFI, ...
0
votes
1answer
153 views
monitor no hdmi signal
I've installed ubuntu classic server 16.04 (Rasberry Pi 3 edition) found here https://ubuntu-pi-flavour-maker.org/download/ on Rasbperry Pi 3 b and everything is working as expected when I ssh into it....
0
votes
1answer
762 views
Raspberry Pi custom resolution issues for 12.3" 1920x720 LCD
I have an LCD from a Chonese manufacturer. 12.3", resolution is 1920x720 pixels. When I set the following in the config.txt file I get some white stuff at the bottom of the screen. Any ideas why?
...
2
votes
1answer
157 views
Output to unorthodox HDMI screen
I have a little bit of an issue displaying the Raspberry Pi on a 1280x272 screen. The monitor is about 9" and has a HDMI input.
I have tried connecting it before startup, and it doesn't seem to work....
