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Raspberry Pi Zero with Ethernet Over HDMI

No, the Pi Zero does not support ethernet over HDMI. Unfortunately the schematics for the Pi Zero are not available (edited: an overview schematics is available now, see updated information below). ...
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28 votes
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Turning 'tvservice' on and off leaves screen blank

tvservice is not the best to turn off and on the screen. Much better way to do this (found after a day of searching) is using vcgencmd command (more on this here). vcgencmd display_power 0 turns off ...
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26 votes

How do you make the HDMI hot-pluggable on a Pi?

In /boot/config.txt: hdmi_force_hotplug=1 hdmi_group=1 hdmi_mode=16 Those are explained here: https://www.raspberrypi.org/documentation/configuration/config-txt/video.md There is also this: https:/...
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23 votes

Keep HDMI off on boot

There is a few things you can try: 1) Edit /etc/rc.local and add the following lines above exit 0: # Disable HDMI /usr/bin/tvservice -o this will turn off the display, but only somewhere during the ...
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18 votes
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Can Raspberry Pi 3 do 4K Video?

The best information I can find suggests that it's possible to output 4K resolutions, but at fairly miserable frame rates. The Pi 3 has the same GPU as the Pi 2, so the information should still be ...
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16 votes
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Is it possible to connect to a display port?

That cable is most likely a DisplayPort-to-HDMI cable not a HDMI-to-DisplayPort cable (mind the direction). While there are DP ports able to support HMDI signals (DisplayPort Dual-mode) HDMI does not ...
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14 votes
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The purpose of the orange tape on the HDMI connector

I believe the tape is useful for manufacturing using a vacuum based pick and place machine. The machine can't pick the parts up if they're full of holes. Removing it shouldn't do any harm.
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11 votes

Detect HDMI and Start GUI

There's a command line utility, tvservice built into Raspbian that will tell you the state of the HDMI. To detect the full state, you can use the command: tvservice -s. On my RPi this currently ...
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10 votes
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RPI3B+: What are the four components below the HDMI connector called?

While the official Raspberry schematics don't tell a thing about these components we can learn from the picture of the PCB that they are connected to the paired pins 1 and 3, 4 and 6, 7 and 9, 10 and ...
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9 votes
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Multiple Display Screens

The Raspberry Pi Foundation claims unambiguously that a VGA adapter on the GPIO header "means you can use it as a secondary monitor alongside HDMI" (from here). You should certainly be able to do ...
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9 votes

RPi zero ethernet connection via HDMI port using a HDMI to RJ45 adaptor

No. HDMI to Ethernet adapters are used to send HDMI display data over an Ethernet cable, rather than network data over HDMI. This won't work.
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8 votes

How to disable local terminal showing through when playing video

omxplayer now has an option to set the background to black. omxplayer -b It works both on the terminal and in X. This feature should be in the current version available in raspbian.
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  • 81
8 votes

Calibrate overscan settings

I used the following to calibrate my display https://github.com/ukscone/set_overscan I found this on http://www.raspberrypi.org/forums/viewtopic.php?p=305797&sid=4fe5fc284854fe3723841f79ea2c6546#...
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8 votes

How to turn Raspberry Pi off when HDMI is disconnected?

Try verifying the output of the file: /sys/class/drm/card0-HDMI-A-1/status The part card0-HDMI-A-1 may be a little different (verify the parent directory for the correct file) and the content should ...
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8 votes
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How to reinitialize HDMI without rebooting the RPi

To /boot/config.txt add: hdmi_force_hotplug=1 You will have to reboot to make that effective (this applies to anything in config.txt), but the display should work now if you plug it in after boot. ...
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7 votes
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How to enable sound on HDMI?

There's another setting in your /boot/config.txt that affects sound: hdmi_group If you want sound over HDMI, config.txt should have both: hdmi_group=1 hdmi_drive=2 You need them both set because ...
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7 votes

How to reinitialize HDMI without rebooting the RPi

Try tvservice --explicit="DMT 35 HDMI" This powers on HDMI explicitly with "DMT mode 35" which is 60 HZ at 1280x1024 pixels. There is also tvservice --off if you've got enough. For more ...
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7 votes

Raspberry Pi Not Working

Based on the type of flashing of the green (ACT) LED, you can figure out what is wrong (or at least what ballpark it's in) by looking at this page. Too long didn't read version: Green LED: ACT LED --...
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7 votes
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Raspbian Put monitor to sleep at night and wake in morning

I am using xset dpms force off to turn off the display. This command uses Display Power Management Signaling. In a cron job, you'll need to set the DISPLAY variable, so that the crontab entries ...
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7 votes
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Pi 4B Won't boot without HDMI cable plugged to Monitor

The most likely scenario is that the Pi has booted, but you have asked it to do the impossible i.e. boot to Desktop when there is no default Desktop (an examination of the boot logs would probably ...
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7 votes

Pi 4B Won't boot without HDMI cable plugged to Monitor

This in fact is a known problem with the Sense-Hat. See https://github.com/astro-pi/python-sense-hat/issues/96 for detail. Apparently, the Sense-Hat interferes with the resolution auto-detection if ...
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7 votes
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Why can't you connect Raspberry Pi to a Laptop via HDMI

Most laptop hdmi ports are output not input. They are designed to connect a laptop to a monitor. There are a few that have hdmi input. You could use VNC Viewer on your laptop to view the Pi screen (by ...
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6 votes

Touchscreen w/ HDMI output only when a display is attached?

You need to do two things : 1 Setup your xorg.conf with two layouts , HDMIOnly and TFTOnly. Use this as inspiration : https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=91764&start=25#...
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6 votes
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New Touchscreen Project - GPIO or HDMI

The safest touchscreen would be one that is built for the pi and has in-tree kernel drivers so you do not get stuck having to use a manufacturer's OS image that is likely to fall (or already be) out ...
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6 votes

No video for Raspberry Pi Zero W

Same issue a few days ago. Order of plugged in peripherals mattered. Making sure video out was connected before connecting power.
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6 votes
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How can you set the HDMI resolution of the Raspberry Pi Zero W to 320x240?

Edit the /boot/config.txt file and add the following : hdmi_force_hotplug=1 hdmi_cvt=320 240 60 1 0 0 0 hdmi_group=2 hdmi_mode=87 For reference : hdmi_force_hotplug=1 Use HDMI mode even if no HDMI ...
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6 votes

RPI3B+: What are the four components below the HDMI connector called?

While I can't specifically identify them from this picture where any markings they may have are hidden, that is almost certainly the problem with your HDMI output. If you look at the three that are ...
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  • 357
6 votes

RPI3B+: What are the four components below the HDMI connector called?

What you have is a manufacturing defect called a cold solder joint. There was not enough heat or flux present to properly wet the solder to the component. This is a very weak joint, and may have ...
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  • 177
6 votes

RPI3B+: What are the four components below the HDMI connector called?

Is that even fixable? Certainly, if you have the required skills. I would put high-temperature solder flux around the component and heat it up until the tin melts, at which point the component could ...
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6 votes

How do you make the HDMI hot-pluggable on a Pi?

In 'Raspberry Pi Configuration', select 'Set Resolution' Choose resolution, then reboot.
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