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RaspberryPi3 powering up but no visual HDMI - VGA

wolfmountaingames

I recently got a raspberry pi, but all my monitors are VGA so I went to the store got an HDMI to VGA adapter, and plugged in the screen, mouse, keyboard, and finally the pi. The red light came on so the power cord is working, but there was no visual at all it was as if the pi was not on. I read somewhere that in an older version if you changed a line in config.txt that it sometimes help with hdmi to vga, but I can not find config.txt anywhere on the preloaded card I bought. Can someone help me with this or link me to a confirmed working HDMI-VGA adapter that works with the pi?

 

Thanks,

 

Andrew

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  • There have been a number of issues reported with failure to get an HDMI image. I have resolved several issues by appropriate lines in /boot/config.txt (edit by using a microSD card reader and text editor in another computer).

     

    This website has the full info.

     

    RPiconfig - eLinux.org

     

    My solutions to blank screens and the incorrect resolution have involved forcing HDMI and setting the required video mode. Here are the relevant lines in my config.txt.

     

    # uncomment this if your display has a black border of unused pixels visible

    # and your display can output without overscan

    disable_overscan=1

     

    # uncomment to increase signal to HDMI, if you have interference, blanking, or

    # no display

    config_hdmi_boost=4

     

    # For 1080p display

    sdtv_mode=2

    sdtv_aspect=3

    hdmi_group=1

    hdmi_mode=16

    If the VGA monitor you are using does not support 1080p then you should refer to the link, above, to find out how to get the supported video modes from the HDMI port.

  • in reply to royleith

    Hi..

    But he is unable to see the config.txt file...

    I am also facing same issue... Not yet resolved...

  • in reply to pkps1968

    I found the config.txt file it is inside the boot.tar.tz archive like @Dave_Ingles said(this is kinda like a zip file) you need to open it with something like 7-zip modify the config.txt file through this process.

  • in reply to pkps1968

    Here is how I installed Raspbian on the SD card with a linux Ubuntu Mate computer.

    https://www.youtube.com/watch?v=MQ2MV1h6Z0s&t=4s

    Yours OS should be very close to this.

    The slide at 2:13 shows the config.txt in the boot folder. This is before you even install it on the RPi. If the files look like what is in the slides then you should be good to go --- until you remove your SD card without unmounting it. The OS does housekeeping which include moving files around when you least expect it. This is to improve the the operation of the SD card.

    If you pop the card out at the wrong time the files could get corrupted.

    I hope this helps.

  • in reply to slashthedragon

    That video looks more like a Raspbian OS image restore than a NOOBS install.

     

    The first three slides shows the web links to the NOOBS download, but then after that the video appears to be demonstrating a image restore from the Raspbian OS image download.

     

    The difference between a 'Install Raspbian with NOOBS' installation and a 'Download and image Raspbian directly' installation is outlined here:

    https://www.raspberrypi.org/learning/software-guide/quickstart/

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