HDMI not working

    I am a complete newbie to libreELEC and Kodi, but I have got Kodi working on my laptop and connected to my Tvheadend. All channels working perfectly

    So I decided to run up libreELEC on an old Windows PC (Toshiba Ultrabook) and all of that is working perfectly. Works a treat can see all my TV channels etc.

    But when I connected it to my TV, the HDMI port does not work. Tried everything, different cables, tried on 2 TV's.

    I should have tested the HDMI port before I overwrote Windows but I have no reason to assume it did not work before installing libreELEC.

    Any ideas gratefully accepted.:?:

    Original Post deletet, becaus it seems People here are not interested in my Help and didn't even try it out.

    They rather tinker with the Programmfiles because some "Experts" told them to do so.

    I won't say that my Tips will help, but if nobody tries them out you can't say for sure.

    Fine by me, but I wouldn't help here anymore, because I have no Time to spend with People who ignore me.

    So please delete my Account.

    Edited 3 times, last by Niceguy (August 10, 2025 at 9:09 AM).

    Thanks, I tried that, replacing the "video=eDP-1" with video=LVDS-1". The system showed that LVDS-1 was connected, see image.

    So I added APPEND boot=UUID=10B4-4A77 disk=UUID=93786be3-5652-e2f498d33733 quiet video=LVDS-1:d

    On reboot after making the change, the good news was that the HDMI screen showed some Linux commands

    The bad news is that there was an error.

    Error in mount flash: mount common: Could not mount UUID=10B4-4A77

    So, the HDMI can work, great. Just no idea where to go next.

    I reinstalled Kodi again.

    Hey I'm so sorry Niceguy. I just noticed that I had prepared a response to you but never sent it. My mistake. I got called away and thought I had replied. Must have never hit Send.

    Yes, I did try what you said, but there was no bios setting for HDMI.

    Also the display options that you were seeing were not available to me. Kodi did not give me any options to change any display settings.

    So apologies again and thanks so much for your contribution.

    Best regards

    Pat

    There must be only one APPEND line in the syslinux.cfg file (with your video= changes) and the boot=UUID= and disk=UUID= details (the UUIDs) must match the UUIDs of the two partitions on the internal drive, use 'blkid' to check them. If you have the wrong UUID details the system will not boot because you told it to use a UUID (partition) that doesn't exist, hence the error message you saw.

    You must not add a new APPEND line (or any new line to the file).

    Keep the original contents and only add the parameter video=LVDS-1:d (alone!) to the end of the APPEND line separated by a space.