New TV - black screen - how to change resolution manually

    Hi,

    using LE13 nigthly on two HP T630s works fine since months.

    Now i changed one old working TV to a newer TV an now have no more picture.

    BIOS screen is shown and i can enter BIOS settings, but if i continue booting then screen turns black and also no audio.

    If i boot from old TV and then switch cable to new then i can see the screen also on the new one and hear audio.

    On old screen resolution was shown with 1360x7xx

    Then i changed manually the resolution on old TV and now i have black screen on both.

    - How can i go back manually to 1360x7xx. I have access with my windows PC over network.

    - How can i fix the problem with the new TV not showing the Kodi screen.

    Best regards
    Joe

    SSH in to the box, make /flash writeable with mount -o remount,rw /flash then append video=HDMI-A-1:1360x720M@60D to kernel boot params in syslinux.cfg in the boot partition and it will force the initial kernel DRM state for the HDMI-A-1 connector to use that mode. For this to work the kernel needs to detect/see that mode via EDID data on the same connector. Adjust the connector name to match whatever HDMI port is being used (if there is more than one). Adjust the resolution to one that is listed if not, e.g. if the TV supports 1080p then use 1920x1080 not 1360x720. The kernel is probably auto-selecting an initial display mode based on the modes advertised but for some reason the TV doesn't actually like that mode (bad EDID data can be a thing sometimes). The same is seen sometimes with 4K TV's and forcing the initial state to 1080p helps.

    The problem was my HDMI switch without external power.
    Added external power now it works but the next problem occured :

    My 5in, 1out HDMI switch saves the last used HDMI-Port. Libreelec is on port 1.
    So if i boot but the HDMI switch is set to another port than 1 i also get no picture and no sound, even if i switch to port 1 after booting has finished.

    How can i solve this or can this be solved ?

    Best regards
    Joe

    Thanks, immediately tried it but it got worser ...

    getedid gpu says Intel/Amd

    getedid create ran without errors

    After that it was worser, because if i boot from 1 - got picture - switch to 2 - got picture, switch back to 1 - no picture

    switching back worked before

    So i did getedid delete and have no the same behaviour like before :

    can switch between ports but have to boot from port 1 for Libreelec

    I am using an HP T630 with DisplayPort but cable from DisplayPort to HDMI into HDMI switch