Intel J1900 - NO SIGNAL on Philips TV - HDMI

    Hi,

    • HW - PC: Intel J1900
    • HW - TV: Philips 48PFT5500/12
    • OS: LibreELEC 11.0.1 (Legacy Generic PC) - also tried with LibreELEC 10.0.4

    I have a small fanless computer with micro motherboard with Intel J1900. I've been using this with standard 1920x1080 px monitor for ages without any issue. I now got an older Philips TV with Android. The Android is old without any further option to upgrade so I want to use the TV only as a display.

    There is NO SIGNAL when plugging the PC into TV using HDMI cable. Not even during mini-PC startup.


    Already done troubleshooting:

    1. When I connect my laptop to the TV using the same HDMI cable + same HDMI port on TV it works - without even touching anything on TV.

    2. xrandr info

    3. xrandr set display device

    Code
    xrandr --output HDMI2 --mode 1920x1080 --rate 60.00 // does nothing
    Code
    xrandr --output HDMI2 --mode 1920x1080 --rate 30.00 // does nothing

    4. I set up EDID: https://wiki.libreelec.tv/configuration/edid

    Nothing works :(

    Could you please advise what else I could try?

    Thank you!

    Here is the /flash/syslinux.cfg file:

    Code
    DEFAULT linux
PROMPT 0

LABEL linux
KERNEL /KERNEL
APPEND boot=UUID=201A-3D9F disk=UUID=3adacfb7-75d9-43fa-90bd-e36da9e52c94 quiet initrd=/edid.cpio drm.edid_firmware=edid/edid.bin video=HDMI-A-2:D

    Which display ports do you have?

    Do you use the same port for monitor and TV?

    Do you use a display adapter?

    Did you had a look at BIOS / EFI settings?

    Quote from Da Flex

    Which display ports do you have?

    Do you use the same port for monitor and TV?

    Do you use a display adapter?

    Did you had a look at BIOS / EFI settings?

    Hi Da Flex,

    • There are only 2 display ports: VGA and HDMI
    • Yes, I'm using the same HDMI for both
    • No, it is a HDMI to HDMI cable
    • Yes, I looked into BIOS - I haven't found anything related to this - could you advise what to change, please?

    Thank you!

    Remove any EDID configuration, reboot and create complete logs with:

    Code
    pastekodi
paste /var/log/Xorg.0.log

    Maybe something is visible.

    just a side note, if you experience (depends at board type) sudden hard locks/crashes of your htpc pls disable !all! power saving stuff at the bios (C States, powersave, ... whatnot) because Intel messed up their drivers at Win and Linux for the J1900 so you get crashes with enabled powersavings :)

    It's very likely that your hardware uses a DiplayPort-to-HDMI adapter (LSPCon chip):

    Code
    14.605] (II) intel(0): Output DP1 has no monitor section
14.605] (II) intel(0): Enabled output DP1
14.606] (II) intel(0): Output HDMI1 has no monitor section
14.606] (II) intel(0): Enabled output HDMI1
14.606] (II) intel(0): Output DP2 has no monitor section
14.606] (II) intel(0): Enabled output DP2
14.606] (II) intel(0): Output HDMI2 has no monitor section
14.606] (II) intel(0): Enabled output HDMI2

    Linux drivers for such chips have known issues. My suggestion: garbage.

    PS: Maybe it's worth to try the other HDMI ports of your TV.

    zelenac There is nothing special in Xorg.0.log. pastekodi should create a ix.io URL too but can fail silently from time to time.

    Da Flex HDMI2 seems to be used not DPx. No DiplayPort-to-HDMIadapter involved.

    Quote from mglae

    Da Flex HDMI2 seems to be used not DPx. No DiplayPort-to-HDMI adapter involved.

    Yes, but the user only has one VGA, and one HDMI port. This makes me think, a converter like this is involved:

    - DisplayPort 1 -> VGA

    - DisplayPort 2 -> HDMI

    (DiplayPort is the protocol standard here)

    If the LSPCon driver is bad, we can't rely on that device list. Something is fishy on it.

    Maybe it's best to open the box, and identify all chips.

    I also want to see kodi.log, generated by pastekodi.