Black screen at boot sequence with videoprojector but not whith PC monitor.

    Hi,


    I've a PC box with libreelec -9.2.3. It work perfectly when HDMI is connected to a PC monitor


    lspci give :


    00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 14h Processor Root Complex


    00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Wrestler [Radeon HD 6310]


    When I connect this PC box whith HDMI to a video projector Benq. The screen is black even during boot sequence.


    When I plug a raspberry with OSMC to the video projector with same HDMI cable. Everything is OK so HdMI cable is OK. video projector is OK.


    dmesg doesn't give any interesting informations.


    /strorage/.kodi/temp/kodi.log : I found that could be releavent: hastebin


    and /var/log/Xorg : hastebin



    Where could I find more info?

    Is this a problem with my gpu card?


    Thanks for your help.