Intel NUC, kodi on 4K is limited to 30FPS

  • Code
    ExecStartPost=-/bin/sh -c ". /etc/profile; exec /bin/sh /storage/.config/xorg.xr andr.sh"
    Delete the space if it is really there -----------------------------------------^

    If not please post the output of (systemctl show xorg;journalctl -u xorg)|pastebinit

  • I cant get your build LibreELEC-Generic.Haswell.x86 to work. All other builds work except that one. It hangs on the syslinux bootloader window. any workaround???

  • I can finally say that I have everything working as planned finally. Thank you very much for everyones help.


    using all 3 of the xrandr commands in the autostart.sh file was finally what worked for me. Thanks mglae you are a lifesaver.

    xrandr --newmode "3840x2160p60" 593.41 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync

    xrandr --addmode DP1 3840x2160p60

    xrandr --output DP1 --mode 3840x2160p60


    escalade thanks for the autostart.sh tip works perfect. Like BoKKER I was not able to get the haswell build to work. I dropped it in the update folder and it went through the update process but it just hung on the nuc logo on restart. I am now using the 20170710 version. On your newest version, it changes the displayport output from DP1 to DP-1, very odd, first time I have seen that.


    Edit: Updated to the newest version 20170712 and was able to modify my autostart.sh to use DP-1 instead of DP1 and still worked fine. I will just have to remember to double check how the display port is displayed when doing future upgrades. Thanks again.8)8)8)8)

    Edited once, last by gwilly7 ().

  • using all 3 of the xrandr commands in the autostart.sh file was finally what worked for me. Thanks mglae you are a lifesaver.

    xrandr --newmode "3840x2160p60" 593.41 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync

    xrandr --addmode DP1 3840x2160p60

    xrandr --output DP1 --mode 3840x2160p60

    with these 3 commands on 0710 I end up with black screen on my tv stating no signal.

  • with these 3 commands on 0710 I end up with black screen on my tv stating no signal.

    On my vizio tv I have to enable full uhd color on the hdmi input settings to be able to view 4k at 60hz. Looks like sony calls it something different. In your settings you will need activate hdmi enhanced on the hdmi port you are using.

  • On my vizio tv I have to enable full uhd color on the hdmi input settings to be able to view 4k at 60hz. Looks like sony calls it something different. In your settings you will need activate hdmi enhanced on the hdmi port you are using.

    thank you this helped me. I dont really know why would it be off from the start to begin with, but now finally I was able to get 60fps. I will see how it performs over time but I am happy, Thank you everyone :)


    now only to figure out why there is no audio

    edit:fixed

    Edited 2 times, last by BoKKER ().

  • Hello.


    Please help me.

    I made the autostart.sh file and added these entries to it:

    Code
    xrandr --newmode "3840x2160p60" 593.41 3840 4016 4104 4400 2160 2168 2178 2250 +hsync +vsync
    xrandr --addmode DP2 3840x2160p60
    xrandr --output DP2 --mode 3840x2160p60

    After restarting the computer, there is no picture on the TV.


    Putty


    I would like to have the option to choose 3840x2160x50Hz and 3840x2160x60Hz.

  • For your first problem: don't use the third line, kill it and go on with the 2 first lines in the austostart.sh.


    I use kodi with the resolution of 1920 * 1080, only for UHD the switching to 3840 * 2160.

  • When I manually issue the 3 commands, it takes a very long time but finally the resolution in settings shows as 3840x2160 and 59.94 Hz.


    Now I have added the 3 lines to autostart but the system starts and acquires 3840x2160 and 30 Hz and the 59.94 is no longer in the list to choose from.


    What could be wrong?

  • Are you sure using a HDMI 2.0 port on the TV and have it configured for HDMI 2.0?

    I also had to make sure "full uhd color" was turned on on the input on my tv for this to work.

    My TV is a Sony 43X8300D. All inputs are supposed to be 4k60p. With an Amlogic box I get 4k60p too.


    First things first - am I supposed to get 4k60p output with the DP port using a DP-HDMI cable? Or can I get it right out of the HDMI port on the 3455?


    I tried using the commands by connecting the HDMI port, I can see the new 59.94 option in the list but there is no display if I select it.


    With the display port I am able to select the 59.94 Hz option, but like I said, I can't sustain it after a reboot.


    Following is what I get when using the HDMI port


  • First things first - am I supposed to get 4k60p output with the DP port using a DP-HDMI cable? Or can I get it right out of the HDMI port on the 3455?

    Please check the motherboard specification what is supported on the HDMI port. The xrandr output let me the assume there is an internal DP-HDMI converter.


    Does your external DP-HDMI converter support 4k60p?

  • Please check the motherboard specification what is supported on the HDMI port. The xrandr output let me the assume there is an internal DP-HDMI converter.


    Does your external DP-HDMI converter support 4k60p?

    This MB - ASRock > J3455-ITX


    Spec says - "Supports HDMI with max. resolution up to 4K x 2K (4096x2160) @ 60Hz"


    DVI spec however says only max 1920x1200 @ 60 Hz. There is no DP (display port) on this board. I meant DVI and wrote DP. Sorry!


    However I am able to manually select 3840x2160p @ 30 Hz on DVI port despite spec saying otherwise?!?? And even 59.94 after sending out the command as above.

  • This MB - ASRock > J3455-ITX

    Apollo Lake only supports HDMI 1.4 itself. Therefore ASRock uses a DP-HDMI converter on the board for the HDMI 2.0 connector.


    However I am able to manually select 3840x2160p @ 30 Hz on DVI port despite spec saying otherwise?!?? And even 59.94 after sending out the command as above.


    It's a HDMI 1.4 interface with an attached DVI connector supporting 30Hz. If it really works with 59.94Hz it is outside the spec.

    Is the latest BIOS installed and are you using the same TV HDMI port as for the Amlogic box?


    From the software side you can try a Milhouse Testbuild using kernel 4.14 and latest graphics drivers. Put it on an USB stick and boot using the "run" option.