Tinker Board S HDMI Resolution Issues, xrandr error

[Tinkerdan]

Hello and thanks for reading.  I have done some digging before posting this so let me explain my issue and then what I have tried.  I am using the Tinker Board S (via SD card, had same issue using EMMC img also) with the Bionic mainline kernel 4.14.y (in armbian config tool it shows Armbian 5.60 Stable ) on an LG 24LF452B montior/tv with the boards HDMI port and no adapters.  I have been trying to set the display resolution to 1366X768 or as close to it (it does not appear in the display settings menu natively) but cant seem to make this work.  The display works fine on other resolutions, except for horrible image because the wrong resolution, and can be used on 1366X768 when using other images including Xubuntu, TinkerOS etc so it doesn't appear to be the monitor or board hardware.  At this point I've tried the Xrandr method, (cvt, new mode, add mode) with 1368X768 at 59.88hz, 60 hz and a few others but the screen goes black after using the HDMI-1 output command or using the 1368X768 display settings option that became available for the session.  The screen will sometimes appear to work perfectly at the needed resolution for less than a second after hitting apply but then goes black or the monitor states "invalid format".  I can replug the HDMI cable and it will revert back to 1024 resolution.  I have read some threads having to do with patching the kernel but I want to make sure I am not missing something much simpler.  I will be happy to supply any info required for assistance as I like Armbian alot, it feels less restrictive and much smoother than TinkerOS and the community seems very active.  I am still learning but would like to be able to contribute.  Thanks again.

 

Ex.

@tinkerboard:~$ xrandr --newmode "1366x768_59.88" 85.25 1368 1440 1576 1784  768 771 781 798 -Hsync +Vsync
@tinkerboard:~$ xrandr --addmode HDMI-1 "1368x768_59.88"

@tinkerboard:~$ xrandr --addmode HDMI-1 "1366x768_59.88"

 

xrandr info from verbose

Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096
HDMI-1 connected primary 1024x768+0+0 (0x4d) normal (normal left inverted right x axis y axis) 509mm x 286mm
    Identifier: 0x41
    Timestamp:  55336
    Subpixel:   unknown
    Gamma:      1.0:1.0:1.0
    Brightness: 1.0
    Clones:    
    CRTC:       0
    CRTCs:      0 1
    Transform:  1.000000 0.000000 0.000000
                0.000000 1.000000 0.000000
                0.000000 0.000000 1.000000
               filter: 
    EDID: 
        00ffffffffffff001e6dca5901010101
        0119010380331d78ea6275a3554fa027
        125054a76a00314f454f614f81000101
        010101010101662156aa51001e30468f
        3300fd1e1100001e000000fd00384b1e
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        44204844204c472054560a20000000ff
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        2100009e023a80d072382d40102c4520
        06442100001e023a801871382d40582c
        450056502100001e00000000000000f0
    link-status: Good