Hi all.   The display does not output normally.  1. This is the screen of the problem.      2. This is a screen that should come out normally.         Therefore, it is necessary to review whether the settings are correct in the bootloader and the kernel.  Below are the system information and tasks.  - Hardware system  Module: Apalis iMX6, Ixora Carrier Board v1.1  LVDS 2 port : LA123WF4-SL05, 12.3”WU (1920 X RGB X 720) TFT- LCD    - Operation system  boot2qt : Boot to Qt for Embedded Linux 2.3.4  bootloader: U-Boot 2016.11-dirty  kernel : Linux version 4.1.44-2.7.5+g18717e2     - LCD timing      - Device Tree of kernel, arch/arm/boot/dts/imx6qdl-apalis.dtsi  mxcfb1: fb@0 {   compatible = "fsl,mxc_sdc_fb";  disp_dev = "ldb";  interface_pix_fmt = "RGB24";  default_bpp = <24>;  int_clk = <0>;  late_init = <0>;  status = "disabled"; // "okey" in arch/arm/boot/dts/imx6qdl-apalis-ixora-v1.1.dtsi  };    &ldb {   status = "okay";   split-mode;   // dual-mode;   lvds-channel@0 {   reg = <0>;   fsl,data-mapping = "spwg"; /* "jeida"; */   fsl,data-width = <24>;   crtc = "ipu2-di1";   primary;   status = "okay";     display-timings {   native-mode = <&timing01>;   timing01: 1920x720 {   clock-frequency = <89400000>;   hactive = <1920>;   vactive = <720>;   hback-porch = <96>;   hfront-porch = <30>;   vback-porch = <3>;   vfront-porch = <3>;   hsync-len = <2>;   vsync-len = <2>;   };   };   };   lvds-channel@1 {   reg = <1>;   fsl,data-mapping = "spwg";   fsl,data-width = <24>;   crtc = "ipu1-di0";   status = "okay";     display-timings {   timing02: 1920x720 {   clock-frequency = <89400000>;   hactive = <1920>;   vactive = <720>;   hback-porch = <96>;   hfront-porch = <30>;   vback-porch = <3>;   vfront-porch = <3>;   hsync-len = <2>;   vsync-len = <2>;   };   };   };   };    - u-boot env  vidargs=video=mxcfb0:dev=ldb,1920x720@60,if=RGB24, video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off     - kernel log  :  [ 0.244330] MIPI DSI driver module loaded  [ 0.244682] ldb 2000000.aips-bus:ldb@020e0008: split mode  [ 0.244951] ldb 2000000.aips-bus:ldb@020e0008: split mode or dual mode, ignoring second output  [ 0.245615] 20e0000.hdmi_video supply HDMI not found, using dummy regulator  [ 0.247074] mxc_sdc_fb fb@0: registered mxc display driver ldb  [ 0.262134] mxc_sdc_fb fb@0: 1920x720 h_sync,r,l: 2,30,96 v_sync,l,u: 2,3,3 pixclock=89405000 Hz  [ 0.272800] imx-ipuv3 2800000.ipu: IPU DMFC DP HIGH RESOLUTION: 1(0,1), 5B(2~5), 5F(6,7)  [ 0.306740] mxc_sdc_fb fb@0: 1920x720 h_sync,r,l: 2,30,96 v_sync,l,u: 2,3,3 pixclock=89405000 Hz  [ 0.354510] Console: switching to colour frame buffer device 240x45  [ 0.389237] mxc_sdc_fb fb@1: mxcfb1 is turned off!  [ 0.389484] mxc_sdc_fb fb@2: mxcfb2 is turned off!  [ 0.389720] mxc_sdc_fb fb@3: mxcfb3 is turned off!   :  - Run fbset of target     root@b2qt-apalis-imx6:~# fbset     mode "1920x720-60"  # 😧 89.405 MHz, H: 43.655 kHz, V: 59.966 Hz  geometry 1920 720 1920 1440 24  timings 11185 96 30 3 3 2 2  accel false  rgba 8/16,8/8,8/0,0/0  endmode      Is there anything else to check?  Thanks.   
        
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