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i.MX6 LVDS and VGA double screen display

Question asked by John Lee on Jun 8, 2013
Latest reply on Sep 22, 2013 by LeviathanSteven

Hi,All.

Hi,All.I have i.MX6D SabreSD with L3.0.35_1.1.0 release package and one touchscreen display connected to the LVDS and one LCD display with VGA interface. when system started, the touchscreen display shows the ubuntu startup screen and the LCD display does not show anything, but when I use command "echo 0 > /sys/class/graphics/fb2/blank" then the LCD display always shows kernel boot logo. When I modify /dev/fb0 to /dev/fb2 in /etc/X11/xorg.conf and restart, then the LCD display shows the ubuntu starup screen and the touchscreen always shows kernel boot logo.

 

How can the i.MX6 shows the same things on both the LVDS and the VGA?

 

The kernel command line is

console=ttymxc0,115200 root=/dev/mmcblk0p1 rootwait rw video=mxcfb0:dev=ldb,1024x600M@60 ldb=dul1 video=mxcfb1:dev=lcd

The default /etc/X11/xorg.conf is

Section "InputDevice"

        Identifier      "Generic Keyboard"

        Driver          "kbd"

        Option          "XkbRules"      "xorg"

        Option          "XkbModel"      "pc105"

        Option          "XkbLayout"     "us"

EndSection

 

Section "InputDevice"

        Identifier      "Configured Mouse"

        Driver          "mouse"

        Option          "CorePointer"

EndSection

 

Section "Device"

        Identifier      "i.MX Accelerated Framebuffer Device"

        Driver          "vivante"

        Option          "fbdev"         "/dev/fb0"

        Option          "vivante_fbdev" "/dev/fb0"

        Option          "HWcursor"      "false"

EndSection

 

Section "Monitor"

        Identifier      "Configured Monitor"

EndSection

 

Section "Screen"

        Identifier      "Default Screen"

        Monitor         "Configured Monitor"

        Device          "i.MX Accelerated Framebuffer Device"

EndSection

 

Section "ServerLayout"

        Identifier      "Default Layout"

        Screen          "Default Screen"

EndSection

 

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