BBB Ubuntu HDMI Red and Blue Inverted in X Window

[sstuar...@gmail.com]

Hi,

I've got a BBB running Ubuntu 13.04 on the eMMC connected to an HDMI monitor where I want to display a webpage hosted on the BBB. I'm do this by starting an X Server and then launching a broswer:

>xinit &
>DISPLAY=:0 chromium-browser

The page is displayed, but anything that should be blue is red, and everything red is blue. Green stays the same. If I use a terminal on the HDMI display by plugging a keyboard into the BBB the colours appear as they should, but I can't get anything in X to look right.

I've tried Ubuntu 13.10 on another BBB and it had the same problem. I also tried the default Angstrom image and the desktop looked normal on that. I've tried all the supported resolutions for this monitor that I got from "xrandr -q" and they all had the same issues. I also tried another model monitor with the same issue. I tried Firefox as well and had the same issue.

parse-edid output:
Section "Monitor"
        # Block type: 2:0 3:fd
        # Block type: 2:0 3:fc
        Identifier "HP 23tm"
        VendorName "HWP"
        ModelName "HP 23tm"
        # Block type: 2:0 3:fd
        HorizSync 24-94
        VertRefresh 50-76
        # Max dot clock (video bandwidth) 170 MHz
        # Block type: 2:0 3:fc
        # Block type: 2:0 3:ff
        # DPMS capabilities: Active off:yes  Suspend:yes  Standby:yes

        Mode    "1920x1080"     # vfreq 60.000Hz, hfreq 67.500kHz
                DotClock        148.500000
                HTimings        1920 2008 2052 2200
                VTimings        1080 1084 1089 1125
                Flags   "+HSync" "+VSync"
        EndMode
        # Block type: 2:0 3:fd
        # Block type: 2:0 3:fc
        # Block type: 2:0 3:ff
EndSection

fbset output:
mode "1280x720"
    geometry 1280 720 1280 720 16
    timings 0 0 0 0 0 0 0
    accel true
    rgba 5/11,6/5,5/0,0/0
endmode

Seems this has happened to others: https://groups.google.com/forum/?fromgroups=#!searchin/beagleboard/bbb$20colors/beagleboard/l3VogAknB5Q/PBCHhZHzLeoJ

Any ideas on how to fix this, or suggestions on how to display a webpage on the HDMI without using X Windows?

Thanks,

Sean

[mich...@o2.pl]

Switch to 16 bit color wating for the rock solid fix.: add /etc/X11/xorg.conf

 Section "Screen"
     Identifier    "Default Screen"
     Monitor        "Configured Monitor"
     Device        "Configured Video Device"
     DefaultDepth    16
     SubSection "Display"
         Modes        "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
     EndSubSection
 EndSection

[sstuar...@gmail.com]

Worked great, thanks!

[krunoslav...@gmail.com]

Thanks !!  I would never come up to that my self.

I toguht I'm the first one with that problem.

 

But why is it that seldom? Is something wrong with our BBB?

Or, are all the others color-blind?

[Gerald Coley]

Nothing is wrong with the BBB. Depending on the color mode, the pin out changes on the processor, colors get moved around.. Check the processor documentation.

Gerald

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ger...@beagleboard.org

http://beagleboard.org/

http://circuitco.com/support/

[krunoslav...@gmail.com]

OK, thanks

I wonder that just that few people are complaining about that. There must be few more using Ubuntu+LXDE and I'm not sure the colors was right also in the Angstrom.