FREEZES on LCD

Discussion of your EDM baseboard, your add-on boards or other peripherals for your wandboard.

FREEZES on LCD

Postby marco1957 » Mon Dec 30, 2013 5:03 pm

I have buided the wandboard quad sources order to activate the LCD display F07A-0102.
Now it works, but when I connect the HDMI display, the LCD has in some places the freezes. How can I solve this problem?
the settings are:
bootargs console=ttymxc0,115200 init=/init video=mxcfb0:dev=lcd,SEIKO-WVGA,800x480,if=RGB666,bpp=32 video=mxcfb1:dev=hdmi,1280x720M@60,if=RGB24,bpp=32 video=mxcfb2:off fbmem=8M vmalloc=400M androidboot.console=ttymxc0 androidboot.hardware=freescale.
Thanks in advance
Marco
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Re: FREEZES on LCD

Postby marco1957 » Wed Feb 12, 2014 7:43 am

Does anyone have the same problem? Has anyone found a solution?
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Re: FREEZES on LCD

Postby Tapani » Thu Feb 13, 2014 6:40 am

What does freezes on LCD mean?
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Re: FREEZES on LCD

Postby marco1957 » Thu Feb 13, 2014 9:33 am

Yes.
When you has lcd and Hdmi screen working, you can see on lcd freezes.
If you switch off the screen HDMI the lcd works well.
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Re: FREEZES on LCD

Postby marco1957 » Fri Feb 21, 2014 7:52 am

Finally I discovered the problem. I had answer from Freescale, the Lcd in incompatible with HDMI.
"oh, you are using hdmi + LCD. Unfortunately that won't be possible. It is restrained to have LVDS + (hdmi or lcd), but it has to have LVDS"
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Re: FREEZES on LCD

Postby mki » Fri Feb 21, 2014 7:36 pm

Thank you marco for posting the result of your investigation. I already noticed the same on my board.
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Re: FREEZES on LCD

Postby fairyanna » Sat Jan 03, 2015 11:57 am

I think you need to identify how the Linux is going to communicate to your C++ program. Are you bit banging pwm or using hardware pwm on the soc?
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Re: FREEZES on LCD

Postby JayminD » Mon Jan 05, 2015 4:08 am

marco1957 wrote:Finally I discovered the problem. I had answer from Freescale, the Lcd in incompatible with HDMI.
"oh, you are using hdmi + LCD. Unfortunately that won't be possible. It is restrained to have LVDS + (hdmi or lcd), but it has to have LVDS"



Thanks for sharing result, it will help. :)
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