Internal screen shows bright garbage after reboot to HDMI

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N.I.C.E
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Internal screen shows bright garbage after reboot to HDMI

Post by N.I.C.E » Sat Jan 05, 2019 4:47 am

During reboot to HDMI, the internal screen (320x240) looks like it is dying. This is shown permanently until powering the device off. HDMI output works perfectly though.

Is this a normal behaviour?

Video:
https://drive.google.com/file/d/1oWqEn9 ... g3R2Q/view

McGyver
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Re: Internal screen shows bright garbage after reboot to HDMI

Post by McGyver » Sat Jan 05, 2019 5:29 am

I have the same phenomenon but I guess this is normal. Maybe something like the internal display is showing the last input signals without further refresh.

N.I.C.E
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Re: Internal screen shows bright garbage after reboot to HDMI

Post by N.I.C.E » Sun Jan 06, 2019 2:26 pm

Okay then it seems thats how it is at the moment :|
Not a big deal but it would be nice if the LCD turns off or is set to a minimum brightness automatically, could save a lot of power also :D

Jfenton78
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Re: Internal screen shows bright garbage after reboot to HDMI

Post by Jfenton78 » Thu Jan 31, 2019 9:12 am

As I recall there was some arduino code you can edit to dim the screen further, but the wiki is not updated yet. I'm not sure if there is a way to disable to backlight or is lowering further the best option. If someone has an idea on how to disable the LCD backlight I'd be interested in it.

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