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#1 2021-02-03 15:17:19

stevesherrin
Member
Registered: 2020-12-09
Posts: 8

NOOB question - Monochrome lcd issue

I have a 6.08 monochrome lcd:

https://www.panoxdisplay.com/html/produ … -82-1.html

The lcd is deteced and display image when connected to my pc but when connected to my nanodlp it does not.  I have tried with both the "Normal" and "Non-Standard Monochrome" Display adapter settings and neither works.  When I SSH into it and use tvservice the display is detected:

tvservice - s displays "state 0xa [HDMI DMT (87) RGB full 16:9], 1440x2560 @ 48.00Hz, progressive" which looks to be correct and

tvservice -l displays:

"1 attached device(s), display ID's are :
Display Number 2, type HDMI 0"

BUT when I try:

tvservice -d edid.dat
edidparser edid.dat |grep 1440 |sort -u

I get "Nothing Written!" (no info like "hfp:60 hs:10 hbp:35 vfp:4 vs:2 vbp:2 pixel clock:198 MHz")

I cannot

Any thoughts?

Last edited by stevesherrin (2021-02-03 15:42:00)

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#2 2021-02-05 17:42:01

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,546

Re: NOOB question - Monochrome lcd issue

It is common problem with less known displays and nanodlp. I guess filling config.txt file correctly based on manufacturer spec sheet should make it works.

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#3 2021-02-05 22:06:03

stevesherrin
Member
Registered: 2020-12-09
Posts: 8

Re: NOOB question - Monochrome lcd issue

Shahin,

Thank you!  I just realized there is an additional issue... in NanoDLP "HDMI Power On/Off" is not showing as an option.  What would cause that?

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#4 2021-02-06 21:43:34

Shahin
Administrator
Registered: 2016-02-17
Posts: 3,546

Re: NOOB question - Monochrome lcd issue

It is removed as some displays does not come up after hdmi off/on. Anyway you can do it using syscall code on gcode box.

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#5 2021-02-07 17:01:07

stevesherrin
Member
Registered: 2020-12-09
Posts: 8

Re: NOOB question - Monochrome lcd issue

Can anyone recommend a good 6" monochrome lcd with board known to work with raspberry pi (with config.txt even better)?  I have tried virtually every config I've found and none seem to work with my board/screen.  I can edit the config and get tvservice to show all the correct display modes but HDMI on/off still isn't an option, NanoDLP doesn't display anything on it and the LED on the driver board flashes (it is solid when hooked up to my computer)

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