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Author: WlodzimierzH

[Mini 2] HDMI-DVI converter failure (no screen)

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Published in 2015-11-29 16:42:40 from mobile | Show all floors
@jamante @dni hi, did anybody really test 1024*768 with HDMI2dvi converter?

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Published in 2015-11-29 16:48:28 from mobile | Show all floors
Edited by xiaoli at 2015-12-2 21:56

the resolution is required for my business. If anybody has solution, pls drop me an email. I d like to pay for your efforts once it works.
Published in 2015-11-30 00:15:43 | Show all floors
I just tried to add
  1. hdmi_cts_compatibility = 0
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to the fex file and interchanged script.bin using a script I've written the last minutes: http://pastebin.com/5GLU7FgV

Then installed fbset and added

  1. fbset "1024x768-60"
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to /etc/rc.local. Now I get 1024x768 on my display (its native resolution is 2560x1600), but the HDMI resolution still seems to be 1920x1080 and colors look a bit strange:


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Published in 2015-11-30 15:57:57 | Show all floors
Edited by dni at 2015-11-30 16:05

Hi,

sorry i cant test it anymore, because my hdmi is also dead

But for me it worked with a hdmi2vga converter in 1024x768 and 1280x1024 with my kernel and script.bin.

I uploaded my latest Kernel one more time, maybe the other one was not the actuell one...

https://www.sendspace.com/file/936lid

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Published in 2015-11-30 18:21:53 | Show all floors
hi guys, many thanks for your help! we'll try it.
Published in 2015-11-30 19:03:47 | Show all floors
Edited by bronco at 2015-11-30 19:14
dni replied at 2015-11-30 15:57
for me it worked with a hdmi2vga converter in 1024x768 and 1280x1024 with my kernel and script.bin

I tried it with your kernel and 1024x768 settings:
  1. [disp_init]
  2. disp_init_enable = 1
  3. disp_mode = 0
  4. screen0_output_type = 3
  5. screen0_output_mode = 4
  6. screen1_output_type = 3
  7. screen1_output_mode = 10
  8. fb0_format = 0
  9. fb0_width = 0
  10. fb0_height = 0
  11. fb1_format = 0
  12. fb1_width = 0
  13. fb1_height = 0

  14. [hdmi_para]
  15. hdmi_used = 1
  16. hdmi_power = "vcc-hdmi-18"
  17. hdmi_cts_compatibility = 0
Copy code



It gets closer



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Published in 2015-11-30 20:05:34 | Show all floors
dni replied at 2015-11-30 15:57
Hi,

sorry i cant test it anymore, because my hdmi is also dead

I have tried your image, the output is 1280*768. It seems the 1280 cannot be changed to 1024, maybe is is because HDMI supported resolution is 1280*720, there is not 1024*xxx supported in HDMI spec. Any idea?
Thanks!

Roger

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Published in 2015-11-30 20:56:12 | Show all floors
Edited by dni at 2015-11-30 21:10

well, maybe its because of hdmi2dvi...
with my hdmi2vga adapter its definitly working with this kernel...
what is the value for pll_video in your script.fex?

try setting it to


  1. pll_video = 432
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or try setting it to

  1. pll_video = 260
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i cant remember :-)

btw.
has anyone tried to use gert vga 666 with orange pi?



Published in 2015-11-30 21:52:52 | Show all floors
dni replied at 2015-11-30 20:56
what is the value for pll_video in your script.fex?

I rely on loboris' settings (except of dvfs entries since I don't like overclocking/overvolting): https://github.com/loboris/Orang ... pi_pc.fex#L163-L169

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Published in 2015-12-1 15:06:07 | Show all floors
dni replied at 2015-11-30 20:56
well, maybe its because of hdmi2dvi...
with my hdmi2vga adapter its definitly working with this kern ...

Hi Dni:

After change the PLL video to 260, it works ! The orange PI PC can display 1024*768 resolution through the HDMI to DVI converter without any issue. Is it the PLL video equals to the Pixel clock*4 such as 1024*768's pixel clock is 65, so the PLL_video is 65*4=260?
Really appreciated your help! Thanks a lot!

Roger
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