Helpful Hint: HDMI-to-DVI cables do not work on PINE64
#1
This is a common problem with Allwinner H3 devices that are connected to a DVI monitor using a HDMI-to-DVI cable or HDMI-to-DVI adapter on Android and Linux (Ubuntu, Ubuntu Mate, Debian, etc.).

In other devices, we run the "h3disp" command from Armbian h3disp to tell the system to do special things to allow HDMI-to-DVI displays to work.  The relevant option is "-d" which enables some kind of magical HDMI-to-DVI adapter enablement.

I've confirmed that my own PINE64 system won't work with HDMI-to-DVI cable, so I have successfully remotely logged into it from the network, so I'm assured that the device and software are not faulty.

What's the equivalent of "h3disp" to enable HDMI-to-DVI adapters?  I don't want to replace my (almost) perfectly good DVI monitors just because of this.  Raspberry Pi works without any modifications, while Orange Pi One and Orange Pi PC all work fine when they're told how to use HDMI-to-DVI adapters using h3disp.  What do I need to do in order to make PINE64 work in this situation?

Thanks in advance.  Maybe it's a fex file modification?  I'm not sure.
#2
See http://forum.pine64.org/showthread.php?tid=980 (Linux only)
#3
(06-04-2016, 02:28 AM)longsleep Wrote: See http://forum.pine64.org/showthread.php?tid=980 (Linux only)

Thank you!  I am using your builds, but this command doesn't seem to do anything on my monitor.
The graphics driver needs to be told that this HDMI is connecting to a DVI monitor.  In "h3disp" the command to enable that is "-d".

If I am not mistaken, we need to disable audio and we need to disable HDCP somehow.

*EDIT*:  Solution does not work and evidently HDCP is already disabled, so something else needs to be discovered.
#4
Hdcp is disabled and always was. Your adapter is most likely incompatible .
#5
(06-05-2016, 12:01 AM)longsleep Wrote: Hdcp is disabled and always was. Your adapter is most likely incompatible .

Then HDCP is not the reason, but there is nothing wrong with my adapter (it's just an HDMI to DVI cable).  All the other Allwinner boards work fine.  The problem is in the software, namely in the HDMI configuration.

I don't want to buy a new HDMI monitor just to get video output from a PINE64 when a software/kernel fix is what the real solution will be.


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