Re: confused, seems to be my normal state
On Wednesday 18 September 2019 08:51:31 David wrote:
> On Wed, 18 Sep 2019 at 21:46, Gene Heskett <gheskett@shentel.net>
wrote:
> > Does anyone have some typical scope waveforms pix that would show
> > what a working hdmi socket has for signals?
>
> There are no analog signals on the HDMI connector. Only several pairs
> of conductors for different clocked serial data.
>
> Also, if the CPU and the monitor have not been able to have an EDID
> conversation at the appropriate moment in the boot process, then I
> wouldn't be surprised if there's very little signal activity after
> that fails.
>
> So I doubt the CRO's gonna help you. Most likely I imagine that you
> just need the appropriate monitor cable with the correct digital
> signals and connectors at each end, simple as that.
>
> Did you test it yet?
Not yet, but see an earlier post, the thing is alive and present on my
local net. Currently with a raspbian 9 card in it. It was at a duplicate
address of the rpi3 because the card had been in the 3 and configured to
its name & address, changed all that to unique stuff, rebooted and still
there, just no local video. Now, after I make coffee, fix the rest of
the local nets /etc/hosts files. Then I can play some more. :) Like hook
up a mesa 7i90 interface card and find out if the new spi driver works.
Cheers, Gene Heskett
--
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Genes Web page <http://geneslinuxbox.net:6309/gene>
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