we have a carrier board designed for TX2 and we have a NA1012B-ET HDMI to 3G HD-SDI converter on it. I get the usual HDMI output without this chip but with this converter added i do not get any display output.
$ xrandr --query
Screen 0: minimum 8 x 8, current 640 x 480, maximum 32767 x 32767
HDMI-0 disconnected primary (normal left inverted right x axis y axis)
$ sudo dmesg | grep hdmi
[sudo] password for nvidia:
[ 1.507578] vdd-hdmi: 5000 mV
[ 1.727038] tegradc 15210000.nvdisplay: hdmi: no prod_list_hdmi_board, use default range
Sorry but we cannot move to higher JP on this system unfortunately. Is there a way to debug this with the existing JetPack. We only have added a HDMI to SDI chip on the board, normal HDMI output is been verified but on adding this converter we do not get the display output.
So what kind of hardware change is that ? What is the dmesg looking like now? You should not grep dmesg as you just remove all the important logs and only grep something that do not matter at all.
I saw HDMI is not connected, so what is the status of the HPD gpio now?
You should tell such basic information but not what you saw on your SDI. That SDI thing is your hardware, not related to anything to Jetson.
Yes i know SDI is not related to Jetson, i wanted to know if there is additional configuration required on TX2 for this to be enabled. for ex: any driver.
gpio-377 ( |hdmi2.0_hpd ) in hi
# cat /sys/class/gpio/gpio327/value
1
Yes i know SDI is not related to Jetson, i wanted to know if there is additional configuration required on TX2 for this to be enabled. for ex: any driver.
What to enable? If you add some hardware that is not by default supported by Jetson then you need to figure out what driver you are using there. We won’t know what you need. You should find the vendor driver for whatever hardware you are running there.
Current issue to Jetson HDMI is the hpg gpio totally not triggered by your hardware so HDMI driver does not think there is anything connected on the board. The HPD is low active one.
