01-31-2019 02:14 AM
I hook up everything needed for ZCU102 and prepare the example design for HDMI SS
The passthru works pretty well.
However, if switch to TX only colorbar, the monitor shows nothing
And the uart keeps looping Starting colorbar, Tx stream is down and Tx stream is up
Very rare it can show 1080p / 720p color, but never sucess for 4k
02-04-2019 08:22 AM
02-07-2019 05:37 PM
Thanks for your reply.
It seems like the Tx Only Example is working if the Monitor not going into the standby mode.
However, both monitor I have will go to standby mode before the HDMI Tx ready.
So it comes to a loop
1. Monitor detects HDMI signal
2. Monitor wait for valid HDMI signal
3. Monitor timeout and goes standby
4. HPD deassert
5. HDMI Tx SS reset the whole Tx pipe
6. Goto step 1
02-07-2019 05:50 PM
Would you share the following information ?
- Part number of Monitor
- Do you use authorized HDMI cable ? If possible, would you share it ? Especially, cable length, diameter and exist of cable filter.
02-08-2019 01:05 AM
As passthrough design works fine, I think the monitor and cable should be okay.
What's the revision of your ZCU102 board? When you test the TX only example design when monitor is standby, please type "i" and "z" in the terminal menu, and then attach this log information.
Also can you check if you see this problem with v2018.2 design, or v2018.3, or both?
Please attach the SDK workspace, and elaborate exact step (eg. TX cable is pluged after powering up the board, or before), I will use the exactly same file, and try to reproduce the problem at my end.
02-08-2019 01:40 AM
Just using 2018.1 example design, everything untouch and compile. Both passthru with 'c' command, or tx only design will have the same problem