HDMI Display not working for Ultra96V2 board

Darshan,

Can you be more precise about which image you are using ?

Is it one of the Vitis-AI images from AlbertaBeef's projects ?

If yes, which one : Vitis-AI 1.0, 1.1, 1.2, 1.3 ?

First, the fact that "xrandr --query" is reporting 1024x768 (the default setting),

may indicate that the U96V2 did not "see" the DP monitor.
Some monitors which have multiple inputs, disable the unused connectors.Are you able to "select" the DP input you are using with the monitor's menu buttons or

For reference, here is what I get with my Vitis-AI 1.3 image:

After powering up Ultra96-V2, I get the same as you :

   root@u96v2-sbc-base-2020-2:~# export DISPLAY=:0.0

   root@u96v2-sbc-base-2020-2:~# xrandr --query

   Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096

   DP-1 disconnected primary

   root@u96v2-sbc-base-2020-2:~#

After selecting the DP input on my monitor with the monitor's menu buttons,

I can see some verbose on the serial console (you may not see this verbose in your putty console)

   [  117.335480] Console: switching to colour frame buffer device 480x135

   [  117.341928] zynqmp-display fd4a0000.zynqmp-display: fb0: xlnxdrmfb frame buffer device

Also, I can see the chromium browser appear on the monitor.

Re-trying the xrandr query, now returns:

   root@u96v2-sbc-base-2020-2:~# xrandr --query

   Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 4096 x 4096

   DP-1 connected primary 1920x1080+0+0 607mm x 345mm

      1920x1080     60.00*+  59.94

      3840x2160     30.00    29.97

      2560x1440     59.95

      1680x1050     59.95

      1600x900      60.00

      1280x1024     75.02    60.02

      1440x900      59.89

      1280x800      59.81

      1152x864      75.00

      1280x720      60.00    59.94

      1024x768      75.03    70.07    60.00

      832x624       74.55

      800x600       72.19    75.00    60.32    56.25

      640x480       75.00    72.81    66.67    60.00    59.94

      720x400       70.08

   root@u96v2-sbc-base-2020-2:~#

Regards,

Mario (AlbertaBeef)

Hi there,

To expand on this, it might be helpful to check out this thread:

Ultra96-v2 mini-DP to HDMI adapter

It has links to an accessory page where we have tested known good adapters.  Not all adapters work with the Ultra96v2.

It also has some troubleshooting tips and tricks - very similar to what Mario posted above.

--Dan

Hi Mario,

I am using Vitis-AI 1.2 and the image is from AlbertaBeef's projects.

I believe that the Active converter which I have will not support the Ultra 96 v2 board.

How about using VNC Server?

Will it be a better option?

Thanks,

Darshan

Darshan,

AlbertaBeef is me, those are the projects I created.

The HDMI issue is not specific to the Vitis-AI design, unless you were successful with the HDMI monitor using a different design ?

Other options are to use X11 forwarding.  This was done in the hackster.io AI Technical Training Course (TTC-AI).

Let me know if this option interests you, I can re-purpose and test that flow with this latest design.

I have never used VNC server with the Ultra96-V2, so cannot be of any use there ...

Do you know how to do this ?

Regards,

Mario.