Xavier & TX2 suffering from consistent VSync tear at top of screen. Affecting 4k resolutions

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Xavier
21

Hi,

The 4k@60 is another story in display driver. Unfortunately, currently there is no method to bypass it.

22

Hi PauloRenan,

Are you able to check the fps before and after adding this option?

23

Yes, the fps with v-sync is fixed at 30. Same as before this change.
I’m not doing any scaling, by the way. Application runs at native resolution, fullscreen.

24

I just thought I’d post an update to this thread, for further reference.

1- Screen tear at the top with v-sync application was solved by adding the line below to the xorg.conf, and I can confirm that worked for all the jetson dev kit boards I tried.

        Option            "ForceCompositionPipeline " "on"

2- 4k@60 not working, only 4k@30 - sorry for flagging that here. It was just a coincidence of incompatible hardware on my end.

Earlier 4k@60 did not work because the screens I tried (3 or 4 different models) none supported 4k@60 specifically over HDMI, only over DP. I didn’t even know it could be different depending on the connector. And/or the hdmi cables I used earlier (3 or 4 different cables) did not provide enough speed for 4k@60.

I now gave a fresh try, and found a screen/hdmi port/cable that was compatible, and it works like a charm!

Thank you for the support.

And just for the record - when I used “ForceFullCompositionPipeline” on the xorg.conf on the xavier dev kit, the hdmi alt-mode (with a hdmi cable connected to the usb-c port) stopped working. Normal hdmi out was fine.

25

Hi PauloRenan,

the hdmi alt-mode (with a hdmi cable connected to the usb-c port)

We don’t have such port on xavier devkit. Are you talking about DP?