HDMI display failed on Jetson TX2

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
21

Hi Honey_Patouceul,

The first error (vertical downscale ratio >2x) is a limitation of display window only for TX2.

Please refer to the source code of this part.

/kernel/t186/drivers/video/tegra/dc/nvdisp/nvdisp_win.c
int tegra_nvdisp_verify_win_properties(…)

2594x1944 → 640x480 out of the ability of dc window and it requires VIC(nvvidconv) to help downscale.

22

Hi

I also had various 4k HDMI resolution problems, but it turned out to be a low quality HDMI cable purchased on ebay. Replacing the cable fixed everything.

23

A red screen occurs on TX2 with 2K HDMI monitor, not on TX1.
Is there anything workaroud ?

24

I can’t answer, but anyone who does will probably want the EDID data:

sudo -s
cat `find /sys -name edid`
exit
25

A red screen is solved by adding the following line in Xorg.conf.

Option “TegraReserveDisplayBandwidth” “false”