Hdmi does not work after replace boot.img and dtb file! (original) (raw)

hello,
hdmi is working well after flash full Jetpack5.1.5 official packages.
we compile kernel5.10.209 under public_source.tar.gz, then replace Image and dtb file on board,
the path of Image on board is: /boot/Image
the path of dtb on board is: /boot/dtb/kernel_tegra194-p3668-0001-p3509-0000.dtb
hdmi does not work after reboot, uart debug output these message

tegradc 15200000.display: dc_poll_register 0x41: timeout
tegradc 15200000.display: dc timeout waiting for DC to stop
tegradc 15200000.display: dc_poll_register 0x41: timeout
tegradc 15200000.display: dc timeout waiting for DC to stop
tegradc 15200000.display: dc_poll_register 0x41: timeout
tegradc 15200000.display: timeout waiting for postcomp init state to promote
tegradc 15200000.display: dc_poll_register 0x41: timeout
tegradc 15200000.display: timeout waiting for win assignments to promote
tegradc 15200000.display: tegra_nvdisp_head_enable, failed head enable

Have you tried turning it off and back on again?

ChinoLuo April 30, 2025, 2:28am 3

yes, try to shut down and power on for several times, but still no working,
we just replace boot.img and kernel_tegra194-p3668-0001-p3509-0000.dtb!

Try making sure the dtb and Image are compiled to the same kernel source tree and configuration.

the version of Jetson Linux is R35.6.1,right?

ChinoLuo April 30, 2025, 2:56am 8

can replace boot.img and dtb file by deleting old one and pushing new one to board directly?

Usually. There are a couple edge cases where some additional steps are required, but that will work most of the time.

ChinoLuo April 30, 2025, 7:00am 10

it is working well now, display problem dues to the HDMI display machine!
Thank you!