Hdmi does not work after replace boot.img and dtb file!

Robotics & Edge Computing Jetson & Embedded Systems Jetson Xavier NX
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1

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

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

2

Have you tried turning it off and back on again?

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!

4

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

5

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

7

That’s correct

8

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

9

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

10

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

11

Glad I could help

13

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