Can not login TX2 after I flashed it

I flashed Jetson TX2 successfully. TX2 can show login window.
After I enter password: nvidia, it started to login and show some error in black window:
tegradc 15210000.nvdisplay: unblank
tegradc 15210000.nvdisplay: unblank
tegradc 15210000.nvdisplay: unblank

Then the login window come up again. If I enter password: nvidia, the same errors come up again.
It is a login loop.
Can anyone know how to solve this?

Do you have a serial console? If so, then see what you get from “sha1sum -c /etc/nv_tegra_release” is all “ok”. Alternatively, you might be able to use CTRL-ALT-F2 to get to a console. Or even ssh, but there are several errors causing video failure which might also cause ssh failure.

On the system where you flashed, from the location of the “Linux_for_Tegra/” directory, what do you see from:

df -H -T .

(the “.” is important)

Hi, linuxdev, thank you for your reply.

Step 1: CTL-ALT-F2 “sha1sum -c /etc/nv_tegra_release” —> I got all “ok”
Step 2: df -H -T . -----> I got:
Filesystem Type Size Used Avail Use% Mounted on
/dev/sda5 ext4 224G 38G 175G 18% /

While I am replying you, I reflashed TX2.
When I enter TX2, the graphical problem pop up to ask me what to do. I press cancel for all choice.
I think it is the Ubuntu error, not Jetson error. I successfully login now.
Thank you.