default login for core-image-base

[minicarpet]

I have built core-image-base image using meta-tegra scarthgap. I am wondering what is the default login when connecting from uart or ssh ?Note: debug-tweaks is not enabled.

[dwalkes]

This is a poky question so check out the documentation in yocto project, especially https://docs.yoctoproject.org/ref-manual/features.html#image-features and https://docs.yoctoproject.org/dev/dev-manual/securing-images.html#considerations-specific-to-the-openembedded-build-system. In general though if you turn off debug tweaks and don't use one of the other password options then login over ssh will be disabled

[minicarpet]

I see, but there is a script in Linux_for_Tegra called l4t_create_default_user.sh can we use it with meta-tegra , if yes, how ? Does it make sense ? or should we use only poky solution to create user ?

When I define nothing, what thould be the default user/password ? I cannot login to my board after create core-image-base on devkit.

[dwalkes]

I see, but there is a script in Linux_for_Tegra called l4t_create_default_user.sh can we use it with meta-tegra

I'm not familiar with that one but I assume it probably isn't the way you'll want to do it with meta-tegra, you might consider doing at build time instead. See https://docs.yoctoproject.org/dev/ref-manual/classes.html#ref-classes-extrausers from the link I shared above for the way to do this on yocto builds.

When I define nothing, what thould be the default user/password

There will be no password for the root account if you don't define one.

I cannot login to my board after create core-image-base on devkit.

Assuming you mean you can't login over ssh, if you set EXTRA_IMAGE_FEATURES = "allow-empty-password empty-root-password allow-root-login" you won't be able to login over ssh unless you change SSH configuration to allow login with empty root password.

You can take a look at https://github.com/OE4T/tegra-demo-distro which sets up the defaults such that you can login over SSH, also has some turn-key usable images for just getting started.