hi all,
I would like to create an Linux console application without Ubuntu on Jetson nano.
- Can you send how to do it ?
- Is it possible to take Ubuntu image and reduce Ubuntu and work it as console only ?
hi all,
I would like to create an Linux console application without Ubuntu on Jetson nano.
Hi @yossii
For reducing the Ubuntu image, I suggest you can create a Yocto Image using the meta-tegra layer. Yocto is a project that lets you create a custom Linux distribution only with the things you need on it.
For example for the Jetson Nano, you can follow these steps to create the image:
And then use the following ones to flash the board with that created image.
===================================================
Another option, if what you only want is to disable the GUI from Ubuntu, it works like this:
For this you might need to check the system boot target.
Basically the system will boot according to the target at which the following symbolic link is pointing to: /lib/systemd/system/default.target
/lib/systemd/system/graphical.target
/lib/systemd/system/multi-user.target
This setting can be overwritten by the existence of the /etc/systemd/system/default.target
symbolik link. which has a higher priority than the one on /lib/.
This /etc/ file is created by using the systemctl commands to change the default target, these are explained here
In summary:
To disable GUI run: sudo systemctl set-default multi-user.target
To enable GUI run: sudo systemctl set-default graphical.target
Then reboot.
Regards,
Roberto Gutierrez,
Embedded SW Engineer at RidgeRun
Contact us: support@ridgerun.com
Developers wiki: https://developer.ridgerun.com/
hi Roberto,
I have configured the Yocto and get th following error:
yitach@yitach-lt:~/fibernet/kvm_over_ip/yocto-tegra$ bitbake core-image-sato-dev
WARNING: Host distribution “ubuntu-22.04” has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
ERROR: OE-core’s config sanity checker detected a potential misconfiguration.
Either fix the cause of this error or at your own risk disable the checker (see sanity.conf).
Following is the list of potential problems / advisories:
MACHINE=jetson-nano-devkit is invalid. Please set a valid MACHINE in your local.conf, environment or other configuration file.
Summary: There was 1 WARNING message shown.
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
The local.conf has:
MACHINE ?= “jetson-nano-devkit”
DISTRO_FEATURES = “x11 opengl”
IMAGE_CLASSES += “image_types_tegra”
IMAGE_FSTYPES = “tegraflash”
SSTATE_DIR ?= “/home/yitach/fibernet/kvm_over_ip/yocto_state_dir/”
DL_DIR ?= “/home/yitach/fibernet/kvm_over_ip/yocto_downloads/”
Thx,
Yossi
hi Roberto,
I follow the instructions and got the errors:
yitach@yitach-lt:~/fibernet/kvm_over_ip/yocto-tegra$ bitbake core-image-sato-dev
WARNING: Host distribution “ubuntu-22.04” has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
ERROR: OE-core’s config sanity checker detected a potential misconfiguration.
Either fix the cause of this error or at your own risk disable the checker (see sanity.conf).
Following is the list of potential problems / advisories:
MACHINE=jetson-nano-devkit is invalid. Please set a valid MACHINE in your local.conf, environment or other configuration file.
Summary: There was 1 WARNING message shown.
Summary: There was 1 ERROR message shown, returning a non-zero exit code.
yitach@yitach-lt:~/fibernet/kvm_over_ip/yocto-tegra$
Yossi
Hi @yossii
It could be that the current meta-tegra branch has been updated for JetPack 5 and it doesn’t support Nano anymore.
So can you please tell me which version of meta-tegra do you have?
Go into the meta-tegra folder and please let me know the output of
git branch
To be more clear, this is the master branch of the meta-tegra layer: Now with JetPack 5 it doesn’t support Jetson Nano: meta-tegra/conf/machine at master · OE4T/meta-tegra · GitHub
The dunfell one, in this case does support it because it is a little bit older: meta-tegra/conf/machine at dunfell · OE4T/meta-tegra · GitHub
There you can see the jetson-nano-devkit.conf file (only on dunfell), I want to know if that file exists, if not, then you might need to checkout to the dunfell branch.
Regards,
Roberto
hi Roberto,
yit@yi-lt:~/fibernet/kvm_over_ip/yocto-tegra/poky$ git branch
Any update Roberot, see the git branch is dunfell …
y@y-lt:~/kvm_over_ip/yocto-tegra/meta-tegra$ git branch
Hi @yossii,
Can you share with me your build/local.conf and the build/bblayers.conf files? To see if we are working properly with the meta-tegra layer. Also, can you plese provide the output of
ls ~/kvm_over_ip/yocto-tegra/meta-tegra/conf/machine/
Regards,
Roberto
Hi Roberto,
Attached is the file.
Roberto addtional question:
Hi,
I see you are missing the bblayers.conf step from this subsection:
The one where you add the meta-tegra layer to the bblayers.conf file.
Please double check if there is any other step missing from there.
===========================================================
The imx477 can provide 4k@30fps, before jetpack 4.6 we used these patches to add it to the kernel: Raspberry Pi HQ camera IMX477 Driver | Linux driver for Jetson | RidgeRun - RidgeRun Developer Connection
I think from 4.6 onwards, it is already integrated into the source code and it should be a matter of enabling it on the config and device tree. The Jetson Nano should be able to handle it.
Regards,
Roberto
See the file
POKY_BBLAYERS_CONF_VERSION = “2”
BBPATH = “${TOPDIR}”
BBFILES ?= “”
BBLAYERS ?= "
/home/yitach/fibernet/kvm_over_ip/yocto-tegra/poky/meta
/home/yitach/fibernet/kvm_over_ip/yocto-tegra/poky/meta-poky
/home/yitach/fibernet/kvm_over_ip/yocto-tegra/poky/meta-yocto-bsp
"
bblayers.conf (385 Bytes)
I follow all step by step and got the errors …
What else is missing ?
Hi @yossii
It should look like this, according to the bblayers.conf section:
BBLAYERS ?= " \
/home/${USER}/yocto-tegra/meta-tegra \
/home/${USER}/yocto-tegra/poky/meta \
/home/${USER}/yocto-tegra/poky/meta-poky \
/home/${USER}/yocto-tegra/poky/meta-yocto-bsp \
"
You see there is a meta-tegra layer added there, which you should have alongside the other layers
Regards,
Roberto
It seems it work
Hi Roberto,
The compilation is ended OK.
Can you guide me when I could see the:
Thx
This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.