Ubuntu with a chrooted jetson xavier file system and qemu : apt-get install stuck while fetching

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
1

Hello,
I am using a chrooted jetson xavier file system with qemu. (Ubuntu 20.04) (qemu-aarch64 4.2.1)
Here is the output with the command when I try to apt-get :

sudo apt-get install -y build-essential
Unknown host QEMU_IFLA type: 54
Unknown host QEMU_IFLA type: 56
Unknown host QEMU_IFLA type: 57
Unknown host QEMU_IFLA type: 54
Unknown host QEMU_IFLA type: 56
Unknown host QEMU_IFLA type: 57
Unknown host QEMU_IFLA type: 54
Unknown host QEMU_IFLA type: 32820
Unknown host QEMU_IFLA type: 56
Unknown host QEMU_IFLA type: 57
Unknown host QEMU_IFLA type: 54
Unknown host QEMU_IFLA type: 32820
Unknown host QEMU_IFLA type: 56
Unknown host QEMU_IFLA type: 57
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  apt-clone archdetect-deb bogl-bterm busybox-static cryptsetup-bin dctrl-tools dpkg-repack gir1.2-timezonemap-1.0 gir1.2-xkl-1.0
  grub-common libdebian-installer4 libtimezonemap-data libtimezonemap1 ncurses-term openssh-sftp-server os-prober python3-icu python3-pam
  rdate tasksel tasksel-data
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  dpkg-dev fakeroot g++ g++-9 libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libstdc++-9-dev
Suggested packages:
  debian-keyring gcc-9-doc libstdc++-9-doc
The following NEW packages will be installed:
  build-essential dpkg-dev fakeroot g++ g++-9 libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libstdc++-9-dev
0 upgraded, 9 newly installed, 0 to remove and 5 not upgraded.
Need to get 9347 kB of archives.
After this operation, 42,1 MB of additional disk space will be used.
Get:1 http://ports.ubuntu.com/ubuntu-ports focal-updates/main arm64 libstdc++-9-dev arm64 9.4.0-1ubuntu1~20.04.2 [1687 kB]
Get:2 http://ports.ubuntu.com/ubuntu-ports focal-updates/main arm64 g++-9 arm64 9.4.0-1ubuntu1~20.04.2 [6843 kB]
Get:3 http://ports.ubuntu.com/ubuntu-ports focal/main arm64 g++ arm64 4:9.3.0-1ubuntu2 [1592 B]
Get:4 http://ports.ubuntu.com/ubuntu-ports focal-updates/main arm64 dpkg-dev all 1.19.7ubuntu3.2 [679 kB]
Get:5 http://ports.ubuntu.com/ubuntu-ports focal-updates/main arm64 build-essential arm64 12.8ubuntu1.1 [4664 B]
Get:6 http://ports.ubuntu.com/ubuntu-ports focal/main arm64 fakeroot arm64 1.24-1 [61,9 kB]
Get:7 http://ports.ubuntu.com/ubuntu-ports focal/main arm64 libalgorithm-diff-perl all 1.19.03-2 [46,6 kB]
Get:8 http://ports.ubuntu.com/ubuntu-ports focal/main arm64 libalgorithm-diff-xs-perl arm64 0.04-6 [11,1 kB]
Get:9 http://ports.ubuntu.com/ubuntu-ports focal/main arm64 libalgorithm-merge-perl all 0.08-3 [12,0 kB]
Fetched 9347 kB in 9s (1029 kB/s)

I am stuck after this message, the command is still running I can see it in top from the host system (outside chroot).

Does anyone face the same issue or know how to solve it ?

Thanks

I also fixed the broken packages but none were.

I can ping :

ping -c 2 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=112 time=73.0 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=112 time=70.4 ms


--- 8.8.8.8 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1003ms
rtt min/avg/max/mdev = 70.351/71.656/72.962/1.305 ms
3

Hi,

I don’t know what you mean with this.
Why you said I am stuck and the command is still running at the same time?
Please also put all commands you ran before chrooting into the rootfs.

Anyway, the right way of doing it is to customize the rootfs before flashing yourself:
https://docs.nvidia.com/jetson/archives/r35.5.0/DeveloperGuide/SD/RootFileSystem.html

4

Hello,
It waits after this mesage for ages but from outside the chroot I can see on htop that the command is still running (100% cpu on 1 core). I started by flashing a Jetson Xavier NX with the sdk.
Then I cloned the system : sudo ./flash.sh -r -k APP -G

I now want to cross compile some applications to run on the jetson.

For now I didn’t do anything on the jeston except : apt-get update && apt-get upgrade before to clone.

5

Then what’s the purpose of chroot here?

6

To cross compile I’m using chroot to install the dev packages on a dev image of the system, then I install the apps and libraries in a prod image, the prod image will be the image I will flash on my device

7

You should be using this.

9

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