DNS related issues with custom carrier board and L4T 35.3.1

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

Hi,

We are using custom carrier board for Jetson AGX Xavier. After we have updated our carrier board to use VSC8531XMW-05 ethernet PHY instead of KSZ9893RNXI and switched to L4T 35.3.1 (from 32.6.1) we started having DNS related problems. apt update fails with the following output:

test@agx:~$ sudo apt update
Err:1 Index of /ubuntu-ports focal InRelease
System error resolving ‘ports.ubuntu.com:80’ - getaddrinfo (16: Device or resource busy)
Err:2 https://repo.download.nvidia.com/jetson/common r35.3 InRelease
System error resolving ‘repo.download.nvidia.com:443’ - getaddrinfo (16: Device or resource busy)
Err:3 https://repo.download.nvidia.com/jetson/t194 r35.3 InRelease
System error resolving ‘repo.download.nvidia.com:443’ - getaddrinfo (16: Device or resource busy)
Err:4 Index of /ubuntu-ports focal-updates InRelease
System error resolving ‘ports.ubuntu.com:80’ - getaddrinfo (16: Device or resource busy)
Err:5 Index of /ubuntu-ports focal-backports InRelease
System error resolving ‘ports.ubuntu.com:80’ - getaddrinfo (16: Device or resource busy)
Err:6 Index of /ubuntu-ports focal-security InRelease
System error resolving ‘ports.ubuntu.com:80’ - getaddrinfo (16: Device or resource busy)
Reading package lists… Done
Building dependency tree
Reading state information… Done
All packages are up to date.
W: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/focal/InRelease System error resolving ‘ports.ubuntu.com:80’ - getaddrinfo (16: Device or resource busy)
W: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/focal-updates/InRelease System error resolving ‘ports.ubuntu.com:80’ - getaddrinfo (16: Device or resource busy)
W: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/focal-backports/InRelease System error resolving ‘ports.ubuntu.com:80’ - getaddrinfo (16: Device or resource busy)
W: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/focal-security/InRelease System error resolving ‘ports.ubuntu.com:80’ - getaddrinfo (16: Device or resource busy)
W: Failed to fetch https://repo.download.nvidia.com/jetson/common/dists/r35.3/InRelease System error resolving ‘repo.download.nvidia.com:443’ - getaddrinfo (16: Device or resource busy)
W: Failed to fetch https://repo.download.nvidia.com/jetson/t194/dists/r35.3/InRelease System error resolving ‘repo.download.nvidia.com:443’ - getaddrinfo (16: Device or resource busy)
W: Some index files failed to download. They have been ignored, or old ones used instead.

Pinging ports.ubuntu.com also fails:

test@ agx:~$ ping ports.ubuntu.com
ping: ports.ubuntu.com: Temporary failure in name resolution

File /etc/resolv.conf appears to be empty. After adding “nameserver 8.8.8.8” to the file, pinging ports.ubuntu.com starts working, but sudo apt update still fails exactly the same way.

No issues mentioned above are observed if we flash original AGX dev kit with L4T 35.3.1 (without the changes to device tree, etc. which we need to do to have it working with our custom carrier board).

Any ideas on what could be causing these DNS related issues would be greatly appreciated.

3

Sorry for the late response, have you managed to get issue resolved or still need the support? Thanks

4

Thank you, it turned out the issue was related to wrong permissions for folders: /etc; /etc/systemd; /etc/system; /usr; /usr/lib; /usr/lib/systemd; /usr/lib/systemd/system. Fixing the permissions results in the same apt behavior as with devkit.

6

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