Apt-get update errors

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

When I use the ‘sudo apt-get update’ command after restoring the default source, I get the following error.
This is the log after the command is used:

root@jetsond509-desktop:/etc/apt# sudo apt-get update
Err:1 https://repo.download.nvidia.com/jetson/common r32.7 InRelease
Could not resolve ‘repo.download.nvidia.com’
Err:2 Index of /ubuntu-ports bionic-security InRelease
Could not resolve ‘ports.ubuntu.com’
Err:3 Index of /ubuntu bionic InRelease
Could not resolve ‘us.archive.ubuntu.com’
Err:4 https://repo.download.nvidia.com/jetson/t210 r32.7 InRelease
Could not resolve ‘repo.download.nvidia.com’
Err:5 Index of /ubuntu bionic-updates InRelease
Could not resolve ‘us.archive.ubuntu.com’
Err:6 Index of /ubuntu-ports bionic InRelease
Could not resolve ‘ports.ubuntu.com’
Err:7 Index of /ubuntu bionic-backports InRelease
Could not resolve ‘us.archive.ubuntu.com’
Reading package lists… Done
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/bionic/InRelease Could not resolve ‘us.archive.ubuntu.com’
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease Could not resolve ‘us.archive.ubuntu.com’
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease Could not resolve ‘us.archive.ubuntu.com’
W: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/bionic-security/InRelease Could not resolve ‘ports.ubuntu.com’
W: Failed to fetch http://ports.ubuntu.com/ubuntu-ports/dists/bionic/InRelease Could not resolve ‘ports.ubuntu.com’
W: Failed to fetch https://repo.download.nvidia.com/jetson/common/dists/r32.7/InRelease Could not resolve ‘repo.download.nvidia.com’
W: Failed to fetch https://repo.download.nvidia.com/jetson/t210/dists/r32.7/InRelease Could not resolve ‘repo.download.nvidia.com’
W: Some index files failed to download. They have been ignored, or old ones used instead.

3

Hi,

Are you sure the Internet connection is alive?

4

Yes, access to normal web pages is no problem。

5

It also fails with the default Ubuntu repos, so please check it first.

6

I didn’t remove default Ubuntu repos, just added some new ones

7

I mean please figure out why you have this.

8

Do you errors or success from:

host ubuntu.com
host archive.ubuntu.com
host us.archive.ubuntu.com
host ports.ubuntu.com

Note that one dotted-decimal IP address for ports.ubuntu.com is:
185.125.190.39

If and only if you fail to resolve “host ports.ubuntu.com”, are you able to:
ping 185.125.190.39

What I’m doing is separating the problem into DNS versus routes.

10

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