why is interface speed undefined?

All of my ubuntu network interfaces (physical and other) are found, but the network speed is undefined:

Do I need to configure a setting, or reset a config file?

Hey, @jonwaland. Netdata gathers the speed by reading /sys/class/net/<iface>/speed (sysfs-class-net).

  Indicates the interface latest or current speed value. Value is
  an integer representing the link speed in Mbits/sec.

  Note: this attribute is only valid for interfaces that implement
  the ethtool get_link_ksettings method (mostly Ethernet).

So it is undefined if /sys/class/net/<iface>/speed returns -1 - ND doesn’t know the speed of the interface.

 walaj - jonlabnuc - SSH : sys / class / net / eno1 / $  uname -a
Linux jonlabnuc 5.4.0-165-generic #182-Ubuntu SMP Mon Oct 2 19:43:28 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
 walaj - jonlabnuc - SSH : sys / class / net / eno1 / $ cat speed

Ok, I think I just misunderstood your question. The speed is not undefined, it shows the value. It is wrong and should be 1000Mbit - fixed in 16418:

What is undefined is the interface_speed alarm - it just means that it has no trigger (warn, crit) conditions. That is expected, this alarm (calculated value) is used in other alarms.

Ah - my misunderstanding then - thanks!