Interpreting dmesg output

pwabrahams · 09-02-2008, 11:52 AM

A typical line that I get from dmesg is

Code:

[75573.981776] usb 3-1: USB disconnect, address 4

What does the text in square brackets mean? How can I see the time of the message?

In other systems I've been running, the time shows up explicitly in the dmesg output. I'm running Kubuntu 8.04.

unSpawn · 09-02-2008, 01:14 PM

Looks like time-since-boot. Doesn't the message show up in your syslog?

Matir · 09-02-2008, 01:27 PM

That is indeed a time-since-boot (in seconds, I believe). On what system has dmesg shown actual times? I've actually never seen that.