Are the numbers inside the blocks are in some sort of date format?

[  1613.015] (II) config/udev: Adding input device HDA Digital PCBeep (/dev/input/event16)
[  1613.015] (II) No input driver specified, ignoring this device.
[  1613.015] (II) This device may have been added with another device file.
[  1613.016] (II) config/udev: Adding input device HDA Intel PCH Mic (/dev/input/event17)

1 Answer 1


It's a timestamp. It indicates the time since the system last booted, in seconds.

If you are running Linux then you can find the same number as the first field of the contents of /proc/uptime.

  • Any idea why an event that happened just now in the Xorg says [2123343.758] while uptime says 6418311.05 204951697.98 (System's been up for 74 days and does not sleep or hibernate). Xorg has been running for ~7 days and gdm for 74 days. Nothing correlates with 24 days ago - Fedora 33
    – Andy
    Jul 19, 2021 at 23:13
  • 1
    @Andy: the timestamp from Xorg wraps around after ca. 49 days (when the time gets larger than 2^32 milliseconds). This fits very well to your system uptime; so maybe you see the timestamp from the gdm-started Xorg. Btw. sorry for resurrecting this old post, but the info might be useful to other people :-)
    – oliver
    May 2, 2022 at 11:07

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