On Friday, December 20, 2013 04:05:09 Zbigniew Jędrzejewski-Szmek wrote: > On Thu, Dec 19, 2013 at 09:11:17PM -0500, Garry T. Williams wrote: > > I see these messages in my journal: > > > > Dec 19 20:58:57 tfr systemd[1]: Started Load/Save Screen Backlight > > Brightness of acpi_video0. > > > > Why is the message repeated so many times? > Usually because something resets the brightness all the time and/or > the kernel reports brightness levels through udev events. The > journal itself has nothing to with this.
OK, I get the bit about the journal. I found sort of the source of this: garry@tfr$ udevadm monitor monitor will print the received events for: UDEV - the event which udev sends out after rule processing KERNEL - the kernel uevent KERNEL[6722.903153] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) KERNEL[6722.904958] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) KERNEL[6722.906931] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) KERNEL[6722.909084] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) KERNEL[6722.910965] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) KERNEL[6722.913139] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) UDEV [6722.913336] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) KERNEL[6722.915996] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) UDEV [6722.916708] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) UDEV [6722.916778] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) UDEV [6722.917165] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) UDEV [6722.917525] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) UDEV [6722.917986] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) UDEV [6722.918265] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) KERNEL[6722.920045] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) UDEV [6722.920410] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) KERNEL[6722.924880] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) UDEV [6722.925270] change /devices/pci0000:00/0000:00:02.0/backlight/acpi_video0 (backlight) ^C% garry@tfr$ I got this output by hitting (only once) Fn+F4. So, I guess it's the kernel reporting the event nine times. I wonder why that happens... -- Garry T. Williams _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
