<html> <head> <meta content="text/html; charset=windows-1252" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">On 12/07/2014 01:31 PM, John Hupp wrote: </div> <blockquote cite="mid:5484AB26.80809@prpcompany.com" type="cite"> <meta content="text/html; charset=windows-1252" http-equiv="Content-Type"> .... </blockquote> <blockquote cite="mid:5484AB26.80809@prpcompany.com" type="cite"> Victory! I created /etc/sysctl.d/20-quiet-printk.conf with content: kernel.printk = 3 3 3 3 I hit Return at the end, since an End-Of-Line character may be required to make the line effective. This overrides the default behavior established in /etc/sysctl.d/10-console-messages.conf with content: kernel.printk = 4 4 1 7 The unwanted messages did not appear at the next boot (they are still available in /var/log/kern.log and syslog, however). I note that /etc/sysctrl.d/README instructs that 'service procps start' should be run after any changes, but this merely results in an output of 'unknown job: procps' and proved to be unnecessary anyway. The critical piece of instruction came from <a moz-do-not-send="true" href="https://wiki.archlinux.org/index.php/Silent_boot">https://wiki.archlinux.org/index.php/Silent_boot</a> Though I was curious to know a bit more about the mechanisms in play, I didn't dig much further than that. I wondered, for instance, what behavior the default '4 4 1 7' specified, but never did find out. The files in sysctl.d are installed by procps (see the List of Files link at <a moz-do-not-send="true" href="http://packages.ubuntu.com/trusty/admin/procps">http://packages.ubuntu.com/trusty/admin/procps</a>). And these, in turn, are part of the kernel configuration governed by sysctl (see <a moz-do-not-send="true" href="http://manpages.ubuntu.com/manpages/trusty/en/man8/sysctl.8.html">http://manpages.ubuntu.com/manpages/trusty/en/man8/sysctl.8.html</a>). Still looking for the meaning of '4 4 1 7' vs '3 3 3 3' I came to <a moz-do-not-send="true" href="https://www.kernel.org/doc/Documentation/printk-formats.txt">https://www.kernel.org/doc/Documentation/printk-formats.txt</a>, but my eyes glazed over just skimming that, and I stopped there. <fieldset class="mimeAttachmentHeader"></fieldset> </blockquote> Hi John, Very nice! I will have to save this e-mail and look up that info. This is quite informative to look at. I suppose I could create a startup script to do something like: [making DATE=$(date -I) or whatever format ] cp /var/log/kern.log ~/.kernlog-$DATE.log Thanks for your research John!! You always seem to find the answer once you start looking :) <pre class="moz-signature" cols="72">-- Regards</pre> </body> </html>