/srv/irclogs.ubuntu.com/2013/12/20/#ubuntu-kernel.txt

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imMuteso my kernel options include "console=ttyS0,115200n8" and even though I run "dmesg -n 7", KERN_DEBUG messages aren't printed to the console - I have to run dmesg to see them.  This is not the case on my other Linux machine - what is different about Ubuntu?02:17
xnoximMute: what is your full kernel options?02:53
imMutexnox: I don't have them presently, but the only thing changed from the default was that and "console=tty0"03:17
apwimMute, loglevel=7 or whatever on the kernel command line allows you to have more out there on the console09:16
imMuteapw: tried loglevel=7 and loglevel=8 and neither makes KERN_DEBUG messages show up15:27
apwimMute, i would expect them to come out at loglevel=8, of course nothing comes out until printk is up and running so it dpeend just how early things break17:54
apwimMute, and there seem to also be an 'ignore_loglevel' to turn it off17:56
apwMODULE_PARM_DESC(ignore_loglevel, "ignore loglevel setting, to"17:56
apw        "print all kernel messages to the console.");17:56
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