Well, I'm not sure that my netconsole got working during the initrd stage (first, I suspected that the module was not loaded in initrd -- http://askubuntu.com/q/676707/19753 , but then I found out that there is code for this to happen if there is the "netconsole" kernel parameter present, so perhaps, my network interface didn't get started in the initrd), but I've got some logs from crashing/rebooting cases (as well as from one successful).
Now, I'm attaching the shortest log from a failed boot. There is not really much useful information as to the cause of the crash there. (And now I'm upgrading to 15.10 (Wily) in the hope that this bug has simply been fixed somewhere in the kernel/drivers/udev, so that I'll overcome this in this simple way. Because localizing the bug is not so simple.) I'm going to post another longer log from a failed boot, too. Perhaps, someone will have some ideas. I'll repeat now that the crash seems to occur after udev is becoming active. ** Attachment added: "2015-09-21T19:39+0300-kdebug.txt" https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/1495116/+attachment/4470650/+files/2015-09-21T19%3A39%2B0300-kdebug.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1495116 Title: booting with amd64 kernel and completely i386 userland is unstable during the system upstart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1495116/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs