I have been seeing this on multiple machines since trusty (at least). I'm currently running wily.
I noticed that if I remove the 'ip=dhcp' kernel command line parameter then the 10 second delay goes away. (I added ip=dhcp so that I could ssh into the initramfs to unlock the encrypted root device from remote.) I'm not sure why 'ip=dhcp' causes that delay. I was able to rule out the initramfs—I modified /usr/share/initramfs-tools/init to print the contents of /proc/uptime as early as possible. According to the logged time, init doesn't start running until after the 10 second pause (unless mounting /proc takes 10 seconds when ip=dhcp is in the command line arguments, which I doubt). -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1259861 Title: 5-10 second delay in kernel boot Status in linux package in Ubuntu: Confirmed Bug description: In Trusty I see a big delay while the kernel boots that I did not see back in Precise. Some people have been experiencing this in Saucy too, so I don't know exactly when it started happening. Excerpt from dmesg: [ 3.740100] Switched to clocksource tsc [ 14.208118] PM: Hibernation image not present or could not be loaded. [ 14.208885] Freeing unused kernel memory: 864K (c19ac000 - c1a84000) The exact messages above don't matter, they are different on different boots or on different machines. It even happens with e.g. $ sudo kvm -m 768 -cdrom trusty-desktop-i386.iso My current kernel is Linux server 3.12.0-7-generic #15-Ubuntu SMP Sun Dec 8 23:42:09 UTC 2013 i686 i686 i686 GNU/Linux ...but the exact version, maybe from 3.8 to 3.12+, shouldn't matter, just run `dmesg` yourself and check if there's a big delay there. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1259861/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
