@rhansen, your bug might be a different one, since ip=dhcp is processed by the initramfs, while I'm talking about the kernel, before the initramfs gets to run.
The bug is still there in Xenial. I noticed that it doesn't happen in all hardware; I've seen it in *some* real clients and under VirtualBox, while I haven't been able to reproduce it under KVM. Example from Xenial: $ grep 'model name' /proc/cpuinfo model name : Intel(R) Core(TM) i5-4590 CPU @ 3.30GHz $ dmesg ... [ 1.224044] usb 3-4: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes [ 1.677095] tsc: Refined TSC clocksource calibration: 3292.375 MHz [ 1.677134] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x2f75298baf3, max_idle_ns: 440795322961 ns [ 2.677286] clocksource: Switched to clocksource tsc [ 12.784911] PM: Hibernation image not present or could not be loaded. [ 12.785223] Freeing unused kernel memory: 936K (c1b6d000 - c1c57000) [ 12.785350] Write protecting the kernel text: 7816k [ 12.785450] Write protecting the kernel read-only data: 3120k [ 12.785502] NX-protecting the kernel data: 6520k [ 12.797220] random: systemd-udevd urandom read with 0 bits of entropy available ... I also tried with "nohibernate", it's not related to hibernation. ** Tags removed: kernel-fixed-upstream ** Tags added: xenial -- 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
