The problem is not there in Ubuntu 12.04.2 (kernel 3.5.0-54) and it is there in Ubuntu 12.04.3 (kernel 3.8.0-44).
My test case is to boot with ip=dhcp break=top. When the problem doesn't exist, I get an initramfs prompt in 2 seconds, when it exists I get it in 12 seconds, and that shows up in dmesg as well. Comparing those configs from https://wiki.ubuntu.com/Kernel/Configs/QuantalToRaring, I got: 3.5: # CONFIG_IP_PNP is not set 3.8: CONFIG_IP_PNP=y CONFIG_IP_PNP_DHCP=y Is it possible to revert those? Can we find out why they were enabled? If they're only needed on some arches (e.g. ARM), maybe they could only be enabled there? @rhansen, writing an alias e.g. initramfs_ip=* won't help, e.g. IPAPPEND 3 in pxelinux puts ip=* in the cmdline, I don't think it'll ever be patched to put initramfs_ip=* there... I think we should either get the configuration change reverted, or fix ipconfig.c so that it aborts if no NICs/modules are detected. -- 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
