Evgeny Gridasov, thank you for taking the time to report this bug and helping
to make Ubuntu better. Please execute the following command, as it will
automatically gather debugging information, in a terminal:
apport-collect 1261744
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** Package changed: linux-lts-saucy (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Importance: Undecided => Low
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1261744
Title:
Ubuntu 13.10 x64 kernel 3.11.0-14-generic crash
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
On a Dell Poweredge 720, Kubuntu 13.10 x64, LInux Kernel 3.11.0-14-generic,
when setting /etc/sysctl.conf:
kernel.sched_autogroup_enabled=0
Kernel fails to boot. This error is 100% reproducible and when I comment out
that line in sysctl.conf everything works fine.
The machine is 2x Xeon E2670 with 64GB of RAM, I've attached lspci output and
also dmesg output during a normal boot.
It starts failing when it detects hard drives, right after it
detected ixgbe network driver and when systemd starts to launch
programs. If I boot it in safe mode with that option set to 0 and then
choose resume in the menu, everything works fine. Apparently when
systemd starts something that conflicts with the hard drive detection
when autogroup_enabled=0.
I've attached screen shots from the KVM.
Please let me know if you need any other information.
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