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Message #112337
[Bug 1437492] Re: boot stalls on USB detection errors
I don't have any old kernels around.
Yes, I believe this to be a regression, since I don't recall having this slow boot long time ago.
Interestingly GRUB to LightDM with systemd is 45 seconds.
While GRUB to LightDM with upstart is 10 seconds (then I have to wait about half a minute for the USB devices to get initialised)
$ lsusb
Bus 004 Device 002: ID 8087:8000 Intel Corp.
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 8087:8008 Intel Corp.
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 174c:3074 ASMedia Technology Inc.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 006: ID 045e:0047 Microsoft Corp. IntelliMouse Explorer 3.0
Bus 001 Device 007: ID 046d:c313 Logitech, Inc. Internet 350 Keyboard
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
$ lsusb -s 1
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Since the slow delayed boot remained even after plugging out my USB
keyboard and USB mouse, it seems the culprit is the internal USB hub on
the Intel Z87 (Haswell) chipset.
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https://bugs.launchpad.net/bugs/1437492
Title:
boot stalls on USB detection errors
Status in linux package in Ubuntu:
Confirmed
Bug description:
My system boots slow. I investigated this and it seems systemd-udev-settle.service is the culprit.
My system runs ext4 with GPT on UEFI.
I do not use encryption or LVM.
$ journalctl -u systemd-udev-settle
-- Logs begin at fri 2015-03-27 19:03:06 CET, end at fri 2015-03-27 22:06:32 CET. --
mar 27 19:03:42 hostname systemd[1]: Started udev Wait for Complete Device Initialization.
$ systemd-analyze
Startup finished in 14.865s (firmware) + 11.133s (loader) + 6.127s (kernel) + 42.079s (userspace) = 1min 14.206s
$ systemd-analyze critical-chain
http://paste.ubuntu.com/10691416/
$ systemd-analyze blame
36.013s systemd-udev-settle.service
http://paste.ubuntu.com/10691314/
$ systemctl show systemd-udev-settle.service -p RequiredBy
RequiredBy=
$ systemctl show systemd-udev-settle.service -p WantedBy
WantedBy=friendly-recovery.service
$ systemd-analyze plot > boot.svg
http://imgh.us/boot_1.svg
$ systemd-analyze dump
http://paste.ubuntu.com/10691856/
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: systemd 219-5ubuntu1
ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
Uname: Linux 3.19.0-10-generic x86_64
ApportVersion: 2.16.2-0ubuntu5
Architecture: amd64
CurrentDesktop: GNOME-Flashback:Unity
Date: Fri Mar 27 22:05:28 2015
InstallationDate: Installed on 2013-12-26 (455 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: ASUS All Series
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-10-generic.efi.signed root=UUID=31dc4488-28d4-4d2a-aa51-6733e237d5f8 ro quiet splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/18/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2103
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: Z87-PRO
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2103:bd08/18/2014:svnASUS:pnAllSeries:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnZ87-PRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: All Series
dmi.product.version: System Version
dmi.sys.vendor: ASUS
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