Public bug reported:
This bug is similar to #250317, but the symptons are quite different. I
have two external usb disks (iomega, 500 GB) that are configured in a
RAID-1 setup. The raid volume is supposed to be mounted while booting
and only contain data files They are plugged in all the time. I'm not
booting from the raid volume.
Despite a lot of dmesg warnings, the machine is still booting. It just
takes a little while before the "Unable to enumerate usb device"
warnings stop and the usb disks are recognized. It looks like a sort of
race condition because the warnings typically stop when there is a lot
of IO activity to keep the kernel busy for a few seconds. After that the
USB devices are working perfectly.
As far as I can recall, the problem appeared after a kernel upgrade in
ubuntu hardy and it still remains in the latest ubuntu ibex.
ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
Package: linux-image-2.6.27-11-generic 2.6.27-11.24
ProcCmdLine: root=UUID=d6b6c4df-fc14-46cc-8dbd-eeeefa4e56df ro nosplash
ProcEnviron:
PATH=/home/username/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/opt/bin
LANG=en_US.utf8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.27-11.24-generic
SourcePackage: linux
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug
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Unable to enumerate usb device
https://bugs.launchpad.net/bugs/318085
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