Public bug reported:
I don't believe I was really even actively accessing the disk at the
time this occurred (but not 100% sure). I only noticed when I tried to
access my files, and found that the volume mysteriously unmounted. This
is all on Ubuntu 10.04 64-bit, and I'm using a WD10000H1Q-00.
Interesting section from dmesg:
[1143107.160067] usb 2-4: reset high speed USB device using ehci_hcd and address
2
[1143122.280044] usb 2-4: device descriptor read/64, error -110
[1143137.510045] usb 2-4: device descriptor read/64, error -110
[1143137.740052] usb 2-4: reset high speed USB device using ehci_hcd and
address 2
[1143152.860038] usb 2-4: device descriptor read/64, error -110
[1143168.090074] usb 2-4: device descriptor read/64, error -110
[1143168.320034] usb 2-4: reset high speed USB device using ehci_hcd and
address 2
[1143173.350192] usb 2-4: device descriptor read/8, error -110
[1143178.486281] usb 2-4: device descriptor read/8, error -110
[1143178.710048] usb 2-4: reset high speed USB device using ehci_hcd and
address 2
[1143183.740113] usb 2-4: device descriptor read/8, error -110
[1143188.870080] usb 2-4: device descriptor read/8, error -110
[1143188.980087] usb 2-4: USB disconnect, address 2
[1143188.980102] sd 6:0:0:0: Device offlined - not ready after error recovery
[1143189.210049] usb 2-4: new high speed USB device using ehci_hcd and address 5
[1143204.330041] usb 2-4: device descriptor read/64, error -110
[1143219.560045] usb 2-4: device descriptor read/64, error -110
[1143219.790051] usb 2-4: new high speed USB device using ehci_hcd and address 6
[1143234.910064] usb 2-4: device descriptor read/64, error -110
[1143250.140047] usb 2-4: device descriptor read/64, error -110
[1143250.370102] usb 2-4: new high speed USB device using ehci_hcd and address 7
[1143255.400196] usb 2-4: device descriptor read/8, error -110
[1143260.530161] usb 2-4: device descriptor read/8, error -110
[1143260.760069] usb 2-4: new high speed USB device using ehci_hcd and address 8
[1143265.790111] usb 2-4: device descriptor read/8, error -110
[1143270.920196] usb 2-4: device descriptor read/8, error -110
[1143271.030032] hub 2-0:1.0: unable to enumerate USB device on port 4
[1143271.350064] usb 6-2: new full speed USB device using uhci_hcd and address 2
[1143286.470042] usb 6-2: device descriptor read/64, error -110
[1143301.700042] usb 6-2: device descriptor read/64, error -110
[1143301.930032] usb 6-2: new full speed USB device using uhci_hcd and address 3
[1143317.050052] usb 6-2: device descriptor read/64, error -110
[1143332.280049] usb 6-2: device descriptor read/64, error -110
[1143332.510068] usb 6-2: new full speed USB device using uhci_hcd and address 4
[1143337.531560] usb 6-2: device descriptor read/8, error -110
[1143342.661899] usb 6-2: device descriptor read/8, error -110
[1143342.890029] usb 6-2: new full speed USB device using uhci_hcd and address 5
[1143347.911231] usb 6-2: device descriptor read/8, error -110
[1143353.041576] usb 6-2: device descriptor read/8, error -110
[1143353.150051] hub 6-0:1.0: unable to enumerate USB device on port 2
[1145132.384663] lo: Disabled Privacy Extensions
[1146055.095917] lo: Disabled Privacy Extensions
[1146255.310030] usb 6-2: new full speed USB device using uhci_hcd and address 6
[1146270.430027] usb 6-2: device descriptor read/64, error -110
According to /var/log/syslog, which is duplicating these log messages
but with timestamps, all these messages take place within 5 minutes; I
had noticed this about 40 minutes later.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-24-generic 2.6.32-24.41
Regression: No
Reproducible: No
ProcVersionSignature: Ubuntu 2.6.32-24.39-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: yang 27759 F.... pulseaudio
/dev/snd/pcmC0D0p: yang 27759 F...m pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xdffdc000 irq 16'
Mixer name : 'SigmaTel STAC9227'
Components : 'HDA:83847618,102801db,00100201'
Controls : 36
Simple ctrls : 23
Date: Fri Aug 27 00:49:22 2010
Frequency: This has only happened once.
HibernationDevice: RESUME=UUID=884dbe0f-24c0-4240-8eef-5398589e109b
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: Dell Inc. Dell DXP061
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-24-generic
root=UUID=939b7371-2fbb-49d7-a29b-7e22b47c867a ro quiet splash
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34.1
RfKill:
SourcePackage: linux
dmi.bios.date: 05/24/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.5.0
dmi.board.name: 0CT017
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 7
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr2.5.0:bd05/24/2007:svnDellInc.:pnDellDXP061:pvr:rvnDellInc.:rn0CT017:rvr:cvnDellInc.:ct7:cvr:
dmi.product.name: Dell DXP061
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug lucid needs-upstream-testing
--
USB HDD spontaneously spews read errors/hub enumeration errors, gets unmounted
https://bugs.launchpad.net/bugs/625162
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