Can't mount USB3 flash drive

[Michael]

While trying to mount a USB3 flash drive I get errors like:

[ 88.961035] usb 4-2: reset SuperSpeed USB device number 2 using xhci_hcd
[ 88.976746] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88020f4465c0
[ 88.976757] xhci_hcd 0000:00:14.0: xHCI xhci_drop_endpoint called with disabled ep ffff88020f446580
[ 88.977319] sd 6:0:0:0: [sdb] Unhandled error code
[ 88.977321] sd 6:0:0:0: [sdb]
[ 88.977323] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[ 88.977324] sd 6:0:0:0: [sdb] CDB:
[ 88.977325] Read(10): 28 00 00 00 12 53 00 00 f0 00
[ 88.977331] end_request: I/O error, dev sdb, sector 4691

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-17-generic 3.13.0-17.37
ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6
Uname: Linux 3.13.0-17-generic x86_64
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: michael 1943 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Mar 11 23:22:03 2014
InstallationDate: Installed on 2014-03-07 (4 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140306)
MachineType: LENOVO 34481Y2
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.13.0-17-generic.efi.signed root=UUID=d6f1faeb-4441-407a-a989-97022eb7a6a6 ro rootflags=subvol=@ quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-17-generic N/A
 linux-backports-modules-3.13.0-17-generic N/A
 linux-firmware 1.126
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/19/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: G6ETA3WW (2.63 )
dmi.board.asset.tag: Not Available
dmi.board.name: 34481Y2
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrG6ETA3WW(2.63):bd02/19/2014:svnLENOVO:pn34481Y2:pvrThinkPadX1Carbon:rvnLENOVO:rn34481Y2:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 34481Y2
dmi.product.version: ThinkPad X1 Carbon
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.13 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-rc6-trusty/

[Michael (mig000)]

Appears to be fixed in 3.14.0-031400rc6-generic upstream.

[Michael (mig000)]

Changing the tag to kernel-bug-exists-upstream as the problem actually reappeared with the 3.14.0-031400rc6-generic upstream kernel. I will attach new details / dmesg output.

[Joseph Salisbury (jsalisbury)]

This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report[0]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.

Please follow the instructions on the wiki page[0]. The first step is to email the appropriate mailing list. If no response is received, then a bug may be opened on bugzilla.kernel.org.

Once this bug is reported upstream, please add the tag: 'kernel-bug-reported-upstream'.

[0] https://wiki.ubuntu.com/Bugs/Upstream/kernel

[Michael (mig000)]

Unfortunately I don't have access to the hardware anymore.