USB Hub does not mount the USB devices

[Antonio Augusto de Sá Neto]

USB Hub doesn't mount the USB devices correctly. The Hub mounts some devices, does not mounts another and I can not insert another USB Hub inside it and agreegate USB ports. The system does not mount correctly and accurately the USB devices when using USB hubs. This is the bug.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: udev 204-5ubuntu20.2
ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
Uname: Linux 3.13.0-27-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CurrentDesktop: GNOME
Date: Mon Jun 2 19:01:14 2014
GvfsMonitorLog: Monitoring events. Press Ctrl+C to quit.
HotplugNewDevices: /dev/sde1 /dev/sde
HotplugNewMounts:

InstallationDate: Installed on 2014-05-30 (3 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: System manufacturer System Product Name
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-27-generic root=UUID=cd35f223-f2ea-4470-b8d1-014a6008deb8 ro locale=pt_BR quiet splash vt.handoff=7
SourcePackage: systemd
Symptom: storage
Title: Removable storage device not detected as block device
UdisksMonitorLog:
 Monitoring the udisks daemon. Press Ctrl+C to exit.
 19:01:39.045: The udisks-daemon is running (name-owner :1.68).
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/01/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0502
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M5A78L-M LX/BR
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0502:bd12/01/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM5A78L-MLX/BR:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

[Filip Sohajek (filip-sohajek-deactivatedaccount)]

Did you try to plug USB device to different hub port?

[Martin Pitt (pitti)]

Indeed, lots of USB port resets in https://launchpadlibrarian.net/176813239/CurrentDmesg.txt. I suppose the port that the hub is connected to is simply unable to provide enough power for all devices on the hub, or there is a bad USB cable or other hardware problem. Please try the USB device on a different USB port that's connected directly to the computer; if the device has its own power supply, try a different cable, or a different hub to isolate the problem?

[Emad Bahrami (bashma)]

i try to connect my USB device to computer but it did not work also i can not see my USB in the {fdisk -l} result
but i have not any problem to connect some flash USB devices
i do not know how can i fix my problem
please help me

[Emad Bahrami (bashma)]

yes
The problem is not port
and my system have not any problem while i connect them some another flash devices

[Emad Bahrami (bashma)]

it have not any problem in a windows device

[Emad Bahrami (bashma)]

i can not see my USB in disks app or in [ fdisk -l ] result
but i can see my flash USB in [ lsbsk ] result