[Bug 614351] Re: USB flash drive is not detected

[Rajesh]

I am using Acer Aspire Travelmate 290 Series and Ubuntu 10.04.  USB worked fine for few days but not any more.  When I type lsusb, this is the output:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

However, when I plug-in any usb flash drive, it is not shown anywhere (I see no way to access it).  Though this is what I see as the output of dmesg:
# dmesg | grep USB
[    2.512617] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    2.513017] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1
[    2.532026] ehci_hcd 0000:00:1d.7: USB 2.0 started, EHCI 1.00
[    2.532158] hub 1-0:1.0: USB hub found
[    2.532306] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    2.532329] uhci_hcd: USB Universal Host Controller Interface driver
[    2.532445] uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2
[    2.532597] hub 2-0:1.0: USB hub found
[    2.532982] uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3
[    2.533131] hub 3-0:1.0: USB hub found
[    2.533323] uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4
[    2.533477] hub 4-0:1.0: USB hub found
[  925.329490] Initializing USB Mass Storage driver...
[  925.329607] USB Mass Storage support registered.

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USB flash drive is not detected
https://bugs.launchpad.net/bugs/614351
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