Chiming in on this...
Feisty on kernel 2.6.20-16-generic #2
System is a Dell Inspiron 600m
lspci -v says the USB interface is thus:
USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI
Controller
Device is a low-profile laptop HD USB adapter.
lsusb -v says:
Bus 002 Device 005: ID 04b4:6830 Cypress Semiconductor Corp. USB-2.0 IDE Adapter
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x04b4 Cypress Semiconductor Corp.
idProduct 0x6830 USB-2.0 IDE Adapter
bcdDevice 0.01
iManufacturer 56 Cypress Semiconductor
iProduct 78 USB2.0 Storage Device
iSerial 100 DEF106F1A17F
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk (Zip)
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x88 EP 8 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
bNumConfigurations 1
Device Status: 0x0001
Self Powered
Plugging it in gives me:
[ 124.064000] usb 4-1.1: new high speed USB device using ehci_hcd and address 4
[ 124.156000] usb 4-1.1: configuration #1 chosen from 1 choice
[ 124.336000] usbcore: registered new interface driver libusual
[ 124.348000] Initializing USB Mass Storage driver...
[ 124.348000] scsi2 : SCSI emulation for USB Mass Storage devices
[ 124.348000] usbcore: registered new interface driver usb-storage
[ 124.348000] USB Mass Storage support registered.
[ 124.348000] usb-storage: device found at 4
[ 124.348000] usb-storage: waiting for device to settle before scanning
[ 129.348000] usb-storage: device scan complete
[ 134.920000] usb 4-1.1: reset high speed USB device using ehci_hcd and
address 4
[ 145.084000] usb 4-1.1: reset high speed USB device using ehci_hcd and
address 4
[ 150.248000] usb 4-1.1: reset high speed USB device using ehci_hcd and
address 4
[ 160.412000] usb 4-1.1: reset high speed USB device using ehci_hcd and
address 4
[ 160.504000] scsi 2:0:0:0: scsi: Device offlined - not ready after error
recovery
Removing ehci_hcd is an effective workaround for me.
--
USB mass storage stops working after a while
https://bugs.launchpad.net/bugs/61235
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