I also get this issue. E.g., from kern.log:
May 27 21:15:14 MacKubuntu kernel: [ 3003.296119] usb 3-1: reset full speed USB
device using uhci_hcd and address 4
May 27 21:15:14 MacKubuntu kernel: [ 3003.360168] pm_op():
usb_dev_resume+0x0/0x10 returns -19
May 27 21:15:14 MacKubuntu kernel: [ 3003.360171] PM: Device 3-1 failed to
resume: error -19
May 27 21:15:14 MacKubuntu kernel: [ 3003.360410] PM: resume devices took 4.260
seconds
May 27 21:15:14 MacKubuntu kernel: [ 3003.361146] PM: Finishing wakeup.
May 27 21:15:14 MacKubuntu kernel: [ 3003.361147] Restarting tasks ... done.
May 27 21:15:14 MacKubuntu kernel: [ 3003.688140] usb 3-1: USB disconnect,
address 4
May 27 21:15:14 MacKubuntu kernel: [ 3003.928109] usb 3-1: new full speed USB
device using uhci_hcd and address 5
May 27 21:15:14 MacKubuntu kernel: [ 3004.113609] usb 3-1: configuration #1
chosen from 1 choice
If I do lsusb -v I see that usb 3-1 is:
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0001 1.1 root hub
bcdDevice 2.06
iManufacturer 3
iProduct 2
iSerial 1
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0 Unused
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0002 1x 2 bytes
bInterval 255
can't get hub descriptor: Operation not permitted
cannot read device status, Operation not permitted (1)
So it looks like it's some sort of internal hub (I don't have any sort
of external hub attached - this is on a Macbook Pro)
I hope this might be of some help.
--
Jaunty - Error messages in (kern.log) during resume
https://bugs.launchpad.net/bugs/356049
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