On Sat, Apr 7, 2012 at 5:46 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
> On Sat, 7 Apr 2012, Manuel Lauss wrote:
>
>> Starting some time before 3.4-rc1, I get the messages below. Happens
>> regardless of
>> the port the device is plugged into or if it's behind a hub or not.
>> 3.3.X and earlier are
>> not affected.
>
> Are you saying that the problems started during the merge window?
>
>> Device is a Logitech wireless mouse/kbd dongle in standard mode (not bluetooth),
>> usb are amd sb800 and nec xhci controllers.
>>
>> Any ideas where to look?
>
> Most likely the wireless receiver is malfunctioning. The "port
> disabled by hub (EMI?)" message will not appear unless the upstream
> port hardware disables its connection to the device; this is not under
> the control of the OS.
>
> However, if you think a software change is at fault then bisection is
> probably the best approach.
Tracked it to 0846e7e9856c0928223447d9349a877202a63f24
(usb: Add support for indicating whether a port is removable)
Indeed, just not exposing the attribute fixes it, so userspace is doing
something (stupid?) to the device, although I have no idea what (yet).
Thanks,
Manuel Lauss
Here's some information on the device, in case it helps:
Bus 004 Device 002: ID 046d:0b02 Logitech, Inc. BT Mini-Receiver (HID
proxy mode)
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 003: ID 046d:c70b Logitech, Inc. BT Mini-Receiver (HID
proxy mode)
Bus 004 Device 004: ID 046d:c70c Logitech, Inc. BT Mini-Receiver (HID
proxy mode)
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=ohci_hcd/5p, 12M
|__ Port 2: Dev 2, If 0, Class=hub, Driver=hub/3p, 12M
|__ Port 2: Dev 3, If 0, Class=HID, Driver=usbhid, 12M
|__ Port 3: Dev 4, If 0, Class=HID, Driver=usbhid, 12M
Bus 004 Device 002: ID 046d:0b02 Logitech, Inc. BT Mini-Receiver (HID
proxy mode)
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0 Unused
bDeviceProtocol 0 Full speed (or root) hub
bMaxPacketSize0 8
idVendor 0x046d Logitech, Inc.
idProduct 0x0b02 BT Mini-Receiver (HID proxy mode)
bcdDevice 40.06
iManufacturer 1 Logitech
iProduct 2 Logitech BT Mini-Receiver
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 25
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
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 0x0001 1x 1 bytes
bInterval 255
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 3
wHubCharacteristic 0x0004
Ganged power switching
Compound device
Ganged overcurrent protection
bPwrOn2PwrGood 50 * 2 milli seconds
bHubContrCurrent 100 milli Ampere
DeviceRemovable 0x0c
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0103 power enable connect
Port 3: 0000.0103 power enable connect
Device Status: 0x0000
(Bus Powered)
Bus 004 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 3.04
iManufacturer 3 Linux 3.4.0-rc1-00508-g0d5c648 ohci_hcd
iProduct 2 OHCI Host Controller
iSerial 1 0000:00:12.0
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
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 5
wHubCharacteristic 0x0002
No power switching (usb 1.0)
Ganged overcurrent protection
bPwrOn2PwrGood 2 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0103 power enable connect
Port 3: 0000.0100 power
Port 4: 0000.0100 power
Port 5: 0000.0100 power
Device Status: 0x0001
Self Powered
Bus 004 Device 003: ID 046d:c70b Logitech, Inc. BT Mini-Receiver (HID
proxy mode)
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x046d Logitech, Inc.
idProduct 0xc70b BT Mini-Receiver (HID proxy mode)
bcdDevice 40.06
iManufacturer 1 Logitech
iProduct 2 Logitech BT Mini-Receiver
iSerial 3 00076146494E
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4 RR40.06_B0077
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 98mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 1 Keyboard
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 59
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 10
Device Status: 0x0000
(Bus Powered)
Bus 004 Device 004: ID 046d:c70c Logitech, Inc. BT Mini-Receiver (HID
proxy mode)
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x046d Logitech, Inc.
idProduct 0xc70c BT Mini-Receiver (HID proxy mode)
bcdDevice 40.06
iManufacturer 1 Logitech
iProduct 2 Logitech BT Mini-Receiver
iSerial 3 00076146494E
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4 RR40.06_B0077
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 98mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 0
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 226
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 5
Device Status: 0x0000
(Bus Powered)
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