Hello everyone, I've recently bought an Acer Aspire Switch 11 convertible tablet/notebook hybrid device. Ubuntu 14.04.2 with kernel 3.16 runs almost perfectly, with one notable exception: on the keyboard dock, only the touchpad works, not the keyboard itself. I've done a bit of digging in the logs, and found the following error messages relating to HID: [ 8.790574] hidraw: raw HID events driver (C) Jiri Kosina [ 8.796341] hid (null): usage index exceeded [ 8.845668] usbcore: registered new interface driver usbhid [ 8.845671] usbhid: USB HID core driver [ 19.593717] hid-multitouch 0003:06CB:2991.0002: input,hiddev0,hidraw0: USB HID v1.10 Mouse [ITE Tech. Inc. ITE Device(8595)] on usb-0000:00:14.0-4.3/input1 [ 19.594268] hid-rmi 0003:06CB:2991.0001: usage index exceeded [ 19.594274] hid-rmi 0003:06CB:2991.0001: item 0 2 2 2 parsing failed [ 19.594288] hid-rmi 0003:06CB:2991.0001: parse failed [ 19.594301] hid-rmi: probe of 0003:06CB:2991.0001 failed with error -22 [ 19.609228] hid-multitouch 0018:06CB:77B2.0004: input,hidraw1: <UNKNOWN> HID v1.00 Mouse [SYNA7508:00 06CB:77B2] on [ 19.924619] i2c_hid i2c-ITE8380:00: error in i2c_hid_init_report size:19 / ret_size:18 The device in question has two endpoints: T: Bus=02 Lev=02 Prnt=04 Port=02 Cnt=01 Dev#= 7 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=06cb ProdID=2991 Rev=00.06 S: Manufacturer=ITE Tech. Inc. S: Product=ITE Device(8595) C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=01 Driver=usbhid I: If#= 1 Alt= 0 #EPs= 2 Cls=03(HID ) Sub=01 Prot=02 Driver=usbhid According to lsusb, the second one is a mouse (= touchpad), while the first one is a keyboard (see attached lsusb.txt). Judging from the dmesg, this is also the one which fails to initialize. Can anyone suggest any quirks/fixes to try here? Thanks & best regards, Florian -- SENT FROM MY DEC VT50 TERMINAL
Bus 002 Device 007: ID 06cb:2991 Synaptics, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x06cb Synaptics, Inc.
idProduct 0x2991
bcdDevice 0.06
iManufacturer 1 ITE Tech. Inc.
iProduct 2 ITE Device(8595)
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 66
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 100mA
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 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 188
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 0x0040 1x 64 bytes
bInterval 4
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 2 Mouse
iInterface 1 ITE Tech. Inc.
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 379
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
Device Status: 0x0001
Self Powered
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