Hello Benjamin, On 27.02.2015 01:46, Benjamin Tissoires wrote: > On Thu, Feb 26, 2015 at 6:18 PM, Florian Echtler <floe@xxxxxxxxxxxxxx> wrote: >> 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? > > Hi Florian, > > This was a known bug which has been fixed in a more recent kernel than > 3.16. I think a 3.17 might work, but I think a 3.18 would be a better > choice. > cf: e19ff99f256aeeff6c07b373e01883b72e049552 in Linus' tree thanks for the quick reply. I've tried both 3.18.7 and 3.19.0 kernels, but still get (slightly different) error messages: [ 2.550306] hidraw: raw HID events driver (C) Jiri Kosina [ 2.877672] hid (null): usage index exceeded [ 2.927474] usbcore: registered new interface driver usbhid [ 2.927476] usbhid: USB HID core driver [ 3.135496] i2c_hid i2c-ITE8380:00: error in i2c_hid_init_report size:19 / ret_size:18 [ 3.150002] hid-multitouch 0018:06CB:77B2.0002: input,hidraw0: <UNKNOWN> HID v1.00 Mouse [SYNA7508:00 06CB:77B2] on [ 3.150784] hid-multitouch 0003:06CB:2991.0004: input,hiddev0,hidraw1: USB HID v1.10 Mouse [ITE Tech. Inc. ITE Device(8595)] on usb-0000:00:14.0-4.3/input1 [ 3.153892] hid-generic 0003:06CB:2991.0003: usage index exceeded [ 3.153896] hid-generic 0003:06CB:2991.0003: item 0 2 2 2 parsing failed [ 3.153921] hid-generic: probe of 0003:06CB:2991.0003 failed with error -22 After a bit of digging through the kernel code, could it be that the 06CB:2991 device needs to be added to the hid_have_special_driver list (which AFAICT will only appear in 4.0)? Best regards, Florian -- SENT FROM MY DEC VT50 TERMINAL
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