On Fri, Feb 27, 2015 at 6:25 AM, Florian Echtler <floe@xxxxxxxxxxxxxx> wrote: > 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 Ouch. Now that I can see that, I remember that there was a half-backed solution here: https://patchwork.kernel.org/patch/5737231/ > > 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)? > If you just add the VID/PID to hid_have_special_driver, and nowhere else, your device will not work at all, nor the touchpad which shares the same VID/PID (see Andrew's answer). So this won't do :( Cheers, Benjamin > Best regards, Florian > -- > SENT FROM MY DEC VT50 TERMINAL > -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
