Hi, I just bought a new BLE HID device which I have a bit of a problem with. It mostly works but not fully. The device is an HP Elite Presenter Mouse: https://www.hp.com/emea_africa-en/products/accessories/product-details/23564275 A pretty neat little device. The one side of it has the typical presenter buttons for prev/next slide, a center click button and two more function buttons. When you press and hold the center button the device switches into a mouse mode and internal gyro/accellerometer is used to emulate a mouse and move the mouse pointer. In this presenter mode everything is working, including mouse pointer movement. The neat part is that you can twist the device in the middle and with that flip it over. The other side has two mouse buttons and a touch area emulating a scroll wheel. In this mouse mode I can see HCI traffing (hcidump) but no mouse events in Linux (no movement, no scroll wheel, no mouse button presses). I am using Debian 'testing' and GNOME desktop on Wayland. When the device connects I can see the following in dmesg: [23198.451500] input: HP Elite Presenter Mouse as /devices/virtual/misc/uhid/0005:03F0:464A.000C/input/input55 [23198.451962] input: HP Elite Presenter Keypad as /devices/virtual/misc/uhid/0005:03F0:464A.000C/input/input56 [23198.452280] input: HP Elite Presenter Consumer Control as /devices/virtual/misc/uhid/0005:03F0:464A.000C/input/input57 [23198.452572] hid-generic 0005:03F0:464A.000C: input,hidraw2: BLUETOOTH HID v0.18 Mouse [HP Elite Presenter] on xx:xx:xx:xx:xx:xx 'evtest' shows the following input ev devices: /dev/input/event20: HP Elite Presenter Mouse /dev/input/event21: HP Elite Presenter Keypad /dev/input/event22: HP Elite Presenter Consumer Control These are the attributes I can query (BT MAC redacted): [HP Elite Presenter]# list-attributes Primary Service (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0017 00001530-1212-efde-1523-785feabcd123 Vendor specific Characteristic (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0017/char001d 00001534-1212-efde-1523-785feabcd123 Vendor specific Characteristic (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0017/char001a 00001531-1212-efde-1523-785feabcd123 Vendor specific Descriptor (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0017/char001a/desc001c 00002902-0000-1000-8000-00805f9b34fb Client Characteristic Configuration Characteristic (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0017/char0018 00001532-1212-efde-1523-785feabcd123 Vendor specific Primary Service (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0013 0000180f-0000-1000-8000-00805f9b34fb Battery Service Characteristic (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0013/char0014 00002a19-0000-1000-8000-00805f9b34fb Battery Level Descriptor (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0013/char0014/desc0016 00002902-0000-1000-8000-00805f9b34fb Client Characteristic Configuration Primary Service (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service000c 0000180a-0000-1000-8000-00805f9b34fb Device Information Characteristic (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service000c/char0011 00002a50-0000-1000-8000-00805f9b34fb PnP ID Characteristic (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service000c/char000f 00002a26-0000-1000-8000-00805f9b34fb Firmware Revision String Characteristic (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service000c/char000d 00002a29-0000-1000-8000-00805f9b34fb Manufacturer Name String Primary Service (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0008 00001801-0000-1000-8000-00805f9b34fb Generic Attribute Profile Characteristic (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0008/char0009 00002a05-0000-1000-8000-00805f9b34fb Service Changed Descriptor (Handle 0x0000) /org/bluez/hci0/dev_XX_XX_XX_XX_XX_XX/service0008/char0009/desc000b 00002902-0000-1000-8000-00805f9b34fb Client Characteristic Configuration And these are some events in this flipped over mouse mode I can see/dump: > ACL data: handle 3585 flags 0x02 dlen 13 ATT: Handle notify (0x1b) handle 0x0027 value 0x00 0xfa 0x0f 0x00 0x00 0x00 > ACL data: handle 3585 flags 0x02 dlen 13 ATT: Handle notify (0x1b) handle 0x0027 value 0x00 0xfe 0x0f 0x00 0x00 0x00 > ACL data: handle 3585 flags 0x02 dlen 13 ATT: Handle notify (0x1b) handle 0x0027 value 0x00 0xff 0x0f 0x00 0x00 0x00 > ACL data: handle 3585 flags 0x02 dlen 13 ATT: Handle notify (0x1b) handle 0x0027 value 0x00 0x01 0x00 0x00 0x00 0x00 > ACL data: handle 3585 flags 0x02 dlen 13 ATT: Handle notify (0x1b) handle 0x0027 value 0x00 0x02 0x00 0x00 0x00 0x00 > ACL data: handle 3585 flags 0x02 dlen 13 ATT: Handle notify (0x1b) handle 0x0027 value 0x00 0x02 0x00 0x00 0x00 0x00 > ACL data: handle 3585 flags 0x02 dlen 13 ATT: Handle notify (0x1b) handle 0x0027 value 0x00 0xff 0x0f 0x00 0x00 0x00 > ACL data: handle 3585 flags 0x02 dlen 13 ATT: Handle notify (0x1b) handle 0x0027 value 0x00 0x00 0xf0 0xff 0x00 0x00 but the mouse pointer does not move, buttons etc. do not work. I am not sure what the problem could be or how to diagnose this further. Any hints would be greatly appreciated! Since it seems that the device works pretty much out of the box in Windows (at least judging from the manual, I do not have Windows to test) I think no special drivers etc. should be necessary. So I can just assume that this devices is special in some way which is not yet fully handled by BlueZ? Cheers nicole
