Should see something like this in dmesg when the touchpad is working:
[ 8.628260] input: Wacom HID 50FC Pen as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-20/i2c-WCOM50FC:00/0018:056A:50FC.0005/input/input14 [ 8.628328] input: Wacom HID 50FC Finger as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-20/i2c-WCOM50FC:00/0018:056A:50FC.0005/input/input15 [ 8.628388] wacom 0018:056A:50FC.0005: hidraw3: I2C HID v1.00 Mouse [WCOM50FC:00 056A:50FC] on i2c-WCOM50FC:00 [ 8.648330] hid-multitouch 0018:04F3:3052.0006: Ignoring the extra HID_DG_INPUTMODE [ 8.648365] input: ELAN0651:00 04F3:3052 Touchpad as /devices/pci0000:00/0000:00:15.2/i2c_designware.2/i2c-21/i2c-ELAN0651:00/0018:04F3:3052.0006/input/input19 [ 8.648460] hid-multitouch 0018:04F3:3052.0006: input,hidraw4: I2C HID v1.00 Mouse [ELAN0651:00 04F3:3052] on i2c-ELAN0651:00
Should see something like this in dmesg when the touchpad is working:
[ 8.628260] input: Wacom HID 50FC Pen as /devices/ pci0000: 00/0000: 00:15.1/ i2c_designware. 1/i2c-20/ i2c-WCOM50FC: 00/0018: 056A:50FC. 0005/input/ input14 pci0000: 00/0000: 00:15.1/ i2c_designware. 1/i2c-20/ i2c-WCOM50FC: 00/0018: 056A:50FC. 0005/input/ input15 50FC.0005: hidraw3: I2C HID v1.00 Mouse [WCOM50FC:00 056A:50FC] on i2c-WCOM50FC:00 3052.0006: Ignoring the extra HID_DG_INPUTMODE pci0000: 00/0000: 00:15.2/ i2c_designware. 2/i2c-21/ i2c-ELAN0651: 00/0018: 04F3:3052. 0006/input/ input19 3052.0006: input,hidraw4: I2C HID v1.00 Mouse [ELAN0651:00 04F3:3052] on i2c-ELAN0651:00
[ 8.628328] input: Wacom HID 50FC Finger as /devices/
[ 8.628388] wacom 0018:056A:
[ 8.648330] hid-multitouch 0018:04F3:
[ 8.648365] input: ELAN0651:00 04F3:3052 Touchpad as /devices/
[ 8.648460] hid-multitouch 0018:04F3: