[   12.631639] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5e0f01)
[   12.646615] psmouse serio1: elantech: Synaptics capabilities query result 0x70, 0x16, 0x0a.
[   12.661600] psmouse serio1: elantech: Elan sample query result 0b, 01, a7
[   12.676591] psmouse serio1: elantech: Trying to set up SMBus access
[   13.811173] elan_i2c 0-0015: 0-0015 supply vcc not found, using dummy regulator
[   13.811208] elan_i2c 0-0015: Linked as a consumer to regulator.0
[   13.820829] elan_i2c 0-0015: failed to get product ID: -6
[   13.870656] elan_i2c 0-0015: failed to get product ID: -71
[   13.930646] elan_i2c 0-0015: failed to get product ID: -71
[   13.971039] elan_i2c 0-0015: Dropping the link to regulator.0
[   13.971062] elan_i2c: probe of 0-0015 failed with error -71
[  804.914182] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x5e0f01)
[  804.931501] psmouse serio1: elantech: Synaptics capabilities query result 0x70, 0x16, 0x0a.
[  804.948493] psmouse serio1: elantech: Elan sample query result 0b, 01, a7