With v2 both keyboard and mouse from Lenovo Essentials set stopped to work. Fortunately I had a replacement so I still was able to check what happens. Seems that they stopped to be recognized as input devices, at least there were no messages like following in dmesg
input: Primax Lenovo Essential Wireless Keyboard and Mouse Combo as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.0/0003:17EF:60A9.0001/input/input3
hid-generic 0003:17EF:60A9.0001: input,hidraw0: USB HID v1.11 Keyboard [Primax Lenovo Essential Wireless Keyboard and Mouse Combo] on usb-0000:00:14.0-5/input0
input: Primax Lenovo Essential Wireless Keyboard and Mouse Combo as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.1/0003:17EF:60A9.0002/input/input4
hid-generic 0003:17EF:60A9.0002: input,hidraw1: USB HID v1.11 Mouse [Primax Lenovo Essential Wireless Keyboard and Mouse Combo] on usb-0000:00:14.0-5/input1
input: Primax Lenovo Essential Wireless Keyboard and Mouse Combo as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.2/0003:17EF:60A9.0003/input/input5
With v2 both keyboard and mouse from Lenovo Essentials set stopped to work. Fortunately I had a replacement so I still was able to check what happens. Seems that they stopped to be recognized as input devices, at least there were no messages like following in dmesg
input: Primax Lenovo Essential Wireless Keyboard and Mouse Combo as /devices/ pci0000: 00/0000: 00:14.0/ usb1/1- 5/1-5:1. 0/0003: 17EF:60A9. 0001/input/ input3 60A9.0001: input,hidraw0: USB HID v1.11 Keyboard [Primax Lenovo Essential Wireless Keyboard and Mouse Combo] on usb-0000: 00:14.0- 5/input0 pci0000: 00/0000: 00:14.0/ usb1/1- 5/1-5:1. 1/0003: 17EF:60A9. 0002/input/ input4 60A9.0002: input,hidraw1: USB HID v1.11 Mouse [Primax Lenovo Essential Wireless Keyboard and Mouse Combo] on usb-0000: 00:14.0- 5/input1 pci0000: 00/0000: 00:14.0/ usb1/1- 5/1-5:1. 2/0003: 17EF:60A9. 0003/input/ input5
hid-generic 0003:17EF:
input: Primax Lenovo Essential Wireless Keyboard and Mouse Combo as /devices/
hid-generic 0003:17EF:
input: Primax Lenovo Essential Wireless Keyboard and Mouse Combo as /devices/