@Rober,
I think they are different.
I found there is a solution that can fix the issue.
https://wiki.archlinux.org/index.php/Touchpad_Synaptics#Xorg.log.0_shows_SynPS.2F2_Synaptics_touchpad_can_not_grab_event_device.2C_errno.3D16
I have add GrabEventDevice=0 option to xorg.conf and it works fine now. Mouse cursor now can move after session is changed.
@Rober,
I think they are different.
I found there is a solution that can fix the issue.
https:/ /wiki.archlinux .org/index. php/Touchpad_ Synaptics# Xorg.log. 0_shows_ SynPS.2F2_ Synaptics_ touchpad_ can_not_ grab_event_ device. 2C_errno. 3D16
I have add GrabEventDevice=0 option to xorg.conf and it works fine now. Mouse cursor now can move after session is changed.