Comment 7 for bug 1791427

Hi, i did a complete new installation with the ubuntu 18.04.1 iso and the touchpad was always working after suspend/resume only the trackpoints gets lost. Does it make a difference if s3 is available during installation?

The only modification i had to do was to remove the blacklist of i2c_i801 in /etc/modprobe.d/blacklist.conf otherwise my touchpad and the trackpoint are only working
sporadically and dmesg is full of:
...
[ 28.588451] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
[ 28.589633] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
[ 28.590844] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
[ 28.600959] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
[ 28.602151] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
[ 28.602153] psmouse serio1: issuing reconnect request
[ 29.327513] psmouse serio1: synaptics: queried max coordinates: x [..5678], y [..4758]
[ 29.359677] psmouse serio1: synaptics: queried min coordinates: x [1266..], y [1094..]
[ 29.812077] psmouse serio2: Failed to reset mouse on synaptics-pt/serio0
[ 35.040078] input: PS/2 Generic Mouse as /devices/platform/i8042/serio1/serio2/input/input20
[ 35.303431] psmouse serio2: Failed to enable mouse on synaptics-pt/serio0
...

1. remaining issue: tap to click is not working -> fixed by upgrading libinput

2. remaining issue: my trackpoint sometimes does not survive suspend. After an subsequent suspend/resume, it is added again and is useable again. In dmesg i can see that the kernel is adding it:
    [ 8292.603632] PM: suspend exit
    [ 8292.696364] psmouse serio2: trackpoint: Elan TrackPoint firmware: 0x04, buttons: 3/3
    [ 8292.734688] input: TPPS/2 Elan TrackPoint as /devices/rmi4-00/rmi4-00.fn03/serio2/input/input19

The full dmesg is appended. I don't use the trackpoint so that is not a real issue for me.