（该问题似乎是在最近的 17.10 更新后出现的。触摸板之前在 17.10 上一直正常工作。）
东芝 L645D 上的触摸板没有反应，但 USB 鼠标正常。触摸板在 Windows 10 下正常。
$ synclient
Couldn't find synaptics properties. No synaptics driver loaded?
$ xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ xwayland-pointer:13 id=6 [slave pointer (2)]
⎜ ↳ xwayland-relative-pointer:13 id=7 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
↳ xwayland-keyboard:13 id=8 [slave keyboard (3)]
$ grep synap /var/log/syslog
Feb 19 07:14:37 martin-toshiba kernel: [ 3.981941] psmouse serio4: synaptics: queried max coordinates: x [..5686], y [..4786]
Feb 19 07:14:37 martin-toshiba kernel: [ 4.041672] psmouse serio4: synaptics: Touchpad model: 1, fw: 7.2, id: 0x1c0b1, caps: 0xd04771/0xa40000/0xa0000/0x0, board id: 0, fw id: 590211
Feb 19 07:14:37 martin-toshiba kernel: [ 4.041680] psmouse serio4: synaptics: Toshiba Satellite L645D detected, limiting rate to 40pps.
Feb 19 08:54:02 martin-toshiba kernel: [ 3.970528] psmouse serio4: synaptics: queried max coordinates: x [..5686], y [..4786]
Feb 19 08:54:02 martin-toshiba kernel: [ 4.030559] psmouse serio4: synaptics: Touchpad model: 1, fw: 7.2, id: 0x1c0b1, caps: 0xd04771/0xa40000/0xa0000/0x0, board id: 0, fw id: 590211
Feb 19 08:54:02 martin-toshiba kernel: [ 4.030566] psmouse serio4: synaptics: Toshiba Satellite L645D detected, limiting rate to 40pps.
Feb 19 08:55:41 martin-toshiba fwupd[2548]: disabling plugin because: failed to coldplug synapticsmst: MST firmware updating not supported by OEM
有什么建议吗？TIA！