18.04 HWE stack causes Thinkpad button problems

[Liam Proven]

On Mon, 18 Feb 2019 at 15:53, Liam Proven <lproven at gmail.com> wrote:
>
> I installed the HWE stack on my Thinkpad X220. This might have been
> unwise; everything was working fine.
>
> Now, the middle button no longer causes scrolling, and I can't tap to
> click on the trackpad.

BTW, I traced and fixed this.

I no longer had the driver installed after the HWE update. I installed
the new version:

xserver-xorg-input-synaptics-hwe-18.04

... as the old one (xserver-xorg-input-synaptics) had problematic dependencies.

2 reboots and it worked. First reboot, I couldn't log in -- it froze.
This may be related to me experimenting with my trackpad on the login
screen... :-/

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