#788827 xserver-xorg-input-synaptics 1.8.2-1 breaks touchpad on Dell XPS 13 (2015)

Package:
xserver-xorg-input-synaptics
Source:
xserver-xorg-input-synaptics
Description:
Synaptics TouchPad driver for X.Org server
Submitter:
Nicolas Noirbent
Date:
2015-06-15 12:57:10 UTC
Severity:
important
#788827#5
Date:
2015-06-15 12:30:02 UTC
From:
To:
Dear Maintainer,

After installing version 1.8.2-1 of the package, the integrated
touchpad completely stopped working: the cursor won't move, clicking
does not work, neither does two-finger scrolling, etc.

The upgrade to xserver-xorg-core 1.17 does not seem to be the culprit
here, since 1.8.1-1 works just fine. As you can see in the Xorg
startup log below (lines 317-319) the following suspicious lines appears:

[     4.382] (--) synaptics: DLL0665:01 06CB:76AD UNKNOWN: touchpad found
[     4.382] (II) config/udev: Adding input device DLL0665:01 06CB:76AD UNKNOWN (/dev/input/mouse1)
[     4.382] (**) DLL0665:01 06CB:76AD UNKNOWN: Ignoring device from InputClass "touchpad ignore duplicates"

However I can also find them in a previous log running version
1.8.1-1, so I don't think this will help much.

Downgrading to 1.8.1-1 fixes the problem.

Regards,
#788827#10
Date:
2015-06-15 12:55:22 UTC
From:
To:
…And obvioulsy as soon as I reboot everything starts working again. I'm not
able to reproduce the bug anymore, feel free to close this bug report.

Sorry for the noise,