Invisible mouse and cursor when GDK_CORE_DEVICE_EVENTS set to true

[Roland65]

When GDK_CORE_DEVICE_EVENTS is set to true in /var/lib/lightdm/.pam_environment (to allow startup notification in xfce4 panel) the mouse cursor and keyboard cursor become invisible in unity-greeter.

Package version: unity-greeter 16.04.2-0ubuntu1
Ubuntu version: 16.04
100% reproducible

[Roland65 (roland65)]

I was finally able to get startup notification work in xfce4 panel and also in the Thunar file manager by applying the attached patch and without setting GDK_CORE_DEVICE_EVENTS to true in /var/lib/lightdm/.pam_environment (I simply deleted this file). With the patch, unity-greeter displays correctly the mouse cursor and works as expected.

I used the informations from Message #5 from this page: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=742460

and since I don't know the vala language, I used in the patch an external call to a C function.

I don't know if this solution is ugly or not, but it seems to work well...

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "startup-notification.patch.gz" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

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