Comment 14 for bug 1454950

Thanks, Franz, for investigating this issue.

The mouse module tries to ensure that at least one pointing device is present at any time. This is reasonable, as some people might have problems navigating the UI with only a keyboard if they accidentally disable all pointing devices.

However, the hardware button should still work and allow overriding that feature. Thus, I've attached a branch that only reenables the touchpad when a pointing device other than the touchpad itself was removed. I'd appreciate some testing, because I cannot reproduce this issue on my computer.

Note that the touchpad will be reenabled after plugging and unplugging an external mouse or trackball.