Comment 18 for bug 390989

On 07/25/2012 07:13 PM, Marc Deslauriers wrote:
> This issue is related to the fact that the screensaver must grab the
> keyboard and mouse, but can do so if other applications already have a
> grab on them.
>
> There is no current solution to this problem with the way X is designed.
>
> See:
> https://wiki.ubuntu.com/DebuggingScreenLocking#Screen_is_shown.2C_and_then_screensaver_activates_again
>

It used to not do that...so unless X was redesigned in between Ubuntu
versions it must be something else.