Comment # 8 on bug 1011053 from zhen ren

> > 
> > Enabling the "dm-event.service" explicitly works for me. Could you have a
> > try?
> 
> # systemctl enable dm-event.service
> Created symlink from
> /etc/systemd/system/sysinit.target.wants/dm-event.service to
> /usr/lib/systemd/system/dm-event.service.  
> 
> It's enabled now. I'll let you know after my next reboot how it goes
> (shouldn't take long, this machine crashes on suspend and on hibernate very
> often).

It will take effect until your next booting up, meaning you will not see the
change when you reboot in the next reboot.

Feel free to reopen if it doesn't works for you.