This bug affects me too! (see more details https://bugs.launchpad.net/bugs/1295673)
And I think it associated with https://bugs.launchpad.net/ubuntu/+source/systemd-shim/+bug/1184262 Becouse:
When laptop suspending, before display turns off and laptop become fully suspended - I see Default Ubuntu lock screen and hear Ubuntu notice sound.
May be somewhere added second lock screen call. Becouse it seems like lock screen calls before suspend and after wake up...
This bug affects me too! (see more details https:/ /bugs.launchpad .net/bugs/ 1295673)
And I think it associated with https:/ /bugs.launchpad .net/ubuntu/ +source/ systemd- shim/+bug/ 1184262
Becouse:
When laptop suspending, before display turns off and laptop become fully suspended - I see Default Ubuntu lock screen and hear Ubuntu notice sound.
May be somewhere added second lock screen call. Becouse it seems like lock screen calls before suspend and after wake up...