Bug#895152: cinnamon-screensaver: cinnamon-screesaver-command only locks the screen the first time it is called

[Margarita Manterola <marga@debian.org>]

control: retitle -1 cinnamon-screensaver-command hungs if locking 
already locked screen

Hi,

I have been able to reproduce this issue.  I believe it's very similar 
to the other one you reported.

In my test, I waited long enough with the screen locked, that just one 
second call to cinnamon-screensaver-command failed:

marga@penelope:~$ date; cinnamon-screensaver-command -l; date; 
cinnamon-screensaver-command -l; date
dom abr  8 18:04:50 CEST 2018
dom abr  8 18:04:51 CEST 2018
Traceback (most recent call last):
  File 
"/usr/share/cinnamon-screensaver/cinnamon-screensaver-command.py", line 
73, in on_client_ready
    self.perform_action()
  File 
"/usr/share/cinnamon-screensaver/cinnamon-screensaver-command.py", line 
90, in perform_action
    self.client.proxy.call_lock_sync(self.message)
GLib.Error: g-io-error-quark: Se alcanzó el tiempo de expiración (24)

<... and it hungs there forever ...>

So, what I see happening here is that cinnamon-screensaver-command is 
trying to lock a screen that is already locked. It times out and then 
hungs, like when it can't lock because of a popup.  It's likely that 
this bug is the same as 895150. In other words, 
cinnamon-screensaver-command misbehaves when it fails to lock the 
screen, regardless of why it fails.

--
Regards,
Marga