Review Request 117091: Force the screen locker's greeter to show the password input field in case of immediateLock

[Wolfgang Bauer]

> On March 26, 2014, 11:07 p.m., Thomas Lübking wrote:
> > you could sighup or sigusr the greeter process and have it
> > 
> > setImmediateLock(true);
> > desktopResized();
> > 
> > in return
> 
> Wolfgang Bauer wrote:
>     I agree, this would be a bit nicer...
>     But I tried it and cannot get it to work.
>     
>     My signal handler is called, and both setImmediateLock(true) and desktopResized() are called, (I verified this with debug output statements) but the password dialog still doesn't show.
>
> 
> Wolfgang Bauer wrote:
>     Oops, sorry. I just noticed that the signal handler is apparently only called when I run kscreenlocker_greet manually (and do "kill -USR1"), but not when the locker runs it.
>     Will have to investigate this.
> 
> Wolfgang Bauer wrote:
>     Forget my previous comment.
>     The signal handler was actually called all the time.
>     But "setImmediateLock(true);" followed by "desktopResized();" DOES NOT have any (visual) effect.
>     I have yet to find out what else to call to make that dialog appear. Any idea maybe?
>     
>     Calling exit(1) does work, but that's not much different to killing the greeter I suppose... ;-)
>
> 
> Thomas Lübking wrote:
>     Ahhh... me was too smart in the multiscreen code ;-)
>     the "for" loop in desktopResized() (which is relevant for the m_immediateLock handling) won't be entered since no screen changed.
>     
>     Instead you'd run
>     
>     for (int i = 0; i < desktop()->screenCount(); ++i) {
>        QDeclarativeProperty(m_views.at(i)->rootObject(), "locked").write(true);
>     }
>     
>     aside fixing the m_immediateLock value.
>     
>     Sorry for the false information.

Ok, that works.
Thank you for the help! :-)

Btw, I noticed that UnlockApp::setLockedPropertyOnViews() basically does the same, so I'm just calling that instead to avoid code duplication.
I have uploaded a new patch.


- Wolfgang


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On April 3, 2014, 5:15 p.m., Wolfgang Bauer wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/117091/
> -----------------------------------------------------------
> 
> (Updated April 3, 2014, 5:15 p.m.)
> 
> 
> Review request for kde-workspace and Aaron J. Seigo.
> 
> 
> Bugs: 327947 and 329076
>     http://bugs.kde.org/show_bug.cgi?id=327947
>     http://bugs.kde.org/show_bug.cgi?id=329076
> 
> 
> Repository: kde-workspace
> 
> 
> Description
> -------
> 
> If the screen locker is set to not require a password to unlock, it will not show the password input field even when the powermanagement settings suspend the system and are set to require a password after resume (when it was already running at that point).
> This locks people out of their system.
> 
> This patch adds a signal handler for SIGUSR1 that switches the running greeter to immediateLock mode. The locker sends that signal to make sure the greeter shows the password input field when necessary.
> 
> 
> Diffs
> -----
> 
>   ksmserver/screenlocker/greeter/greeterapp.h 8b79188 
>   ksmserver/screenlocker/greeter/greeterapp.cpp c5e2f85 
>   ksmserver/screenlocker/greeter/main.cpp d898734 
>   ksmserver/screenlocker/ksldapp.cpp 3dfcc9e 
> 
> Diff: https://git.reviewboard.kde.org/r/117091/diff/
> 
> 
> Testing
> -------
> 
> Disable "Require password after" in the screen locker settings (the default), set it to start after 1 min. (for easier testing).
> Enable "Suspend session after" and set it to 2 minutes. (set the action to "Suspend", "Hibernate", or "Lock Screen", doesn't matter)
> Make sure "Lock screen on resume" is enabled in the powermanagements "Advanced Options" (it is by default).
> 
> After 1 minute the screen locker kicks in, and doesn't require a password.
> After 2 minutes the session gets suspended, hibernated or locked, and requires a password to resume.
> 
> Without this patch no password dialog is shown, the user cannot resume the session by entering the password.
> 
> With this patch this works: there is a password input field, the session is unlocked when the user enters the password.
> 
> 
> Thanks,
> 
> Wolfgang Bauer
> 
>

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