[Bug 294712] New: KDE locks the screen before getting the reply from upowerd for its suspend/hibernate request

[Tamás Németh]

https://bugs.kde.org/show_bug.cgi?id=294712

           Summary: KDE locks the screen before getting the reply from
                    upowerd for its suspend/hibernate request
           Product: kde
           Version: 4.7
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: nt1277 at gmail.com


Version:           4.7 (using KDE 4.7.2) 
OS:                Linux

KDE asks upowerd via DBUS to suspend/hibernate. This request is equivalent to
something like this:

dbus-send --system --dest=org.freedesktop.UPower --print-reply
--type=method_call /org/freedesktop/UPower org.freedesktop.UPower.Hibernate

Upowerd then asks polkitd to authenticate this action. Given that by default,
this action is allowed to active sessions, KDE thinks that it will succeed
anyway and locks the screen before getting answer from upowerd.

However, if I change the authentication settings (e.g. by copying
/var/lib/polkit-1/localauthority/10-vendor.d/org.freedesktop.upower.hibernate.pkla
to /etc/polkit-1/localauthority/50-local.d and then editing it) and instruct
the system to ask for authentication before Upower based shutdown, then
polkit-kde-auth presents me with an authentication window.

Now, the system won't hibernate until a successful authentication, but since
the screen gets locked immediately after sending the request to upowerd, I
don't see the authentication window. I may even thin that hibernation started,
and by closing the lid and putting my notebook into its case I may even cause
severe overheating, HDD damage or data corruption due to sudden power loss.

If I realize that hibernation didn't start and unlock the screen and
authenticate then hibernation succeeds, indeed, but the system will resume with
an unlocked screen :-(

This same bug applies to both hibernation and suspension.

Reproducible: Always

Steps to Reproduce:
Configure PolicyKit to request authentication for Upower based
suspension/hibernation.

Actual Results:  
KDE locks the screen before PolicyKit authentication.

Expected Results:  
KDE should only lock the screen after receiving the results from upowerd,
AFAIK.

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