https://bugs.kde.org/show_bug.cgi?id=419360
Bug ID: 419360
Summary: dolphin show exit confirmation dialog on session
logout with qt >= 5.14.0
Product: dolphin
Version: 19.12.3
Platform: Gentoo Packages
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: dolphin-bugs-n...@kde.org
Reporter: idarktemp...@mail.ru
CC: kfm-de...@kde.org
Target Milestone: ---
Created attachment 127076
--> https://bugs.kde.org/attachment.cgi?id=127076&action=edit
some information from gdb
After upgrade from Qt-5.13.2 to Qt-5.14.1 on KDE session shutdown dolphin
started asking to confirm if I want to quit while multiple tabs are open. It
didn't ask for such confirmation with Qt-5.13.2 on session logout. And current
session is saved successfully with no regards which button was pressed in this
dialog or if any button was pressed at all.
STEPS TO REPRODUCE
1. Open at least 2 tabs in dolphin
2. Ensure that confirmation to close dolphin window with multiple open tabs is
enabled
3. Ensure that qt-5.14.1 or newer is used
4. Ensure that previous session restoring is selected in session management
configuration of KDE
4. Logout from KDE session
OBSERVED RESULT
Dolphin asks to confirm closing window on session logout. If you wait too long,
it'll just eventually crash, but on next start session would be restored.
EXPECTED RESULT
Dolphin should silently save current session and restore it next time
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Gentoo Linux with kernel 4.14.166
(available in About System)
KDE Plasma Version: 5.17.5
KDE Frameworks Version: 5.67.0
Qt Version: 5.14.1
Dolphin Version: 19.12.3
ADDITIONAL INFORMATION
While bug appears in dolphin 19.12.3 for me, I guess it'd appear in other
versions too when Qt >= 5.14.0 is used.
I suspect that it's related to following Qt change but I didn't confirm it:
https://code.qt.io/cgit/qt/qtbase.git/commit/?id=1b6db184947
Attached file contains a bit of information I could obtain using gdb. It looks
like dolphin receives two close events on session logout. In first one
'QGuiApplication::isSavingSession()' returns true and dolphin silently saves
information about current session. In second one
'QGuiApplication::isSavingSession()' returns false and it triggers displaying
confirmation dialog.
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