Bug 1284126 - crash when qt5-qtbase-5.5.1-8.fc22 is installed
crash when qt5-qtbase-5.5.1-8.fc22 is installed
Product: Fedora
Classification: Fedora
Component: lxqt-session (Show other bugs)
Unspecified Unspecified
unspecified Severity unspecified
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Assigned To: Helio Chissini de Castro
Fedora Extras Quality Assurance
Depends On:
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Reported: 2015-11-20 17:51 EST by Petr Spacek
Modified: 2016-07-19 14:30 EDT (History)
3 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2016-07-19 14:30:46 EDT
Type: Bug
Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Description Petr Spacek 2015-11-20 17:51:00 EST
Description of problem:
lxqt-session crashes if the system as qt5-qtbase-5.5.1-8.fc22 is installed instead of qt5-qtbase-5.4.2-2.fc22.

Version-Release number of selected component (if applicable):

How reproducible:
100 %

Steps to Reproduce:
1. upgrade to qt5-qtbase-5.5.1-8.fc22
2. run lxqt-session

Actual results:
lis 17 16:15:16 stolni systemd-coredump[1148]: Process 1037 (lxqt-session) of user 1000 dumped core.
                                               Stack trace of thread 1037:
                                               #0  0x00000000b777dbe8 __kernel_vsyscall (linux-gate.so.1)
                                               #1  0x00000000b5ff7796 raise (libc.so.6)
                                               #2  0x00000000b5ff9027 abort (libc.so.6)
                                               #3  0x00000000b63f4437 _ZNK14QMessageLogger5fatalEPKcz (libQt5Core.so.5)
                                               #4  0x00000000b3a7d03f _ZN14QXcbConnectionC1EP19QXcbNativeInterfacebjPKc (libQt5XcbQpa.so.5)
                                               #5  0x00000000b3a8397c _ZN15QXcbIntegrationC1ERK11QStringListRiPPc (libQt5XcbQpa.so.5)
                                               #6  0x00000000b7776ffb _ZN21QXcbIntegrationPlugin6createERK7QStringRK11QStringListRiPPc (libqxcb.so)
                                               #7  0x00000000b68f71b2 _ZN27QPlatformIntegrationFactory6createERK7QStringRK11QStringListRiPPcS2_ (libQt5Gui.so.5)
                                               #8  0x00000000b690564f _ZN22QGuiApplicationPrivate25createPlatformIntegrationEv (libQt5Gui.so.5)
                                               #9  0x00000000b6906614 _ZN22QGuiApplicationPrivate21createEventDispatcherEv (libQt5Gui.so.5)
                                               #10 0x00000000b6e5c24c _ZN19QApplicationPrivate21createEventDispatcherEv (libQt5Widgets.so.5)
                                               #11 0x00000000b65fbab5 _ZN16QCoreApplication4initEv (libQt5Core.so.5)
                                               #12 0x00000000b65fbb41 _ZN16QCoreApplicationC2ER23QCoreApplicationPrivate (libQt5Core.so.5)
                                               #13 0x00000000b6908625 _ZN15QGuiApplicationC2ER22QGuiApplicationPrivate (libQt5Gui.so.5)
                                               #14 0x00000000b6e5eba0 _ZN12QApplicationC1ERiPPci (libQt5Widgets.so.5)
                                               #15 0x00000000b75c0596 _ZN4LxQt11ApplicationC1ERiPPc (liblxqt.so.0)
                                               #16 0x000000000805bbcd _ZN18SessionApplicationC2ERiPPc (lxqt-session)
                                               #17 0x0000000008050e1e main (lxqt-session)
                                               #18 0x00000000b5fe2715 __libc_start_main (libc.so.6)
                                               #19 0x0000000008050eb5 _start (lxqt-session)

Expected results:
It should work.

Additional info:
Downgrade of qt5-qtbase reliably fixes the problem. Maybe a rebuild is needed?
Comment 1 Rex Dieter 2015-11-21 09:48:42 EST
Consider trying lqxt-0.10.0 from updates-testing?

Comment 2 Rex Dieter 2015-11-21 09:56:32 EST
In my limited testing (and admittedly on f23), lxqt-0.10.0 + qt5-5.5.1 combination seems to work well (no crashes as reported here)

Followup question: do you have multiple displays, ie > 1 monitor in use here?
Comment 3 Fedora End Of Life 2016-07-19 14:30:46 EDT
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is
no longer maintained, which means that it will not receive any further
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of
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