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#1 2020-01-04 09:44:40

alf9000
Member
Registered: 2019-02-20
Posts: 9

[SOLVED] LXQT won't start - segfault in libQt5Gui.so

After updating to QT 5.14 my LXQT won't start anymore:

[2020-01-04T09:31:23+0100] [ALPM] upgraded qt5-base (5.13.2-3.0 -> 5.14.0-1.0)                                                                                                                                    
[2020-01-04T09:31:28+0100] [ALPM] upgraded qt5-script (5.13.2-1.1 -> 5.14.0-1.0)                                                                                                                                  
[2020-01-04T09:31:28+0100] [ALPM] upgraded qt5-svg (5.13.2-1.1 -> 5.14.0-1.0)                                                                                                                                     
[2020-01-04T09:31:28+0100] [ALPM] upgraded qt5-x11extras (5.13.2-1.1 -> 5.14.0-1.0)                                                                                                                               
Jan 04 09:38:00 n kernel: qterminal[1044]: segfault at b74e663c ip b6ee0f3a sp bf810148 error 7 in libQt5Gui.so.5.14.0[b6df3000+505000]
Jan 04 09:38:00 n kernel: Code: 89 4f 0c 50 67 e8 06 7c fb ff 83 c4 10 e9 59 ff ff ff e8 69 6a 41 00 66 90 66 90 66 90 66 90 90 8b 54 24 04 8b 02 85 c0 74 16 <f0> 83 68 14 01 75 0f 8b 02 85 c0 74 09 8b 10 89 44 24 04 ff 62 04
Jan 04 09:38:00 n systemd[1]: Started Process Core Dump (PID 1065/UID 0).
Jan 04 09:38:00 n kernel: perf: interrupt took too long (3162 > 3158), lowering kernel.perf_event_max_sample_rate to 63000
Jan 04 09:38:01 n systemd-coredump[1066]: Process 1044 (qterminal) of user 1000 dumped core.
                                          
                                          Stack trace of thread 1044:
                                          #0  0x00000000b6ee0f3a n/a (libQt5Gui.so.5 + 0x19bf3a)
                                          #1  0x00000000b6edf828 _ZN7QPixmapD1Ev (libQt5Gui.so.5 + 0x19a828)
                                          #2  0x00000000b28b238c n/a (libQt5XdgIconLoader.so.3 + 0xd38c)
                                          #3  0x0000000001f30f10 n/a (n/a + 0x0)
Jan 04 09:38:01 n systemd[1]: systemd-coredump@20-1065-0.service: Succeeded.

I found some posts in arch, were some packages of LXQT, at least libfm-qt requires a rebuilt with QT 5.14.
I haven't verified this on arch32 so far, but rolling back to QT 5.13 solves it for the moment.

Last edited by alf9000 (2020-01-05 11:33:29)

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#2 2020-01-05 04:49:45

levi
Moderator
From: Yorkshire, UK
Registered: 2018-06-16
Posts: 1,197

Re: [SOLVED] LXQT won't start - segfault in libQt5Gui.so

Did your upgrades touch the qterminal package from community?  Or is it running the same one as before but now it core dumps.  Unfortunately a coredump and stacktrace of a debug disabled build is about the most useless debugging into there is, but it looks to me like it jumped to an invalid address not inside a recognised library and crashed there and then.


Architecture: pentium4, Testing repos: Yes, Hardware: EeePC 901+2GB RAM+OS half on the SD card.

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#3 2020-01-05 11:33:11

alf9000
Member
Registered: 2019-02-20
Posts: 9

Re: [SOLVED] LXQT won't start - segfault in libQt5Gui.so

no, qterminal wasn't updated so far,
here is the pacman.log starting with the qt5 update.
Today I did a full system update and now the LXQT desktop works fine!

[2020-01-03T21:42:09+0100] [PACMAN] Running 'pacman -Syyu --noconfirm --noprogressbar --verbose'                                               
[2020-01-03T21:42:09+0100] [PACMAN] synchronizing package lists                                                                                
[2020-01-03T21:42:11+0100] [PACMAN] starting full system upgrade                                                                               
[2020-01-03T21:42:23+0100] [ALPM] transaction started                                                                                          
[2020-01-03T21:42:24+0100] [ALPM] upgraded archlinux32-keyring (20191103-1.0 -> 20191230-1.0)                                                  
[2020-01-03T21:42:24+0100] [ALPM-SCRIPTLET] ==> Appending keys from archlinux32.gpg...                                                         
[2020-01-03T21:42:25+0100] [ALPM-SCRIPTLET] ==> Locally signing trusted keys in keyring...                                                     
[2020-01-03T21:42:25+0100] [ALPM-SCRIPTLET]   -> Locally signing key A0B250C0FC9FC079EC04ADB7A50C0F20AEC3AF00...                               
[2020-01-03T21:42:25+0100] [ALPM-SCRIPTLET]   -> Locally signing key D92CDDC155BCC8F550B5FCEC30AB721FE7400FCD...                               
[2020-01-03T21:42:25+0100] [ALPM-SCRIPTLET]   -> Locally signing key 194E37A47A4C671807BACB37B1117BC1094EA6E9...                               
[2020-01-03T21:42:25+0100] [ALPM-SCRIPTLET]   -> Locally signing key CE0BDE71A759A87F23F0F7D8B61DBCE10901C163...                               
[2020-01-03T21:42:25+0100] [ALPM-SCRIPTLET] ==> Importing owner trust values...                                                                
[2020-01-03T21:42:25+0100] [ALPM-SCRIPTLET] ==> Disabling revoked keys in keyring...                                                           
[2020-01-03T21:42:25+0100] [ALPM-SCRIPTLET]   -> Disabling key 2FF1E976D6EB2E954A87DC14443904EC9EC51A8A...                                     
[2020-01-03T21:42:25+0100] [ALPM-SCRIPTLET]   -> Disabling key 7C98C4C3DE926168DC46FBAA3D06644243BF68D3...                                     
[2020-01-03T21:42:50+0100] [ALPM-SCRIPTLET]   -> Disabling key C3A8190912128B5A2E96C6023ED6490AEF932C8A...                                     
[2020-01-03T21:42:50+0100] [ALPM-SCRIPTLET] ==> Updating trust database...                                                                     
[2020-01-03T21:42:50+0100] [ALPM-SCRIPTLET] gpg: next trustdb check due at 2020-04-08                                                          
[2020-01-03T21:42:50+0100] [ALPM] upgraded expat (2.2.9-1.0 -> 2.2.9-3.0)                                                                      
[2020-01-03T21:42:50+0100] [ALPM] upgraded libtirpc (1.1.4-1.2 -> 1.2.5-1.0)                                                                   
[2020-01-03T21:42:50+0100] [ALPM] upgraded dhcpcd (8.1.2-1.0 -> 8.1.4-1.0)                                                                     
[2020-01-03T21:42:51+0100] [ALPM] upgraded groff (1.22.4-1.1 -> 1.22.4-3.0)                                                                    
[2020-01-03T21:42:52+0100] [ALPM] upgraded libedit (20191025_3.1-1.0 -> 20191211_3.1-1.0)                                                      
[2020-01-03T21:42:52+0100] [ALPM] upgraded libjpeg-turbo (2.0.3-1.1 -> 2.0.4-1.0)                                                              
[2020-01-03T21:42:52+0100] [ALPM] upgraded libmbim (1.20.2-1.0 -> 1.20.4-1.0)                                                                  
[2020-01-03T21:42:52+0100] [ALPM] upgraded libva (2.5.0-1.6 -> 2.6.0-1.0)                                                                      
[2020-01-03T21:42:52+0100] [ALPM] upgraded nano (4.6-1.0 -> 4.7-1.0)                                                                           
[2020-01-03T21:42:52+0100] [ALPM] warning: /etc/pacman.d/mirrorlist installed as /etc/pacman.d/mirrorlist.pacnew                               
[2020-01-03T21:42:52+0100] [ALPM] upgraded pacman-mirrorlist (20191124-2.0 -> 20200103-2.0)                                                    
[2020-01-03T21:42:52+0100] [ALPM] upgraded pacman-contrib (1.2.0-3.0 -> 1.3.0-1.0)                                                             
[2020-01-03T21:42:52+0100] [ALPM] installed md4c (0.4.2-1.0)                                                                                   
[2020-01-03T21:43:01+0100] [ALPM] upgraded qt5-base (5.13.2-3.0 -> 5.14.0-1.0)                                                                 
[2020-01-03T21:43:02+0100] [ALPM] upgraded qt5-script (5.13.2-1.1 -> 5.14.0-1.0)                                                               
[2020-01-03T21:43:02+0100] [ALPM] upgraded qt5-svg (5.13.2-1.1 -> 5.14.0-1.0)                                                                  
[2020-01-03T21:43:02+0100] [ALPM] upgraded qt5-x11extras (5.13.2-1.1 -> 5.14.0-1.0)                                                            
[2020-01-03T21:43:02+0100] [ALPM] upgraded s-nail (14.9.15-3.0 -> 14.9.16-1.0)                                                                 
[2020-01-03T21:43:03+0100] [ALPM] upgraded v4l-utils (1.16.7-1.1 -> 1.18.0-1.0)                                                                
[2020-01-03T21:43:03+0100] [ALPM] upgraded vulkan-icd-loader (1.1.129-1.0 -> 1.1.130-1.0)                                                      
[2020-01-03T21:43:04+0100] [ALPM] transaction completed                                                                                        
[2020-01-03T21:43:04+0100] [ALPM] running '30-systemd-daemon-reload.hook'...                                                                   
[2020-01-03T21:43:05+0100] [ALPM] running '30-systemd-udev-reload.hook'...                                                                     
[2020-01-03T21:43:05+0100] [ALPM] running '30-systemd-update.hook'...                                                                          
[2020-01-03T21:43:05+0100] [ALPM] running 'gtk-update-icon-cache.hook'...                                                                      
[2020-01-03T21:43:06+0100] [ALPM] running 'texinfo-install.hook'...                                                                            
[2020-01-03T21:43:06+0100] [ALPM] running 'update-desktop-database.hook'...                                                                    
[2020-01-03T21:45:34+0100] [PACMAN] Running 'pacman -S youtube-dl'                                                                             
[2020-01-03T21:45:42+0100] [ALPM] transaction started                                                                                          
[2020-01-03T21:45:42+0100] [ALPM] installed python-appdirs (1.4.3-5.1)                                                                         
[2020-01-03T21:45:42+0100] [ALPM] installed python-pyparsing (2.4.5-1.2)                                                                       
[2020-01-03T21:45:42+0100] [ALPM] installed python-six (1.13.0-2.1)                                                                            
[2020-01-03T21:45:42+0100] [ALPM] installed python-packaging (19.2-5.1)                                                                        
[2020-01-03T21:45:42+0100] [ALPM] installed python-ordered-set (3.1.1-1.1)                                                                     
[2020-01-03T21:45:42+0100] [ALPM] installed python-setuptools (1:42.0.2-1.0)                                                                   
[2020-01-03T21:45:44+0100] [ALPM] installed youtube-dl (2019.11.28-1.1)                                                                        
[2020-01-03T21:45:45+0100] [ALPM] transaction completed                                                                                        
[2020-01-03T21:45:45+0100] [ALPM] running '30-systemd-update.hook'...                                                                          
[2020-01-03T21:52:13+0100] [PACMAN] Running 'pacman -U qt5-base-5.13.2-3.0-pentium4.pkg.tar.xz'                                                
[2020-01-03T21:52:14+0100] [ALPM] transaction started                                                                                          
[2020-01-03T21:52:22+0100] [ALPM] downgraded qt5-base (5.14.0-1.0 -> 5.13.2-3.0)                                                               
[2020-01-03T21:52:23+0100] [ALPM] transaction completed                                                                                        
[2020-01-03T21:52:23+0100] [ALPM] running '30-systemd-update.hook'...                                                                          
[2020-01-03T21:52:38+0100] [PACMAN] Running 'pacman -U qt5-script-5.13.2-1.1-pentium4.pkg.tar.xz'                                              
[2020-01-03T21:52:38+0100] [ALPM] transaction started                                                                                          
[2020-01-03T21:52:39+0100] [ALPM] downgraded qt5-script (5.14.0-1.0 -> 5.13.2-1.1)                                                             
[2020-01-03T21:52:39+0100] [ALPM] transaction completed                                                                                        
[2020-01-03T21:52:39+0100] [ALPM] running '30-systemd-update.hook'...                                                                          
[2020-01-03T21:52:51+0100] [PACMAN] Running 'pacman -U qt5-svg-5.13.2-1.1-pentium4.pkg.tar.xz'                                                 
[2020-01-03T21:52:52+0100] [ALPM] transaction started                                                                                          
[2020-01-03T21:52:53+0100] [ALPM] downgraded qt5-svg (5.14.0-1.0 -> 5.13.2-1.1)                                                                
[2020-01-03T21:52:53+0100] [ALPM] transaction completed                                                                                        
[2020-01-03T21:52:53+0100] [ALPM] running '30-systemd-update.hook'...                                                                          
[2020-01-03T21:53:14+0100] [PACMAN] Running 'pacman -U qt5-x11extras-5.13.2-1.1-pentium4.pkg.tar.xz'                                           
[2020-01-03T21:53:15+0100] [ALPM] transaction started                                                                                          
[2020-01-03T21:53:16+0100] [ALPM] downgraded qt5-x11extras (5.14.0-1.0 -> 5.13.2-1.1)                                                          
[2020-01-03T21:53:16+0100] [ALPM] transaction completed                                                                                        
[2020-01-03T21:53:16+0100] [ALPM] running '30-systemd-update.hook'...                                                                          
[2020-01-04T09:30:58+0100] [PACMAN] Running 'pacman -Syyu --noconfirm --noprogressbar --verbose'                                               
[2020-01-04T09:30:58+0100] [PACMAN] synchronizing package lists                                                                                
[2020-01-04T09:31:01+0100] [PACMAN] starting full system upgrade                                                                               
[2020-01-04T09:31:08+0100] [ALPM] transaction started                                                                                          
[2020-01-04T09:31:09+0100] [ALPM] upgraded xorgproto (2019.2-1.0 -> 2019.2-2.0)                                                                
[2020-01-04T09:31:23+0100] [ALPM] upgraded qt5-base (5.13.2-3.0 -> 5.14.0-1.0)                                                                 
[2020-01-04T09:31:28+0100] [ALPM] upgraded qt5-script (5.13.2-1.1 -> 5.14.0-1.0)                                                               
[2020-01-04T09:31:28+0100] [ALPM] upgraded qt5-svg (5.13.2-1.1 -> 5.14.0-1.0)                                                                  
[2020-01-04T09:31:28+0100] [ALPM] upgraded qt5-x11extras (5.13.2-1.1 -> 5.14.0-1.0)                                                            
[2020-01-04T09:31:29+0100] [ALPM] transaction completed                                                                                        
[2020-01-04T09:31:30+0100] [ALPM] running '30-systemd-update.hook'...                                                                          
[2020-01-05T11:16:50+0100] [PACMAN] Running 'pacman -Syyu --noconfirm --noprogressbar --verbose'                                               
[2020-01-05T11:16:50+0100] [PACMAN] synchronizing package lists                                                                                
[2020-01-05T11:16:52+0100] [PACMAN] starting full system upgrade                                                                               
[2020-01-05T11:17:31+0100] [ALPM] transaction started                                                                                          
[2020-01-05T11:17:31+0100] [ALPM] upgraded archlinux32-keyring (20191230-1.0 -> 20200103-1.0)                                                  
[2020-01-05T11:17:32+0100] [ALPM-SCRIPTLET] ==> Appending keys from archlinux32.gpg...                                                         
[2020-01-05T11:17:48+0100] [ALPM-SCRIPTLET] gpg: public key DB323392796CA067 is 3037 days newer than the signature                             
[2020-01-05T11:17:55+0100] [ALPM-SCRIPTLET] ==> Locally signing trusted keys in keyring...                                                     
[2020-01-05T11:17:55+0100] [ALPM-SCRIPTLET]   -> Locally signing key A0B250C0FC9FC079EC04ADB7A50C0F20AEC3AF00...                               
[2020-01-05T11:17:55+0100] [ALPM-SCRIPTLET]   -> Locally signing key D92CDDC155BCC8F550B5FCEC30AB721FE7400FCD...                               
[2020-01-05T11:17:55+0100] [ALPM-SCRIPTLET]   -> Locally signing key 194E37A47A4C671807BACB37B1117BC1094EA6E9...                               
[2020-01-05T11:17:55+0100] [ALPM-SCRIPTLET]   -> Locally signing key C426F2CED2D759ECEA1FA78A4BA3B2E330891150...                               
[2020-01-05T11:17:55+0100] [ALPM-SCRIPTLET]   -> Locally signing key CE0BDE71A759A87F23F0F7D8B61DBCE10901C163...                               
[2020-01-05T11:18:18+0100] [ALPM-SCRIPTLET] ==> Importing owner trust values...                                                                
[2020-01-05T11:18:18+0100] [ALPM-SCRIPTLET] gpg: setting ownertrust to 4                                                                       
[2020-01-05T11:18:18+0100] [ALPM-SCRIPTLET] ==> Disabling revoked keys in keyring...                                                           
[2020-01-05T11:18:18+0100] [ALPM-SCRIPTLET]   -> Disabling key 2FF1E976D6EB2E954A87DC14443904EC9EC51A8A...                                     
[2020-01-05T11:18:40+0100] [ALPM-SCRIPTLET]   -> Disabling key 7C98C4C3DE926168DC46FBAA3D06644243BF68D3...                                     
[2020-01-05T11:18:40+0100] [ALPM-SCRIPTLET]   -> Disabling key C3A8190912128B5A2E96C6023ED6490AEF932C8A...                                     
[2020-01-05T11:18:40+0100] [ALPM-SCRIPTLET] ==> Updating trust database...                                                                     
[2020-01-05T11:18:40+0100] [ALPM-SCRIPTLET] gpg: next trustdb check due at 2020-05-05                                                          
[2020-01-05T11:18:40+0100] [ALPM] upgraded bluez (5.52-1.2 -> 5.52-2.0)                                                                        
[2020-01-05T11:18:40+0100] [ALPM] upgraded bluez-libs (5.52-1.2 -> 5.52-2.0)                                                                   
[2020-01-05T11:18:41+0100] [ALPM] upgraded bluez-utils (5.52-1.2 -> 5.52-2.0)                                                                  
[2020-01-05T11:18:41+0100] [ALPM] upgraded libevdev (1.8.0-1.1 -> 1.8.0-2.0)                                                                   
[2020-01-05T11:18:41+0100] [ALPM] upgraded libnm (1.22.0-1.0 -> 1.22.2-1.0)                                                                    
[2020-01-05T11:18:42+0100] [ALPM] upgraded libwacom (1.1-1.0 -> 1.2-1.0)                                                                       
[2020-01-05T11:18:42+0100] [ALPM] upgraded libqtxdg (3.4.0-1.1 -> 3.4.0-2.0)                                                                   
[2020-01-05T11:19:11+0100] [ALPM] upgraded linux-firmware (20191215.eefb5f7-1.0 -> 20191220.6871bff-1.0)                                       
[2020-01-05T11:19:11+0100] [ALPM] upgraded lxqt-qtplugin (0.14.0-2.3 -> 0.14.0-3.0)                                                            
[2020-01-05T11:19:12+0100] [ALPM] upgraded msmtp (1.8.6-1.0 -> 1.8.7-1.0)                                                                      
[2020-01-05T11:19:12+0100] [ALPM] upgraded msmtp-mta (1.8.6-1.0 -> 1.8.7-1.0)                                                                  
[2020-01-05T11:19:14+0100] [ALPM] upgraded networkmanager (1.22.0-1.0 -> 1.22.2-1.0)                                                           
[2020-01-05T11:19:14+0100] [ALPM] upgraded sudo (1.8.29-1.0 -> 1.8.30-1.0)                                                                     
[2020-01-05T11:19:15+0100] [ALPM] upgraded talloc (2.3.0-1.0 -> 2.3.1-1.0)                                                                     
[2020-01-05T11:19:30+0100] [ALPM] upgraded thunderbird (68.3.0-1.0 -> 68.3.1-1.0)                                                              
[2020-01-05T11:19:30+0100] [ALPM] transaction completed                                                                                        
[2020-01-05T11:19:31+0100] [ALPM] running '30-systemd-daemon-reload.hook'...                                                                   
[2020-01-05T11:19:32+0100] [ALPM] running '30-systemd-tmpfiles.hook'...                                                                        
[2020-01-05T11:19:32+0100] [ALPM] running '30-systemd-udev-reload.hook'...                                                                     
[2020-01-05T11:19:32+0100] [ALPM] running '30-systemd-update.hook'...                                                                          
[2020-01-05T11:19:32+0100] [ALPM] running 'dbus-reload.hook'...                                                                                
[2020-01-05T11:19:32+0100] [ALPM] running 'gtk-update-icon-cache.hook'...                                                                      
[2020-01-05T11:19:32+0100] [ALPM] running 'texinfo-install.hook'...                                                                            
[2020-01-05T11:19:32+0100] [ALPM] running 'update-desktop-database.hook'...                                                                    

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