gdb --args mixxx --settingsPath mixxx.config-tmp/ --resourcePath mixxx.res/ GNU gdb (Ubuntu 9.2-0ubuntu1~20.04) 9.2 Copyright (C) 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: . Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from mixxx... (No debugging symbols found in mixxx) (gdb) set height 0 (gdb) run Starting program: /usr/bin/mixxx --settingsPath mixxx.config-tmp/ --resourcePath mixxx.res/ [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7fffeac58700 (LWP 2164)] [New Thread 0x7fffe9808700 (LWP 2165)] [New Thread 0x7fffe9007700 (LWP 2166)] Warning [Main]: Failed to load "mixxx" translations for locale "de_DE" from "mixxx.res/translations/" [New Thread 0x7fffdbfff700 (LWP 2167)] Critical [Main]: "Skin directory does not exist: /home/miag/Installationen/mixxx.res/skins" Critical [Main]: "Skin directory does not exist: /home/miag/Installationen/mixxx.res/skins" [New Thread 0x7fffd8dad700 (LWP 2168)] [New Thread 0x7fff53790700 (LWP 2169)] [New Thread 0x7fff52f8f700 (LWP 2170)] Warning [Main]: failed to resolve JACK name method ALSA lib pcm_dsnoop.c:641:(snd_pcm_dsnoop_open) unable to open slave ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2' ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_refer returned error: Datei oder Verzeichnis nicht gefunden ALSA lib conf.c:5220:(snd_config_expand) Evaluate error: Datei oder Verzeichnis nicht gefunden ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM hdmi ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.USB-Audio.pcm.hdmi.0:CARD=0,AES0=4,AES1=130,AES2=0,AES3=2' ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_refer returned error: Datei oder Verzeichnis nicht gefunden ALSA lib conf.c:5220:(snd_config_expand) Evaluate error: Datei oder Verzeichnis nicht gefunden ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM hdmi ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.USB-Audio.pcm.modem.0:CARD=0' ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_refer returned error: Datei oder Verzeichnis nicht gefunden ALSA lib conf.c:5220:(snd_config_expand) Evaluate error: Datei oder Verzeichnis nicht gefunden ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline:CARD=0,DEV=0 ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.USB-Audio.pcm.modem.0:CARD=0' ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_refer returned error: Datei oder Verzeichnis nicht gefunden ALSA lib conf.c:5220:(snd_config_expand) Evaluate error: Datei oder Verzeichnis nicht gefunden ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline:CARD=0,DEV=0 ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.USB-Audio.pcm.modem.0:CARD=0' ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_refer returned error: Datei oder Verzeichnis nicht gefunden ALSA lib conf.c:5220:(snd_config_expand) Evaluate error: Datei oder Verzeichnis nicht gefunden ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM phoneline ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'cards.USB-Audio.pcm.modem.0:CARD=0' ALSA lib conf.c:4732:(_snd_config_evaluate) function snd_func_refer returned error: Datei oder Verzeichnis nicht gefunden ALSA lib conf.c:5220:(snd_config_expand) Evaluate error: Datei oder Verzeichnis nicht gefunden ALSA lib pcm.c:2642:(snd_pcm_open_noupdate) Unknown PCM phoneline [New Thread 0x7fffd83fa700 (LWP 2171)] Cannot connect to server socket err = Datei oder Verzeichnis nicht gefunden Cannot connect to server request channel jack server is not running or cannot be started JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock [Thread 0x7fffd83fa700 (LWP 2171) exited] [New Thread 0x7fffd83fa700 (LWP 2172)] Cannot connect to server socket err = Datei oder Verzeichnis nicht gefunden Cannot connect to server request channel jack server is not running or cannot be started JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock [Thread 0x7fffd83fa700 (LWP 2172) exited] ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port [New Thread 0x7fff5278e700 (LWP 2173)] [Thread 0x7fff5278e700 (LWP 2173) exited] [New Thread 0x7fff5278e700 (LWP 2174)] [Thread 0x7fff5278e700 (LWP 2174) exited] ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card [New Thread 0x7fff5278e700 (LWP 2175)] [Thread 0x7fff5278e700 (LWP 2175) exited] [New Thread 0x7fff5278e700 (LWP 2176)] [Thread 0x7fff5278e700 (LWP 2176) exited] [New Thread 0x7fff5278e700 (LWP 2177)] [New Thread 0x7fff51f8d700 (LWP 2178)] [New Thread 0x7fff5178c700 (LWP 2179)] [New Thread 0x7fff50f8b700 (LWP 2180)] [New Thread 0x7fff3bfff700 (LWP 2181)] [New Thread 0x7fff3b7fe700 (LWP 2182)] [New Thread 0x7fff3affd700 (LWP 2183)] [New Thread 0x7fff3a7fc700 (LWP 2184)] [New Thread 0x7fff39ffb700 (LWP 2185)] [New Thread 0x7fff397fa700 (LWP 2186)] [New Thread 0x7fff38ff9700 (LWP 2187)] [New Thread 0x7fff17fff700 (LWP 2188)] [New Thread 0x7fff177fe700 (LWP 2189)] [New Thread 0x7fff16ffd700 (LWP 2190)] [New Thread 0x7fff167fc700 (LWP 2191)] [New Thread 0x7fff15ffb700 (LWP 2192)] [New Thread 0x7fff157fa700 (LWP 2193)] [New Thread 0x7fff14ff9700 (LWP 2194)] [New Thread 0x7ffefffff700 (LWP 2195)] Critical [Main]: "Skin directory does not exist: /home/miag/Installationen/mixxx.res/skins" Critical [Main]: "Skin directory does not exist: /home/miag/Installationen/mixxx.res/skins" Critical [Main]: "Skin directory does not exist: /home/miag/Installationen/mixxx.res/skins" Critical [Main]: "Skin directory does not exist: /home/miag/Installationen/mixxx.res/skins" Warning [Main]: Skipping skin directory "/home/miag/Installationen/mixxx.res" because "skin.xml" is missing Critical [Main]: "Skin directory does not exist: /home/miag/Installationen/mixxx.res/skins" Warning [Main]: Skipping skin directory "/home/miag/Installationen/mixxx.res" because "skin.xml" is missing Critical [Main]: "Skin directory does not exist: /home/miag/Installationen/mixxx.res/skins" Critical [Main]: "Skin directory does not exist: /home/miag/Installationen/mixxx.res/skins" Critical [Main]: "default skin cannot be loaded see mixxx trace for more information." Warning [Main]: ControlDoublePrivate::getControl returning NULL for ( "[Master]" , "skin_settings" ) Warning [Main]: ControlDoublePrivate::getControl returning NULL for ( "[Microphone]" , "show_microphone" ) Warning [Main]: ControlDoublePrivate::getControl returning NULL for ( "[VinylControl]" , "show_vinylcontrol" ) Warning [Main]: ControlDoublePrivate::getControl returning NULL for ( "[PreviewDeck]" , "show_previewdeck" ) Warning [Main]: ControlDoublePrivate::getControl returning NULL for ( "[Library]" , "show_coverart" ) Warning [Main]: ControlDoublePrivate::getControl returning NULL for ( "[Master]" , "maximize_library" ) [New Thread 0x7ffeff7fe700 (LWP 2196)] [New Thread 0x7ffefeffd700 (LWP 2197)] [New Thread 0x7ffefe7fc700 (LWP 2198)] Warning [Controller]: USB permissions problem (or device error.) Your account needs write access to USB HID controllers. Warning [Controller]: USB permissions problem (or device error.) Your account needs write access to USB HID controllers. Warning [Controller]: USB permissions problem (or device error.) Your account needs write access to USB HID controllers. Warning [Controller]: USB permissions problem (or device error.) Your account needs write access to USB HID controllers. [New Thread 0x7ffefdffb700 (LWP 2199)] [New Thread 0x7ffefd7fa700 (LWP 2200)] [New Thread 0x7ffefcff9700 (LWP 2201)] [New Thread 0x7ffedbfff700 (LWP 2202)] [New Thread 0x7ffedb7fe700 (LWP 2203)] [New Thread 0x7ffedaffd700 (LWP 2204)] [New Thread 0x7ffeda7fc700 (LWP 2205)] [New Thread 0x7ffed9ffb700 (LWP 2206)] [New Thread 0x7ffed97fa700 (LWP 2207)] [New Thread 0x7ffed8ff9700 (LWP 2208)] [New Thread 0x7ffebbfff700 (LWP 2209)] [New Thread 0x7ffebb7fe700 (LWP 2210)] [New Thread 0x7ffebaffd700 (LWP 2211)] [New Thread 0x7ffeba7fc700 (LWP 2212)] [New Thread 0x7ffeb9ffb700 (LWP 2213)] [New Thread 0x7ffeb97fa700 (LWP 2214)] [New Thread 0x7ffeb8ff9700 (LWP 2215)] [New Thread 0x7ffe9bfff700 (LWP 2216)] [New Thread 0x7ffe9b7fe700 (LWP 2217)] [New Thread 0x7ffe9affd700 (LWP 2218)] [New Thread 0x7ffe9a7fc700 (LWP 2219)] [New Thread 0x7ffe99ffb700 (LWP 2220)] [New Thread 0x7ffe997fa700 (LWP 2221)] [New Thread 0x7ffe98ff9700 (LWP 2222)] [New Thread 0x7ffe7bfff700 (LWP 2223)] [New Thread 0x7ffe7b7fe700 (LWP 2224)] [New Thread 0x7ffe7affd700 (LWP 2225)] [New Thread 0x7ffe7a7fc700 (LWP 2226)] [New Thread 0x7ffe79ffb700 (LWP 2227)] [New Thread 0x7ffe797fa700 (LWP 2228)] [New Thread 0x7ffe78ff9700 (LWP 2229)] [New Thread 0x7ffe5bfff700 (LWP 2230)] [New Thread 0x7ffe5b7fe700 (LWP 2231)] [New Thread 0x7ffe5affd700 (LWP 2232)] [New Thread 0x7ffe5a7fc700 (LWP 2233)] [New Thread 0x7ffe59ffb700 (LWP 2234)] [New Thread 0x7ffe597fa700 (LWP 2235)] [New Thread 0x7ffe58ff9700 (LWP 2236)] [New Thread 0x7ffe43fff700 (LWP 2237)] [New Thread 0x7ffe437fe700 (LWP 2238)] [New Thread 0x7ffe42ffd700 (LWP 2239)] [New Thread 0x7ffe427fc700 (LWP 2240)] [New Thread 0x7ffe41ffb700 (LWP 2241)] [New Thread 0x7ffe417fa700 (LWP 2242)] [New Thread 0x7ffe40ff9700 (LWP 2243)] [New Thread 0x7ffe407f8700 (LWP 2244)] [New Thread 0x7ffe3fff7700 (LWP 2245)] [New Thread 0x7ffe3f7f6700 (LWP 2246)] [New Thread 0x7ffe3eff5700 (LWP 2247)] [New Thread 0x7ffe3e7f4700 (LWP 2248)] [New Thread 0x7ffe3dff3700 (LWP 2249)] [New Thread 0x7ffe3d7f2700 (LWP 2251)] [New Thread 0x7ffe3cff1700 (LWP 2252)] [New Thread 0x7ffe3c7f0700 (LWP 2253)] [New Thread 0x7ffe3bfef700 (LWP 2255)] [New Thread 0x7ffe3b7ee700 (LWP 2256)] [New Thread 0x7ffe3afed700 (LWP 2257)] [New Thread 0x7ffe3a7ec700 (LWP 2258)] [Thread 0x7ffe3a7ec700 (LWP 2258) exited] [Thread 0x7fff14ff9700 (LWP 2194) exited] [Thread 0x7fff157fa700 (LWP 2193) exited] [Thread 0x7fff5278e700 (LWP 2177) exited] [Thread 0x7fff15ffb700 (LWP 2192) exited] [Thread 0x7fff167fc700 (LWP 2191) exited] [Thread 0x7fff16ffd700 (LWP 2190) exited] [Thread 0x7fff177fe700 (LWP 2189) exited] [Thread 0x7fff17fff700 (LWP 2188) exited] [Thread 0x7fff52f8f700 (LWP 2170) exited] [Thread 0x7fff53790700 (LWP 2169) exited] [Thread 0x7fff51f8d700 (LWP 2178) exited] [Thread 0x7fff5178c700 (LWP 2179) exited] [Thread 0x7fff50f8b700 (LWP 2180) exited] [Thread 0x7fff3bfff700 (LWP 2181) exited] [Thread 0x7fff3b7fe700 (LWP 2182) exited] [Thread 0x7fff3affd700 (LWP 2183) exited] [Thread 0x7fff3a7fc700 (LWP 2184) exited] [Thread 0x7fff39ffb700 (LWP 2185) exited] [Thread 0x7fff397fa700 (LWP 2186) exited] [Thread 0x7ffeff7fe700 (LWP 2196) exited] [Thread 0x7ffefeffd700 (LWP 2197) exited] [Thread 0x7ffefe7fc700 (LWP 2198) exited] [Thread 0x7ffefdffb700 (LWP 2199) exited] [Thread 0x7ffefd7fa700 (LWP 2200) exited] [Thread 0x7ffefcff9700 (LWP 2201) exited] [Thread 0x7ffedbfff700 (LWP 2202) exited] [Thread 0x7ffedb7fe700 (LWP 2203) exited] [Thread 0x7ffedaffd700 (LWP 2204) exited] [Thread 0x7ffeda7fc700 (LWP 2205) exited] [Thread 0x7ffed9ffb700 (LWP 2206) exited] [Thread 0x7ffed97fa700 (LWP 2207) exited] [Thread 0x7ffed8ff9700 (LWP 2208) exited] [Thread 0x7ffebbfff700 (LWP 2209) exited] [Thread 0x7ffebb7fe700 (LWP 2210) exited] [Thread 0x7ffebaffd700 (LWP 2211) exited] [Thread 0x7ffeba7fc700 (LWP 2212) exited] [Thread 0x7ffeb9ffb700 (LWP 2213) exited] [Thread 0x7ffeb97fa700 (LWP 2214) exited] [Thread 0x7ffeb8ff9700 (LWP 2215) exited] [Thread 0x7ffe9bfff700 (LWP 2216) exited] [Thread 0x7ffe9b7fe700 (LWP 2217) exited] [Thread 0x7ffe9affd700 (LWP 2218) exited] [Thread 0x7ffe9a7fc700 (LWP 2219) exited] [Thread 0x7ffe99ffb700 (LWP 2220) exited] [Thread 0x7ffe997fa700 (LWP 2221) exited] [Thread 0x7ffe98ff9700 (LWP 2222) exited] [Thread 0x7ffe7bfff700 (LWP 2223) exited] [Thread 0x7ffe7b7fe700 (LWP 2224) exited] [Thread 0x7ffe7affd700 (LWP 2225) exited] [Thread 0x7ffe7a7fc700 (LWP 2226) exited] [Thread 0x7ffe79ffb700 (LWP 2227) exited] [Thread 0x7ffe797fa700 (LWP 2228) exited] [Thread 0x7ffe78ff9700 (LWP 2229) exited] [Thread 0x7ffe5bfff700 (LWP 2230) exited] [Thread 0x7ffe5b7fe700 (LWP 2231) exited] [Thread 0x7ffe5affd700 (LWP 2232) exited] [Thread 0x7ffe5a7fc700 (LWP 2233) exited] [Thread 0x7ffe59ffb700 (LWP 2234) exited] [Thread 0x7ffe597fa700 (LWP 2235) exited] [Thread 0x7ffe58ff9700 (LWP 2236) exited] [Thread 0x7ffe43fff700 (LWP 2237) exited] [Thread 0x7ffe437fe700 (LWP 2238) exited] [Thread 0x7ffe42ffd700 (LWP 2239) exited] [Thread 0x7ffe427fc700 (LWP 2240) exited] [Thread 0x7ffe41ffb700 (LWP 2241) exited] [Thread 0x7ffe417fa700 (LWP 2242) exited] [Thread 0x7ffe40ff9700 (LWP 2243) exited] [Thread 0x7ffe407f8700 (LWP 2244) exited] [Thread 0x7ffe3fff7700 (LWP 2245) exited] [Thread 0x7ffe3f7f6700 (LWP 2246) exited] [Thread 0x7ffe3eff5700 (LWP 2247) exited] [Thread 0x7ffe3e7f4700 (LWP 2248) exited] [Thread 0x7ffe3dff3700 (LWP 2249) exited] [Thread 0x7ffe3d7f2700 (LWP 2251) exited] [Thread 0x7ffe3cff1700 (LWP 2252) exited] [Thread 0x7ffe3c7f0700 (LWP 2253) exited] [Thread 0x7ffe3bfef700 (LWP 2255) exited] [Thread 0x7ffe3b7ee700 (LWP 2256) exited] [Thread 0x7ffe3afed700 (LWP 2257) exited] [Thread 0x7ffefffff700 (LWP 2195) exited] Warning [LibraryScanner 1]: QSqlDatabasePrivate::removeDatabase: connection 'MIXXX-2' is still in use, all queries will cease to work. [Thread 0x7fff38ff9700 (LWP 2187) exited] Thread 1 "mixxx" received signal SIGSEGV, Segmentation fault. 0x00007ffff3ccdd3d in QSemaphore::acquire(int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 (gdb) thread apply all bt Thread 6 (Thread 0x7fffd8dad700 (LWP 2168)): #0 futex_wait_cancelable (private=, expected=0, futex_word=0x7ffff79dafb8) at ../sysdeps/nptl/futex-internal.h:183 #1 __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7ffff79daf68, cond=0x7ffff79daf90) at pthread_cond_wait.c:508 #2 __pthread_cond_wait (cond=0x7ffff79daf90, mutex=0x7ffff79daf68) at pthread_cond_wait.c:638 #3 0x00007ffff78dd5fa in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #4 0x00007ffff78dd61f in () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5 #5 0x00007ffff385d609 in start_thread (arg=) at pthread_create.c:477 #6 0x00007ffff3784293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 5 (Thread 0x7fffdbfff700 (LWP 2167)): #0 0x00007ffff3777aff in __GI___poll (fds=0x7fffd40021e0, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff2b2336e in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffff2b234a3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffff3eeb565 in QEventDispatcherGlib::processEvents(QFlags) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #4 0x00007ffff3e924db in QEventLoop::exec(QFlags) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007ffff3cca785 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #6 0x00007ffff416defa in () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5 #7 0x00007ffff3ccb9d2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #8 0x00007ffff385d609 in start_thread (arg=) at pthread_create.c:477 #9 0x00007ffff3784293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 4 (Thread 0x7fffe9007700 (LWP 2166)): #0 0x00007ffff3777aff in __GI___poll (fds=0x55555638af70, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff2b2336e in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffff2b236f3 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffff2a00f8a in () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0 #4 0x00007ffff2b4cad1 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007ffff385d609 in start_thread (arg=) at pthread_create.c:477 #6 0x00007ffff3784293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 3 (Thread 0x7fffe9808700 (LWP 2165)): #0 0x00007ffff3777aff in __GI___poll (fds=0x555556376890, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff2b2336e in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007ffff2b234a3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007ffff2b234f1 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #4 0x00007ffff2b4cad1 in () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007ffff385d609 in start_thread (arg=) at pthread_create.c:477 #6 0x00007ffff3784293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 2 (Thread 0x7fffeac58700 (LWP 2164)): #0 0x00007ffff3777aff in __GI___poll (fds=0x7fffeac57368, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007ffff3524c1a in () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #2 0x00007ffff352690a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1 #3 0x00007fffeb1d8298 in () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 #4 0x00007ffff3ccb9d2 in () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007ffff385d609 in start_thread (arg=) at pthread_create.c:477 #6 0x00007ffff3784293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 Thread 1 (Thread 0x7fffeb8f7140 (LWP 2160)): #0 0x00007ffff3ccdd3d in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #1 0x0000555555e3ba67 in () #2 0x0000555555e3bc42 in () #3 0x00005555556e13ad in () #4 0x00005555556e35ed in () #5 0x00005555556b9ada in () #6 0x00007ffff36890b3 in __libc_start_main (main=0x5555556b9840, argc=5, argv=0x7fffffffe0c8, init=, fini=, rtld_fini=, stack_end=0x7fffffffe0b8) at ../csu/libc-start.c:308 #7 0x00005555556d626e in ()