Public bug reported:

===================================================================
 Info                                                              
===================================================================
           PID: 11176 (quadrapassel)
           UID: 1000 (jim)
           GID: 1000 (jim)
        Signal: 5 (TRAP)
     Timestamp: Sun 2020-12-27 17:47:33 EST (18h ago)
  Command Line: quadrapassel
    Executable: /usr/games/quadrapassel
 Control Group: /user.slice/user-1000.slice/session-c2.scope
          Unit: session-c2.scope
         Slice: user-1000.slice
       Session: c2
     Owner UID: 1000 (jim)
       Boot ID: 00779cd3939045efbbc09e0d1ebfbbba
    Machine ID: 2e6db7b3feeb408ba59f7482257bc249
      Hostname: jim-broom
       Storage: 
/var/lib/systemd/coredump/core.quadrapassel.1000.00779cd3939045efbbc09e0d1ebfbbba.11176.1609109253000000000000.lz4
       Message: Process 11176 (quadrapassel) of user 1000 dumped core.
                
                Stack trace of thread 11176:
                #0  0x00007f58d7e940d5 n/a (libglib-2.0.so.0 + 0x580d5)
                #1  0x00007f58d7e96abc g_log_writer_default (libglib-2.0.so.0 + 
0x5aabc)
                #2  0x00007f58d7e94d17 g_log_structured_array (libglib-2.0.so.0 
+ 0x58d17)
                #3  0x00007f58d7e95744 g_log_structured_standard 
(libglib-2.0.so.0 + 0x59744)
                #4  0x00007f58d713fcea n/a (libgdk-3.so.0 + 0x68cea)
                #5  0x00007f58d714cd13 n/a (libgdk-3.so.0 + 0x75d13)
                #6  0x00007f58d6f9d0db _XError (libX11.so.6 + 0x410db)
                #7  0x00007f58d5940baf n/a (libGLX_mesa.so.0 + 0x38baf)
                #8  0x00007f58d59438c0 n/a (libGLX_mesa.so.0 + 0x3b8c0)
                #9  0x00007f58d72842ac n/a (libcogl.so.20 + 0x7b2ac)
                #10 0x00007f58d8373c08 n/a (libclutter-1.0.so.0 + 0x47c08)
                #11 0x00007f58d83e4e80 n/a (libclutter-1.0.so.0 + 0xb8e80)
                #12 0x00007f58d83cde49 n/a (libclutter-1.0.so.0 + 0xa1e49)
                #13 0x00007f58d7e8dfbd g_main_context_dispatch 
(libglib-2.0.so.0 + 0x51fbd)
                #14 0x00007f58d7e8e240 n/a (libglib-2.0.so.0 + 0x52240)
                #15 0x00007f58d7e8e2e3 g_main_context_iteration 
(libglib-2.0.so.0 + 0x522e3)
                #16 0x00007f58d822dfd5 g_application_run (libgio-2.0.so.0 + 
0xe2fd5)
                #17 0x000055e7c75ea2a9 n/a (quadrapassel + 0x152a9)
                #18 0x00007f58d733b0b3 __libc_start_main (libc.so.6 + 0x270b3)
                #19 0x000055e7c75dd59e n/a (quadrapassel + 0x859e)
                
                Stack trace of thread 11179:
                #0  0x00007f58d6e06376 futex_wait_cancelable (libpthread.so.0 + 
0x10376)
                #1  0x00007f58d448662b n/a (r600_dri.so + 0x47c62b)
                #2  0x00007f58d448623b n/a (r600_dri.so + 0x47c23b)
                #3  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #4  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11184:
                #0  0x00007f58d7429aff __GI___poll (libc.so.6 + 0x115aff)
                #1  0x00007f58d7e8e1ae n/a (libglib-2.0.so.0 + 0x521ae)
                #2  0x00007f58d7e8e2e3 g_main_context_iteration 
(libglib-2.0.so.0 + 0x522e3)
                #3  0x00007f58d7e8e331 n/a (libglib-2.0.so.0 + 0x52331)
                #4  0x00007f58d7eb7931 n/a (libglib-2.0.so.0 + 0x7b931)
                #5  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #6  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11180:
                #0  0x00007f58d6e06376 futex_wait_cancelable (libpthread.so.0 + 
0x10376)
                #1  0x00007f58d448662b n/a (r600_dri.so + 0x47c62b)
                #2  0x00007f58d448623b n/a (r600_dri.so + 0x47c23b)
                #3  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #4  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11183:
                #0  0x00007f58d6e06376 futex_wait_cancelable (libpthread.so.0 + 
0x10376)
                #1  0x00007f58d448662b n/a (r600_dri.so + 0x47c62b)
                #2  0x00007f58d448623b n/a (r600_dri.so + 0x47c23b)
                #3  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #4  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11182:
                #0  0x00007f58d6e06376 futex_wait_cancelable (libpthread.so.0 + 
0x10376)
                #1  0x00007f58d448662b n/a (r600_dri.so + 0x47c62b)
                #2  0x00007f58d448623b n/a (r600_dri.so + 0x47c23b)
                #3  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #4  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11186:
                #0  0x00007f58d7429aff __GI___poll (libc.so.6 + 0x115aff)
                #1  0x00007f58d7e8e1ae n/a (libglib-2.0.so.0 + 0x521ae)
                #2  0x00007f58d7e8e2e3 g_main_context_iteration 
(libglib-2.0.so.0 + 0x522e3)
                #3  0x00007f58d3fff99d n/a (libdconfsettings.so + 0xa99d)
                #4  0x00007f58d7eb7931 n/a (libglib-2.0.so.0 + 0x7b931)
                #5  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #6  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11190:
                #0  0x00007f58d742f89d syscall (libc.so.6 + 0x11b89d)
                #1  0x00007f58d7edb5a6 g_cond_wait_until (libglib-2.0.so.0 + 
0x9f5a6)
                #2  0x00007f58d7e5e561 n/a (libglib-2.0.so.0 + 0x22561)
                #3  0x00007f58d7eb832a n/a (libglib-2.0.so.0 + 0x7c32a)
                #4  0x00007f58d7eb7931 n/a (libglib-2.0.so.0 + 0x7b931)
                #5  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #6  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11189:
                #0  0x00007f58d742f89d syscall (libc.so.6 + 0x11b89d)
                #1  0x00007f58d7edb5a6 g_cond_wait_until (libglib-2.0.so.0 + 
0x9f5a6)
                #2  0x00007f58d7e5e561 n/a (libglib-2.0.so.0 + 0x22561)
                #3  0x00007f58d7eb832a n/a (libglib-2.0.so.0 + 0x7c32a)
                #4  0x00007f58d7eb7931 n/a (libglib-2.0.so.0 + 0x7b931)
                #5  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #6  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11187:
                #0  0x00007f58d7429aff __GI___poll (libc.so.6 + 0x115aff)
                #1  0x00007f58bee8c1d6 n/a (libpulse.so.0 + 0x351d6)
                #2  0x00007f58bee7d841 pa_mainloop_poll (libpulse.so.0 + 
0x26841)
                #3  0x00007f58bee7dec3 pa_mainloop_iterate (libpulse.so.0 + 
0x26ec3)
                #4  0x00007f58bee7df70 pa_mainloop_run (libpulse.so.0 + 0x26f70)
                #5  0x00007f58bee8c11d n/a (libpulse.so.0 + 0x3511d)
                #6  0x00007f58bebdc72c n/a (libpulsecommon-13.99.so + 0x5372c)
                #7  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #8  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11185:
                #0  0x00007f58d7429aff __GI___poll (libc.so.6 + 0x115aff)
                #1  0x00007f58d7e8e1ae n/a (libglib-2.0.so.0 + 0x521ae)
                #2  0x00007f58d7e8e533 g_main_loop_run (libglib-2.0.so.0 + 
0x52533)
                #3  0x00007f58d8269eda n/a (libgio-2.0.so.0 + 0x11eeda)
                #4  0x00007f58d7eb7931 n/a (libglib-2.0.so.0 + 0x7b931)
                #5  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #6  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11181:
                #0  0x00007f58d6e06376 futex_wait_cancelable (libpthread.so.0 + 
0x10376)
                #1  0x00007f58d448662b n/a (r600_dri.so + 0x47c62b)
                #2  0x00007f58d448623b n/a (r600_dri.so + 0x47c23b)
                #3  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #4  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
                
                Stack trace of thread 11188:
                #0  0x00007f58d742f89d syscall (libc.so.6 + 0x11b89d)
                #1  0x00007f58d7edb5a6 g_cond_wait_until (libglib-2.0.so.0 + 
0x9f5a6)
                #2  0x00007f58d7e5e561 n/a (libglib-2.0.so.0 + 0x22561)
                #3  0x00007f58d7eb832a n/a (libglib-2.0.so.0 + 0x7c32a)
                #4  0x00007f58d7eb7931 n/a (libglib-2.0.so.0 + 0x7b931)
                #5  0x00007f58d6dff609 start_thread (libpthread.so.0 + 0x9609)
                #6  0x00007f58d7436293 __clone (libc.so.6 + 0x122293)
===================================================================
 GDB Log                                                           
===================================================================
[New LWP 11176]
[New LWP 11179]
[New LWP 11184]
[New LWP 11180]
[New LWP 11183]
[New LWP 11182]
[New LWP 11186]
[New LWP 11190]
[New LWP 11189]
[New LWP 11187]
[New LWP 11185]
[New LWP 11181]
[New LWP 11188]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `quadrapassel'.
Program terminated with signal SIGTRAP, Trace/breakpoint trap.
#0  0x00007f58d7e940d5 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
[Current thread is 1 (Thread 0x7f58d5fb0a80 (LWP 11176))]

===================================================================
 GDB Backtrace                                                     
===================================================================
[New LWP 11176]
[New LWP 11179]
[New LWP 11184]
[New LWP 11180]
[New LWP 11183]
[New LWP 11182]
[New LWP 11186]
[New LWP 11190]
[New LWP 11189]
[New LWP 11187]
[New LWP 11185]
[New LWP 11181]
[New LWP 11188]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `quadrapassel'.
Program terminated with signal SIGTRAP, Trace/breakpoint trap.
#0  0x00007f58d7e940d5 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
[Current thread is 1 (Thread 0x7f58d5fb0a80 (LWP 11176))]
#0  0x00007f58d7e940d5 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f58d7e96abc in g_log_writer_default () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f58d7e94d17 in g_log_structured_array () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f58d7e95744 in g_log_structured_standard () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f58d713fcea in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#5  0x00007f58d714cd13 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#6  0x00007f58d6f9d0db in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007f58d5940baf in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#8  0x00007f58d59438c0 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#9  0x00007f58d72842ac in ?? () from /usr/lib/x86_64-linux-gnu/libcogl.so.20
#10 0x00007f58d8373c08 in ?? () from 
/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#11 0x00007f58d83e4e80 in ?? () from 
/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#12 0x00007f58d83cde49 in ?? () from 
/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#13 0x00007f58d7e8dfbd in g_main_context_dispatch () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f58d7e8e240 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f58d7e8e2e3 in g_main_context_iteration () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f58d822dfd5 in g_application_run () from 
/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#17 0x000055e7c75ea2a9 in ?? ()
#18 0x00007f58d733b0b3 in __libc_start_main (main=0x55e7c75dd550, argc=1, 
argv=0x7ffed7f6da18, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7ffed7f6da08) at ../csu/libc-start.c:308
#19 0x000055e7c75dd59e in ?? ()

===================================================================
 GDB Backtrace (all threads)                                       
===================================================================
[New LWP 11176]
[New LWP 11179]
[New LWP 11184]
[New LWP 11180]
[New LWP 11183]
[New LWP 11182]
[New LWP 11186]
[New LWP 11190]
[New LWP 11189]
[New LWP 11187]
[New LWP 11185]
[New LWP 11181]
[New LWP 11188]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `quadrapassel'.
Program terminated with signal SIGTRAP, Trace/breakpoint trap.
#0  0x00007f58d7e940d5 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
[Current thread is 1 (Thread 0x7f58d5fb0a80 (LWP 11176))]

Thread 13 (Thread 0x7f58bdeaf700 (LWP 11188)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x00007f58d7edb5a6 in g_cond_wait_until () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f58d7e5e561 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f58d7eb832a in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f58d7eb7931 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019120142080, 
2054359439755473080, 140732521684766, 140732521684767, 140732521684912, 
140019120139392, -2147101209346412360, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 12 (Thread 0x7f58ce45e700 (LWP 11181)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, 
futex_word=0x55e7c96792d8) at ../sysdeps/nptl/futex-internal.h:183
        __ret = -512
        oldtype = 0
        err = <optimized out>
        oldtype = <optimized out>
        err = <optimized out>
        __ret = <optimized out>
        resultvar = <optimized out>
        __arg4 = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a4 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55e7c9679288, 
cond=0x55e7c96792b0) at pthread_cond_wait.c:508
        spin = 0
        buffer = {__routine = 0x7f58d6e06050 <__condvar_cleanup_waiting>, __arg 
= 0x7f58ce45da30, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 4, cond = 0x55e7c96792b0, mutex = 0x55e7c9679288, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 4
        seq = 2
        private = <optimized out>
        maxspin = <optimized out>
        err = <optimized out>
        result = <optimized out>
        wseq = <optimized out>
        g = <optimized out>
        seq = <optimized out>
        flags = <optimized out>
        private = <optimized out>
        signals = <optimized out>
        g1_start = <optimized out>
        spin = <optimized out>
        buffer = <optimized out>
        cbuffer = <optimized out>
        s = <optimized out>
#2  __pthread_cond_wait (cond=0x55e7c96792b0, mutex=0x55e7c9679288) at 
pthread_cond_wait.c:638
No locals.
#3  0x00007f58d448662b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
No symbol table info available.
#4  0x00007f58d448623b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019394537216, 
2054359439755473080, 140732521693854, 140732521693855, 140732521693856, 
140019394534528, -2147353299767496520, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 11 (Thread 0x7f58bffff700 (LWP 11185)):
#0  0x00007f58d7429aff in __GI___poll (fds=0x55e7c98aca60, nfds=2, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007f58d7e8e1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f58d7e8e533 in g_main_loop_run () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f58d8269eda in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007f58d7eb7931 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019155072768, 
2054359439755473080, 140732521698622, 140732521698623, 140732521698768, 
140019155070080, -2147105444184166216, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 10 (Thread 0x7f58be6b0700 (LWP 11187)):
#0  0x00007f58d7429aff in __GI___poll (fds=0x7f589c007170, nfds=3, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007f58bee8c1d6 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
No symbol table info available.
#2  0x00007f58bee7d841 in pa_mainloop_poll () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
No symbol table info available.
#3  0x00007f58bee7dec3 in pa_mainloop_iterate () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
No symbol table info available.
#4  0x00007f58bee7df70 in pa_mainloop_run () from 
/usr/lib/x86_64-linux-gnu/libpulse.so.0
No symbol table info available.
#5  0x00007f58bee8c11d in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
No symbol table info available.
#6  0x00007f58bebdc72c in ?? () from 
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.99.so
No symbol table info available.
#7  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019128534784, 
2054359439755473080, 140732521695726, 140732521695727, 140732521695728, 
140019128532096, -2147106707441422152, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#8  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 9 (Thread 0x7f58bd6ae700 (LWP 11189)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x00007f58d7edb5a6 in g_cond_wait_until () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f58d7e5e561 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f58d7eb832a in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f58d7eb7931 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019111749376, 
2054359439755473080, 140732521684766, 140732521684767, 140732521684912, 
140019111746688, -2147100111445397320, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 8 (Thread 0x7f58bcead700 (LWP 11190)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1  0x00007f58d7edb5a6 in g_cond_wait_until () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f58d7e5e561 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f58d7eb832a in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f58d7eb7931 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019103356672, 
2054359439755473080, 140732521684766, 140732521684767, 140732521684912, 
140019103353984, -2147103409443409736, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 7 (Thread 0x7f58bf7fe700 (LWP 11186)):
#0  0x00007f58d7429aff in __GI___poll (fds=0x7f58ac001360, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007f58d7e8e1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f58d7e8e2e3 in g_main_context_iteration () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f58d3fff99d in ?? () from 
/usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
No symbol table info available.
#4  0x00007f58d7eb7931 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019146680064, 
2054359439755473080, 140732521696958, 140732521696959, 140732521697104, 
140019146677376, -2147104346283151176, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 6 (Thread 0x7f58cdc5d700 (LWP 11182)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, 
futex_word=0x55e7c96792d8) at ../sysdeps/nptl/futex-internal.h:183
        __ret = -512
        oldtype = 0
        err = <optimized out>
        oldtype = <optimized out>
        err = <optimized out>
        __ret = <optimized out>
        resultvar = <optimized out>
        __arg4 = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a4 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55e7c9679288, 
cond=0x55e7c96792b0) at pthread_cond_wait.c:508
        spin = 0
        buffer = {__routine = 0x7f58d6e06050 <__condvar_cleanup_waiting>, __arg 
= 0x7f58cdc5ca30, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 6, cond = 0x55e7c96792b0, mutex = 0x55e7c9679288, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 6
        seq = 3
        private = <optimized out>
        maxspin = <optimized out>
        err = <optimized out>
        result = <optimized out>
        wseq = <optimized out>
        g = <optimized out>
        seq = <optimized out>
        flags = <optimized out>
        private = <optimized out>
        signals = <optimized out>
        g1_start = <optimized out>
        spin = <optimized out>
        buffer = <optimized out>
        cbuffer = <optimized out>
        s = <optimized out>
#2  __pthread_cond_wait (cond=0x55e7c96792b0, mutex=0x55e7c9679288) at 
pthread_cond_wait.c:638
No locals.
#3  0x00007f58d448662b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
No symbol table info available.
#4  0x00007f58d448623b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019386144512, 
2054359439755473080, 140732521693854, 140732521693855, 140732521693856, 
140019386141824, -2147347801672486728, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 5 (Thread 0x7f58cd45c700 (LWP 11183)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, 
futex_word=0x55e7c96792d8) at ../sysdeps/nptl/futex-internal.h:183
        __ret = -512
        oldtype = 0
        err = <optimized out>
        oldtype = <optimized out>
        err = <optimized out>
        __ret = <optimized out>
        resultvar = <optimized out>
        __arg4 = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a4 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55e7c9679288, 
cond=0x55e7c96792b0) at pthread_cond_wait.c:508
        spin = 0
        buffer = {__routine = 0x7f58d6e06050 <__condvar_cleanup_waiting>, __arg 
= 0x7f58cd45ba30, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 2, cond = 0x55e7c96792b0, mutex = 0x55e7c9679288, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 2
        seq = 1
        private = <optimized out>
        maxspin = <optimized out>
        err = <optimized out>
        result = <optimized out>
        wseq = <optimized out>
        g = <optimized out>
        seq = <optimized out>
        flags = <optimized out>
        private = <optimized out>
        signals = <optimized out>
        g1_start = <optimized out>
        spin = <optimized out>
        buffer = <optimized out>
        cbuffer = <optimized out>
        s = <optimized out>
#2  __pthread_cond_wait (cond=0x55e7c96792b0, mutex=0x55e7c9679288) at 
pthread_cond_wait.c:638
No locals.
#3  0x00007f58d448662b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
No symbol table info available.
#4  0x00007f58d448623b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019377751808, 
2054359439755473080, 140732521693854, 140732521693855, 140732521693856, 
140019377749120, -2147346699476504392, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 4 (Thread 0x7f58cec5f700 (LWP 11180)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, 
futex_word=0x55e7c96792d8) at ../sysdeps/nptl/futex-internal.h:183
        __ret = -512
        oldtype = 0
        err = <optimized out>
        oldtype = <optimized out>
        err = <optimized out>
        __ret = <optimized out>
        resultvar = <optimized out>
        __arg4 = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a4 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55e7c9679288, 
cond=0x55e7c96792b0) at pthread_cond_wait.c:508
        spin = 0
        buffer = {__routine = 0x7f58d6e06050 <__condvar_cleanup_waiting>, __arg 
= 0x7f58cec5ea30, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x55e7c96792b0, mutex = 0x55e7c9679288, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 0
        seq = 0
        private = <optimized out>
        maxspin = <optimized out>
        err = <optimized out>
        result = <optimized out>
        wseq = <optimized out>
        g = <optimized out>
        seq = <optimized out>
        flags = <optimized out>
        private = <optimized out>
        signals = <optimized out>
        g1_start = <optimized out>
        spin = <optimized out>
        buffer = <optimized out>
        cbuffer = <optimized out>
        s = <optimized out>
#2  __pthread_cond_wait (cond=0x55e7c96792b0, mutex=0x55e7c9679288) at 
pthread_cond_wait.c:638
No locals.
#3  0x00007f58d448662b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
No symbol table info available.
#4  0x00007f58d448623b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019402929920, 
2054359439755473080, 140732521693854, 140732521693855, 140732521693856, 
140019402927232, -2147354397668511560, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 3 (Thread 0x7f58ccb5b700 (LWP 11184)):
#0  0x00007f58d7429aff in __GI___poll (fds=0x55e7c98953a0, nfds=2, 
timeout=4000) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007f58d7e8e1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f58d7e8e2e3 in g_main_context_iteration () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f58d7e8e331 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f58d7eb7931 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019368310528, 
2054359439755473080, 140732521698190, 140732521698191, 140732521698336, 
140019368307840, -2147350134913470280, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 2 (Thread 0x7f58cf5b5700 (LWP 11179)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, 
futex_word=0x55e7c9739f8c) at ../sysdeps/nptl/futex-internal.h:183
        __ret = -512
        oldtype = 0
        err = <optimized out>
        oldtype = <optimized out>
        err = <optimized out>
        __ret = <optimized out>
        resultvar = <optimized out>
        __arg4 = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a4 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55e7c9739f38, 
cond=0x55e7c9739f60) at pthread_cond_wait.c:508
        spin = 0
        buffer = {__routine = 0x7f58d6e06050 <__condvar_cleanup_waiting>, __arg 
= 0x7f58cf5b4a30, __canceltype = -915169264, __prev = 0x0}
        cbuffer = {wseq = 843, cond = 0x55e7c9739f60, mutex = 0x55e7c9739f38, 
private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 843
        seq = 421
        private = <optimized out>
        maxspin = <optimized out>
        err = <optimized out>
        result = <optimized out>
        wseq = <optimized out>
        g = <optimized out>
        seq = <optimized out>
        flags = <optimized out>
        private = <optimized out>
        signals = <optimized out>
        g1_start = <optimized out>
        spin = <optimized out>
        buffer = <optimized out>
        cbuffer = <optimized out>
        s = <optimized out>
#2  __pthread_cond_wait (cond=0x55e7c9739f60, mutex=0x55e7c9739f38) at 
pthread_cond_wait.c:638
No locals.
#3  0x00007f58d448662b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
No symbol table info available.
#4  0x00007f58d448623b in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
No symbol table info available.
#5  0x00007f58d6dff609 in start_thread (arg=<optimized out>) at 
pthread_create.c:477
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140019412719360, 
2054359439755473080, 140732521695246, 140732521695247, 140732521695248, 
140019412716672, -2147350949883514696, -2147336617093074760}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#6  0x00007f58d7436293 in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 1 (Thread 0x7f58d5fb0a80 (LWP 11176)):
#0  0x00007f58d7e940d5 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#1  0x00007f58d7e96abc in g_log_writer_default () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f58d7e94d17 in g_log_structured_array () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f58d7e95744 in g_log_structured_standard () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f58d713fcea in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
No symbol table info available.
#5  0x00007f58d714cd13 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
No symbol table info available.
#6  0x00007f58d6f9d0db in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
No symbol table info available.
#7  0x00007f58d5940baf in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
No symbol table info available.
#8  0x00007f58d59438c0 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
No symbol table info available.
#9  0x00007f58d72842ac in ?? () from /usr/lib/x86_64-linux-gnu/libcogl.so.20
No symbol table info available.
#10 0x00007f58d8373c08 in ?? () from 
/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
No symbol table info available.
#11 0x00007f58d83e4e80 in ?? () from 
/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
No symbol table info available.
#12 0x00007f58d83cde49 in ?? () from 
/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
No symbol table info available.
#13 0x00007f58d7e8dfbd in g_main_context_dispatch () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#14 0x00007f58d7e8e240 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#15 0x00007f58d7e8e2e3 in g_main_context_iteration () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#16 0x00007f58d822dfd5 in g_application_run () from 
/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#17 0x000055e7c75ea2a9 in ?? ()
No symbol table info available.
#18 0x00007f58d733b0b3 in __libc_start_main (main=0x55e7c75dd550, argc=1, 
argv=0x7ffed7f6da18, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7ffed7f6da08) at ../csu/libc-start.c:308
        self = <optimized out>
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {94453970677600, 
2054359439755473080, 94453970621808, 140732521699856, 0, 0, 
-2053884511976394568, -2147333694462463816}, mask_was_saved = 0}}, priv = {pad 
= {0x0, 0x0, 0x1, 0x7ffed7f6da18}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 1}}}
        not_first_call = <optimized out>
#19 0x000055e7c75dd59e in ?? ()
No symbol table info available.
#0  0x00007f58d7e940d5 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f58d7e96abc in g_log_writer_default () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f58d7e94d17 in g_log_structured_array () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f58d7e95744 in g_log_structured_standard () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f58d713fcea in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#5  0x00007f58d714cd13 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#6  0x00007f58d6f9d0db in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007f58d5940baf in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#8  0x00007f58d59438c0 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#9  0x00007f58d72842ac in ?? () from /usr/lib/x86_64-linux-gnu/libcogl.so.20
#10 0x00007f58d8373c08 in ?? () from 
/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#11 0x00007f58d83e4e80 in ?? () from 
/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#12 0x00007f58d83cde49 in ?? () from 
/usr/lib/x86_64-linux-gnu/libclutter-1.0.so.0
#13 0x00007f58d7e8dfbd in g_main_context_dispatch () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007f58d7e8e240 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f58d7e8e2e3 in g_main_context_iteration () from 
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f58d822dfd5 in g_application_run () from 
/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#17 0x000055e7c75ea2a9 in ?? ()
#18 0x00007f58d733b0b3 in __libc_start_main (main=0x55e7c75dd550, argc=1, 
argv=0x7ffed7f6da18, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7ffed7f6da08) at ../csu/libc-start.c:308
#19 0x000055e7c75dd59e in ?? ()

** Affects: quadrapassel (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1909492

Title:
  quadrapassel locked up. Frozen screen.

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