On Tiger Lake laptops, sound stopped working:

$ coredumpctl debug
           PID: 2482 (wireplumber)
           UID: 1000 (hjl)
           GID: 1000 (hjl)
        Signal: 11 (SEGV)
     Timestamp: Mon 2022-01-03 11:02:05 PST (6min ago)
  Command Line: /usr/bin/wireplumber
    Executable: /usr/bin/wireplumber
 Control Group: /user.slice/user-1000.slice/user/session.slice/wireplumber.service
          Unit: user
     User Unit: wireplumber.service
         Slice: user-1000.slice
     Owner UID: 1000 (hjl)
       Boot ID: e0407dea85c848e3b53ad99450b8d6b7
    Machine ID: ac1644144ad24066a4797fafbaa87b57
      Hostname: gnu-tgl-2
       Storage: /var/lib/systemd/coredump/core.wireplumber.1000.e0407dea85c848e3b53ad99450b8d6b7.2482.1641236525000000.zst (present)
     Disk Size: 132.0K
       Message: Process 2482 (wireplumber) of user 1000 dumped core.
                
                Found module linux-vdso.so.1 with build-id: 07aaa77a79d2c1ffacd4bcc6f5006ae7ac19ed1d
                Found module libspa-support.so with build-id: b3c0f6ed22d66e9c24ff06f7b2eaa6ee04f60fd5
                Found module libpcre2-8.so.0 with build-id: dbf58040a44903b428c4e68716aa4f45058ad650
                Found module libblkid.so.1 with build-id: 96be27216d8d6d7ba3694ca503cd1b07f60fa539
                Found module libselinux.so.1 with build-id: f805394f993c704b949315b56c344d22dfad801f
                Found module libmount.so.1 with build-id: 7f7bccf74cb835b64429e61ea0ec03cd0cb95b8b
                Found module libz.so.1 with build-id: 9c7e65b6433be7646629a465425419fcd9229543
                Found module ld-linux-x86-64.so.2 with build-id: 28b1cbc4d765751c69a2bff5279dc90668dcb494
                Found module libpcre.so.1 with build-id: fcbdb4731e50f20a47b62341a6841dd616fe495d
                Found module libffi.so.6 with build-id: 19c349362deb0668fdacd44b7eb552344d7a1dfa
                Found module libgio-2.0.so.0 with build-id: 8be4eeb5ab3e02714b03629052528cdecab1ccfc
                Found module libgmodule-2.0.so.0 with build-id: 634542167d122d8d1aa3b44542dced7bc40d2eb6
                Found module libc.so.6 with build-id: 0848f49375d0ef269914c8d9332ef025a845cb19
                Found module libgcc_s.so.1 with build-id: e2f1acec8f30a9eb4dffe33e5b1429f5157836f8
                Found module libpipewire-0.3.so.0 with build-id: a3de7d27b646cc3493c48efab881db2041c7f7dd
                Found module libglib-2.0.so.0 with build-id: 3720108994016259cac8f61f174ea32513518152
                Found module libgobject-2.0.so.0 with build-id: ead2bc31b68d342e8a9a6a87148862f08dce1bd1
                Found module libwireplumber-0.4.so.0 with build-id: baf8a3ee7d990c041e0766c0cd2173407f173588
                Found module wireplumber with build-id: 11a8209202130ea11f51a8a0b710459d36fb41d0
                Stack trace of thread 2482:
                #0  0x00007ffba50545a4 pw_context_get_properties (libpipewire-0.3.so.0 + 0x345a4)
                #1  0x00007ffba5b5b690 wp_init_transition_execute_step (wireplumber + 0x3690)
                #2  0x00007ffba52dace4 wp_transition_advance (libwireplumber-0.4.so.0 + 0x45ce4)
                #3  0x00007ffba5b5b13d init_start (wireplumber + 0x313d)
                #4  0x00007ffba514f47b g_idle_dispatch (libglib-2.0.so.0 + 0x5147b)
                #5  0x00007ffba5153130 g_main_context_dispatch (libglib-2.0.so.0 + 0x55130)
                #6  0x00007ffba51a8208 g_main_context_iterate.constprop.0 (libglib-2.0.so.0 + 0xaa208)
                #7  0x00007ffba5152853 g_main_loop_run (libglib-2.0.so.0 + 0x54853)
                #8  0x00007ffba5b5aadc main (wireplumber + 0x2adc)
                #9  0x00007ffba4e29550 __libc_start_call_main (libc.so.6 + 0x2d550)
                #10 0x00007ffba4e29612 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x2d612)
                #11 0x00007ffba5b5ad15 _start (wireplumber + 0x2d15)
                
                Stack trace of thread 2487:
                #0  0x00007ffba4f0e6cd __clone3 (libc.so.6 + 0x1126cd)

GNU gdb (GDB) Fedora 11.1-5.0.fc35
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Reading symbols from /usr/bin/wireplumber...
Downloading 0.02 MB separate debug info for /usr/bin/wireplumber
Reading symbols from /export/home/hjl/.cache/debuginfod_client/11a8209202130ea11f51a8a0b710459d36fb41d0/debuginfo...
Downloading 0.03 MB separate debug info for /export/home/hjl/.cache/debuginfod_client/11a8209202130ea11f51a8a0b710459d36fb41d0/debuginfo
[New LWP 2482]                                                                 
[New LWP 2487]
Downloading -0.00 MB separate debug info for /lib64/libwireplumber-0.4.so.0
Downloading -0.00 MB separate debug info for /lib64/libgobject-2.0.so.0        
Downloading -0.00 MB separate debug info for /export/home/hjl/.cache/debuginfod_--Type <RET> for more, q to quit, c to continue without paging--
client/ead2bc31b68d342e8a9a6a87148862f08dce1bd1/debuginfo
Downloading -0.00 MB separate debug info for /lib64/libglib-2.0.so.0           
Downloading -0.00 MB separate debug info for /lib64/libpipewire-0.3.so.0       
Downloading -0.00 MB separate debug info for /export/home/hjl/.cache/debuginfod_client/a3de7d27b646cc3493c48efab881db2041c7f7dd/debuginfo
Downloading 0.02 MB separate debug info for /lib64/libgmodule-2.0.so.0         
Downloading -0.00 MB separate debug info for /lib64/libgio-2.0.so.0
Downloading -0.00 MB separate debug info for /lib64/libpcre.so.1               
Downloading 0.02 MB separate debug info for /export/home/hjl/.cache/debuginfod_client/fcbdb4731e50f20a47b62341a6841dd616fe495d/debuginfo
Downloading -0.00 MB separate debug info for /lib64/libmount.so.1
Downloading -0.00 MB separate debug info for /export/home/hjl/.cache/debuginfod_client/7f7bccf74cb835b64429e61ea0ec03cd0cb95b8b/debuginfo
Downloading -0.00 MB separate debug info for /lib64/libselinux.so.1            
Downloading 0.03 MB separate debug info for /export/home/hjl/.cache/debuginfod_client/f805394f993c704b949315b56c344d22dfad801f/debuginfo
Downloading -0.00 MB separate debug info for /lib64/libblkid.so.1              
Downloading -0.00 MB separate debug info for /lib64/libpcre2-8.so.0            
Downloading -0.00 MB separate debug info for /export/home/hjl/.cache/debuginfod_client/dbf58040a44903b428c4e68716aa4f45058ad650/debuginfo
Downloading -0.00 MB separate debug info for /usr/lib64/spa-0.2/support/libspa-support.so
[Thread debugging using libthread_db enabled]                                  
Using host libthread_db library "/lib64/libthread_db.so.1".
Missing separate debuginfos, use: dnf debuginfo-install wireplumber-0.4.5-3.fc35.x86_64
--Type <RET> for more, q to quit, c to continue without paging--
Core was generated by `/usr/bin/wireplumber'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  pw_context_get_properties (context=0x0) at ../src/pipewire/context.c:640
Downloading 0.01 MB source file /usr/src/debug/pipewire-0.3.40-1.fc35.x86_64/redhat-linux-build/../src/pipewire/context.c
640		return context->properties;
[Current thread is 1 (Thread 0x7ffba4a35800 (LWP 2482))]
(gdb) disass
Dump of assembler code for function pw_context_get_properties:
   0x00007ffba50545a0 <+0>:	endbr64 
=> 0x00007ffba50545a4 <+4>:	mov    0x10(%rdi),%rax
   0x00007ffba50545a8 <+8>:	ret    
End of assembler dump.
(gdb) p $rdi
$1 = 0
(gdb) bt
#0  pw_context_get_properties (context=0x0) at ../src/pipewire/context.c:640
#1  0x00007ffba5b5b690 in wp_init_transition_execute_step
    (transition=0x7ffba7059a90, step=16) at ../src/main.c:126
#2  0x00007ffba52dace4 in wp_transition_advance (self=0x7ffba7059a90)
    at ../lib/wp/transition.c:465
#3  0x00007ffba5b5b13d in init_start
    (transition=transition@entry=0x7ffba7059a90) at ../src/main.c:363
#4  0x00007ffba514f47b in g_idle_dispatch
    (source=0x7ffba7057af0, callback=0x7ffba5b5b130 <init_start>, user_data=0x7ffba7059a90) at ../glib/gmain.c:5897
#5  0x00007ffba5153130 in g_main_dispatch (context=0x7ffba70584b0)
    at ../glib/gmain.c:3381
#6  g_main_context_dispatch (context=0x7ffba70584b0) at ../glib/gmain.c:4099
#7  0x00007ffba51a8208 in g_main_context_iterate.constprop.0
    (context=0x7ffba70584b0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4175
#8  0x00007ffba5152853 in g_main_loop_run (loop=0x7ffba70585d0)
    at ../glib/gmain.c:4373
#9  0x00007ffba5b5aadc in main (argc=<optimized out>, argv=<optimized out>)
    at ../src/main.c:434
(gdb) f 2
#2  0x00007ffba52dace4 in wp_transition_advance (self=0x7ffba7059a90)
    at ../lib/wp/transition.c:465
Downloading 0.00 MB source file /usr/src/debug/wireplumber-0.4.5-3.fc35.x86_64/redhat-linux-build/../lib/wp/transition.c
465	  WP_TRANSITION_GET_CLASS (self)->execute_step (self, priv->step);
(gdb) f 1
#1  0x00007ffba5b5b690 in wp_init_transition_execute_step (
    transition=0x7ffba7059a90, step=16) at ../src/main.c:126
Downloading -0.00 MB source file /usr/src/debug/wireplumber-0.4.5-3.fc35.x86_64/redhat-linux-build/../src/main.c
126       const struct pw_properties *props = pw_context_get_properties (pw_ctx);
(gdb) p pw_ctx
$2 = (struct pw_context *) 0x0
(gdb)