Looks suspend/resume can be completed sometimes.

Apr 15 12:49:26 xps9320 kernel: [10214.971688] Freezing user space processes 
completed (elapsed 0.002 seconds)
Apr 15 21:45:23 xps9320 kernel: [30355.137512] Freezing user space processes 
completed (elapsed 0.015 seconds)
Apr 15 23:02:59 xps9320 kernel: [47737.172847] Freezing user space processes 
failed after 20.006 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:03:19 xps9320 kernel: [47757.538206] Freezing user space processes 
failed after 20.001 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:03:49 xps9320 kernel: [47787.948230] Freezing user space processes 
failed after 20.010 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:04:10 xps9320 kernel: [47808.293913] Freezing user space processes 
failed after 20.004 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:04:40 xps9320 kernel: [47838.963650] Freezing user space processes 
failed after 20.011 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:05:01 xps9320 kernel: [47859.321047] Freezing user space processes 
failed after 20.007 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:05:31 xps9320 kernel: [47889.930764] Freezing user space processes 
failed after 20.007 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:05:52 xps9320 kernel: [47910.270362] Freezing user space processes 
failed after 20.008 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:06:22 xps9320 kernel: [47940.942995] Freezing user space processes 
failed after 20.004 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:06:43 xps9320 kernel: [47961.284299] Freezing user space processes 
failed after 20.004 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:07:13 xps9320 kernel: [47991.938673] Freezing user space processes 
failed after 20.003 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:07:34 xps9320 kernel: [48012.283148] Freezing user space processes 
failed after 20.004 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:07:54 xps9320 kernel: [48032.682674] Freezing user space processes 
failed after 20.001 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:08:15 xps9320 kernel: [48053.066382] Freezing user space processes 
failed after 20.001 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:08:37 xps9320 kernel: [48075.379470] Freezing user space processes 
failed after 20.006 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:08:57 xps9320 kernel: [48095.707188] Freezing user space processes 
failed after 20.001 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:09:18 xps9320 kernel: [48116.090956] Freezing user space processes 
failed after 20.007 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:09:38 xps9320 kernel: [48136.438119] Freezing user space processes 
failed after 20.006 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:09:59 xps9320 kernel: [48157.256494] Freezing user space processes 
failed after 20.002 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:10:19 xps9320 kernel: [48177.593855] Freezing user space processes 
failed after 20.006 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:10:41 xps9320 kernel: [48199.473829] Freezing user space processes 
failed after 20.004 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:11:01 xps9320 kernel: [48219.806060] Freezing user space processes 
failed after 20.006 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:11:22 xps9320 kernel: [48240.188072] Freezing user space processes 
failed after 20.011 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 15 23:11:42 xps9320 kernel: [48260.947835] Freezing user space processes 
failed after 20.005 seconds (1 tasks refusing to freeze, wq_busy=0):
Apr 16 12:52:21 xps9320 kernel: [13407.856663] Freezing user space processes 
completed (elapsed 0.002 seconds)

Could you rebuild kernel with CONFIG_PROVE_LOCKING option to discover
locking related deadlocks? Then upload the log after reproduce the issue
by shut down laptop with the new kernel. Also please attach the output
of lsusb given it could be usb relevant.

And it also would be helpful to try with latest noble kernel or recent
upstream kernel, thanks.

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https://bugs.launchpad.net/bugs/2061091

Title:
  Freezing user space processes failed after 20.008 seconds (1 tasks
  refusing to freeze, wq_busy=0)

Status in linux-signed-hwe-6.5 package in Ubuntu:
  New

Bug description:
  Sometimes, when trying to shut down or suspend my laptop, it gets
  stuck on the console screen. If I was suspending, it eventually gives
  up and goes back to the X session. During a shutdown it hangs forever
  and the only solution seems to be to force a reboot with Magic-SysRq.

  The following appears in `kern.log`:

  ```
  Apr 12 08:59:54 xps9320 kernel: [173172.510341] Freezing user space processes 
failed after 20.008 seconds (1 tasks refusing to freeze, wq_busy=0):
  Apr 12 08:59:54 xps9320 kernel: [173172.515669] task:wireplumber     state:D 
stack:0     pid:2408  ppid:2398   flags:0x00000006
  Apr 12 08:59:54 xps9320 kernel: [173172.518923] Call Trace:
  Apr 12 08:59:54 xps9320 kernel: [173172.521755]  <TASK>
  Apr 12 08:59:54 xps9320 kernel: [173172.524099]  __schedule+0x2cb/0x750
  Apr 12 08:59:54 xps9320 kernel: [173172.526333]  schedule+0x63/0x110
  Apr 12 08:59:54 xps9320 kernel: [173172.528585]  
snd_power_ref_and_wait+0xe5/0x140 [snd]
  Apr 12 08:59:54 xps9320 kernel: [173172.530825]  ? 
__pfx_autoremove_wake_function+0x10/0x10
  Apr 12 08:59:54 xps9320 kernel: [173172.533103]  snd_ctl_elem_info+0x4f/0x1b0 
[snd]
  Apr 12 08:59:54 xps9320 kernel: [173172.535354]  
snd_ctl_elem_info_user+0x59/0xc0 [snd]
  Apr 12 08:59:54 xps9320 kernel: [173172.537598]  snd_ctl_ioctl+0x1d4/0x650 
[snd]
  Apr 12 08:59:54 xps9320 kernel: [173172.539846]  ? __fget_light+0xa5/0x120
  Apr 12 08:59:54 xps9320 kernel: [173172.542082]  __x64_sys_ioctl+0xa0/0xf0
  Apr 12 08:59:54 xps9320 kernel: [173172.544334]  do_syscall_64+0x58/0x90
  Apr 12 08:59:54 xps9320 kernel: [173172.546566]  ? 
syscall_exit_to_user_mode+0x37/0x60
  Apr 12 08:59:54 xps9320 kernel: [173172.548838]  ? do_syscall_64+0x67/0x90
  Apr 12 08:59:54 xps9320 kernel: [173172.551085]  ? do_syscall_64+0x67/0x90
  Apr 12 08:59:54 xps9320 kernel: [173172.553342]  ? 
syscall_exit_to_user_mode+0x37/0x60
  Apr 12 08:59:54 xps9320 kernel: [173172.555596]  ? do_syscall_64+0x67/0x90
  Apr 12 08:59:54 xps9320 kernel: [173172.557828]  ? common_interrupt+0x54/0xb0
  Apr 12 08:59:54 xps9320 kernel: [173172.560075]  
entry_SYSCALL_64_after_hwframe+0x6e/0xd8
  Apr 12 08:59:54 xps9320 kernel: [173172.562321] RIP: 0033:0x70f3adb1a94f
  Apr 12 08:59:54 xps9320 kernel: [173172.564650] RSP: 002b:00007ffef2072940 
EFLAGS: 00000246 ORIG_RAX: 0000000000000010
  Apr 12 08:59:54 xps9320 kernel: [173172.566925] RAX: ffffffffffffffda RBX: 
00007ffef20729b0 RCX: 000070f3adb1a94f
  Apr 12 08:59:54 xps9320 kernel: [173172.569222] RDX: 00007ffef20729b0 RSI: 
00000000c1105511 RDI: 0000000000000022
  Apr 12 08:59:54 xps9320 kernel: [173172.571501] RBP: 00007ffef2072b90 R08: 
000065107d2b6070 R09: 0000000000000004
  Apr 12 08:59:54 xps9320 kernel: [173172.573762] R10: fffffffffffff014 R11: 
0000000000000246 R12: 000065107d2ee100
  Apr 12 08:59:54 xps9320 kernel: [173172.576047] R13: 000065107d1fb400 R14: 
00007ffef2072b30 R15: 00007ffef2072ad0
  Apr 12 08:59:54 xps9320 kernel: [173172.578308]  </TASK>
  ```

  
  Another point of interest is that, when in this situation:
   * `lsusb` hangs after printing out a few lines
   * Outgoing SSH connections hang unless I clear SSH_AUTH_SOCK. gpg-agent 
appears to be trying to check for smartcards.

  So I guess there is some sort of deadlock in the USB subsystem which
  is causing all the other problems?

  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: linux-image-6.5.0-27-generic 6.5.0-27.28~22.04.1
  ProcVersionSignature: Ubuntu 6.5.0-27.28~22.04.1-generic 6.5.13
  Uname: Linux 6.5.0-27-generic x86_64
  ApportVersion: 2.20.11-0ubuntu82.5
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Apr 12 09:42:52 2024
  InstallationDate: Installed on 2022-06-28 (653 days ago)
  InstallationMedia: Xubuntu 22.04 LTS "Jammy Jellyfish" - Release amd64 
(20220419)
  SourcePackage: linux-signed-hwe-6.5
  UpgradeStatus: No upgrade log present (probably fresh install)

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