I have the same issue: kcompactd0 regularity (about every 10 days)
blocks (iowait?) and never recovers. After a few more hours, the system
becomes more or less dead.

I never had this issue until, I would say, 2 month ago. I was running
Ubuntu 18.04 fine until then. No heavy load on the server.

# ps aux|grep compac
root        28  0.0  0.0      0     0 ?        D    Aug27   0:06 [kcompactd0]

btrfs-transaction seems OK though:

# ps aux|grep trans
root       471  0.0  0.0      0     0 ?        S    Aug27   7:01 
[btrfs-transacti]

>From syslog:

Sep  8 16:36:04 nc4 kernel: [1037582.945988] INFO: task kcompactd0:28 blocked 
for more than 120 seconds.
Sep  8 16:36:04 nc4 kernel: [1037582.946216]       Not tainted 
4.15.0-112-generic #113-Ubuntu
Sep  8 16:36:04 nc4 kernel: [1037582.946375] "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep  8 16:36:04 nc4 kernel: [1037582.946557] kcompactd0      D    0    28      
2 0x80000000
Sep  8 16:36:04 nc4 kernel: [1037582.946562] Call Trace:
Sep  8 16:36:04 nc4 kernel: [1037582.946642]  __schedule+0x24e/0x880
Sep  8 16:36:04 nc4 kernel: [1037582.946826]  ? btree_releasepage+0x42/0x50 
[btrfs]
Sep  8 16:36:04 nc4 kernel: [1037582.946831]  schedule+0x2c/0x80
Sep  8 16:36:04 nc4 kernel: [1037582.946833]  io_schedule+0x16/0x40
Sep  8 16:36:04 nc4 kernel: [1037582.946853]  __lock_page+0xff/0x140
Sep  8 16:36:04 nc4 kernel: [1037582.946861]  ? page_cache_tree_insert+0xe0/0xe0
Sep  8 16:36:04 nc4 kernel: [1037582.946869]  migrate_pages+0x91f/0xb80
Sep  8 16:36:04 nc4 kernel: [1037582.946875]  ? __ClearPageMovable+0x10/0x10
Sep  8 16:36:04 nc4 kernel: [1037582.946881]  ? 
isolate_freepages_block+0x3b0/0x3b0
Sep  8 16:36:04 nc4 kernel: [1037582.946884]  compact_zone+0x681/0x950
Sep  8 16:36:04 nc4 kernel: [1037582.946887]  kcompactd_do_work+0xfe/0x2a0
Sep  8 16:36:04 nc4 kernel: [1037582.946890]  ? __switch_to_asm+0x35/0x70
Sep  8 16:36:04 nc4 kernel: [1037582.946892]  ? __switch_to_asm+0x41/0x70
Sep  8 16:36:04 nc4 kernel: [1037582.946895]  kcompactd+0x86/0x1c0
Sep  8 16:36:04 nc4 kernel: [1037582.946897]  ? kcompactd+0x86/0x1c0
Sep  8 16:36:04 nc4 kernel: [1037582.946912]  ? wait_woken+0x80/0x80
Sep  8 16:36:04 nc4 kernel: [1037582.946922]  kthread+0x121/0x140
Sep  8 16:36:04 nc4 kernel: [1037582.946924]  ? kcompactd_do_work+0x2a0/0x2a0
Sep  8 16:36:04 nc4 kernel: [1037582.946926]  ? 
kthread_create_worker_on_cpu+0x70/0x70
Sep  8 16:36:04 nc4 kernel: [1037582.946929]  ret_from_fork+0x35/0x40

Some more infos (all while kcompactd is still blocked):

# uptime
 17:20:25 up 12 days, 57 min,  1 user,  load average: 1.48, 1.19, 1.08

# free -h
              total        used        free      shared  buff/cache   available
Mem:           5.8G        476M        1.6G         72M        3.8G        5.0G
Swap:          6.0G        568M        5.4G

# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.5 LTS
Release:        18.04
Codename:       bionic

The root FS is BTRF on a LUKS encrypted volume.

# cryptsetup status sda5_crypt
/dev/mapper/sda5_crypt is active and is in use.
  type:    LUKS1
  cipher:  aes-xts-plain64
  keysize: 512 bits
  key location: dm-crypt
  device:  /dev/sda5
  sector size:  512
  offset:  4096 sectors
  size:    1309712384 sectors
  mode:    read/write
  flags:   discards

# pvs
  PV                     VG     Fmt  Attr PSize    PFree
  /dev/mapper/sda5_crypt nc4-vg lvm2 a--  <624.52g    0

# vgs
  VG     #PV #LV #SN Attr   VSize    VFree
  nc4-vg   1   2   0 wz--n- <624.52g    0

# lvs
  LV     VG     Attr       LSize    Pool Origin Data%  Meta%  Move Log Cpy%Sync 
Convert
  root   nc4-vg -wi-ao---- <618.52g
  swap_1 nc4-vg -wi-ao----    6.00g

I can still write to disk:

# time dd if=/dev/zero of=io-test bs=16k count=64k conv=fdatasync
65536+0 records in
65536+0 records out
1073741824 bytes (1.1 GB, 1.0 GiB) copied, 2.79033 s, 385 MB/s

real    0m2.792s
user    0m0.071s
sys     0m1.858s

# sar
11:05:01 AM     CPU     %user     %nice   %system   %iowait    %steal     %idle
11:15:01 AM     all      1.01      0.00      0.51      0.08      0.02     98.39
11:25:01 AM     all      1.22      0.00      0.49      0.08      0.02     98.19
11:35:01 AM     all      1.01      0.00      0.46      0.06      0.02     98.45
11:45:01 AM     all      1.01      0.00      0.49      0.07      0.02     98.41
11:55:01 AM     all      0.99      0.00      0.49      0.10      0.02     98.41
12:05:01 PM     all      1.30      0.00      0.52      0.09      0.02     98.07
12:15:01 PM     all      1.01      0.00      0.52      0.05      0.02     98.41
12:25:01 PM     all      0.97      0.00      0.49      0.04      0.02     98.48
12:35:01 PM     all      1.23      0.00      0.52      0.10      0.02     98.14
12:45:01 PM     all      0.96      0.00      0.50      0.09      0.02     98.43
12:55:01 PM     all      0.99      0.00      0.46      0.10      0.02     98.43
01:05:01 PM     all      1.23      0.00      0.51      0.15      0.03     98.09
01:15:01 PM     all      0.97      0.00      0.46      0.09      0.02     98.46
01:25:01 PM     all      1.05      0.00      0.47      0.08      0.02     98.39
01:35:01 PM     all      1.08      0.00      0.45      0.08      0.02     98.37
01:45:01 PM     all      0.48      0.00      0.36      0.05      0.02     99.10
01:55:01 PM     all      0.62      0.00      0.42      0.11      0.02     98.83
02:05:01 PM     all      0.56      0.00      0.35      0.14      0.02     98.93
02:15:01 PM     all      0.95      0.00      0.47      0.13      0.02     98.43
02:25:01 PM     all      0.95      0.00      0.46      0.09      0.02     98.47
02:35:01 PM     all      1.10      0.00      0.49      0.13      0.02     98.26
02:45:01 PM     all      1.18      0.00      0.60      0.09      0.02     98.11
02:55:01 PM     all      1.23      0.00      0.59      0.09      0.03     98.06
03:05:01 PM     all      2.38      0.00      0.78      0.13      0.03     96.69
03:15:01 PM     all      1.00      0.00      0.49      0.12      0.02     98.37
03:25:01 PM     all      1.61      0.00      0.68      0.10      0.02     97.60
03:35:01 PM     all      1.33      0.00      0.56      0.07      0.03     98.01
03:45:01 PM     all      1.05      0.00      0.48      0.11      0.02     98.34
03:55:01 PM     all      1.03      0.00      0.51      0.10      0.02     98.35
04:05:01 PM     all      1.31      0.00      0.52      0.10      0.02     98.06
04:15:01 PM     all      0.97      0.00      0.50      0.10      0.02     98.40
04:25:01 PM     all      1.18      0.00      0.56      0.13      0.02     98.11
04:35:01 PM     all      1.23      0.00      0.52     10.06      0.02     88.17 
<-- trouble starts!
04:45:01 PM     all      1.42      0.00      0.89     49.33      0.02     48.33
04:55:01 PM     all      1.28      0.00      0.74     49.12      0.02     48.84
05:05:01 PM     all      1.58      0.00      2.48     50.41      0.04     45.49
05:15:01 PM     all      0.86      0.00      0.39     49.43      0.02     49.29

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1891773

Title:
  kcompactd0 and btrfs-transaction keep deadlocking with each other

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Example 1:
  [346911.187920] INFO: task kcompactd0:53 blocked for more than 120 seconds.
  [346911.187938]       Not tainted 4.15.0-112-generic #113-Ubuntu
  [346911.187951] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [346911.187968] kcompactd0      D    0    53      2 0x80000000
  [346911.187969] Call Trace:
  [346911.187973]  __schedule+0x24e/0x880
  [346911.187986]  ? btree_releasepage+0x42/0x50 [btrfs]
  [346911.187987]  schedule+0x2c/0x80
  [346911.187988]  io_schedule+0x16/0x40
  [346911.187989]  __lock_page+0xff/0x140
  [346911.187990]  ? page_cache_tree_insert+0xe0/0xe0
  [346911.187992]  migrate_pages+0x91f/0xb80
  [346911.187993]  ? __ClearPageMovable+0x10/0x10
  [346911.187994]  ? isolate_freepages_block+0x3b0/0x3b0
  [346911.187995]  compact_zone+0x681/0x950
  [346911.187995]  kcompactd_do_work+0xfe/0x2a0
  [346911.187996]  ? __switch_to_asm+0x35/0x70
  [346911.187997]  ? __switch_to_asm+0x41/0x70
  [346911.187998]  kcompactd+0x86/0x1c0
  [346911.187999]  ? kcompactd+0x86/0x1c0
  [346911.188001]  ? wait_woken+0x80/0x80
  [346911.188002]  kthread+0x121/0x140
  [346911.188003]  ? kcompactd_do_work+0x2a0/0x2a0
  [346911.188003]  ? kthread_create_worker_on_cpu+0x70/0x70
  [346911.188004]  ret_from_fork+0x35/0x40

  [346911.188015] INFO: task btrfs-transacti:858 blocked for more than 120 
seconds.
  [346911.188031]       Not tainted 4.15.0-112-generic #113-Ubuntu
  [346911.188043] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables 
this message.
  [346911.188060] btrfs-transacti D    0   858      2 0x80000000
  [346911.188061] Call Trace:
  [346911.188062]  __schedule+0x24e/0x880
  [346911.188063]  ? bit_wait+0x60/0x60
  [346911.188063]  schedule+0x2c/0x80
  [346911.188064]  io_schedule+0x16/0x40
  [346911.188065]  bit_wait_io+0x11/0x60
  [346911.188066]  __wait_on_bit+0x4c/0x90
  [346911.188066]  ? bit_wait+0x60/0x60
  [346911.188067]  out_of_line_wait_on_bit+0x90/0xb0
  [346911.188068]  ? bit_waitqueue+0x40/0x40
  [346911.188080]  lock_extent_buffer_for_io+0x100/0x2a0 [btrfs]
  [346911.188090]  btree_write_cache_pages+0x1b8/0x420 [btrfs]
  [346911.188092]  ? native_sched_clock_from_tsc+0x30/0x70
  [346911.188092]  ? update_load_avg+0x423/0x780
  [346911.188101]  btree_writepages+0x5d/0x70 [btrfs]
  [346911.188102]  do_writepages+0x4b/0xe0
  [346911.188102]  ? enqueue_task_fair+0xb6/0x300
  [346911.188111]  ? merge_state.part.47+0x44/0x130 [btrfs]
  [346911.188112]  __filemap_fdatawrite_range+0xcf/0x100
  [346911.188113]  ? __filemap_fdatawrite_range+0xcf/0x100
  [346911.188114]  filemap_fdatawrite_range+0x13/0x20
  [346911.188122]  btrfs_write_marked_extents+0x68/0x140 [btrfs]
  [346911.188129]  btrfs_write_and_wait_marked_extents.constprop.20+0x4f/0x90 
[btrfs]
  [346911.188136]  btrfs_commit_transaction+0x696/0x910 [btrfs]
  [346911.188143]  ? btrfs_commit_transaction+0x696/0x910 [btrfs]
  [346911.188144]  ? wait_woken+0x80/0x80
  [346911.188151]  transaction_kthread+0x18d/0x1b0 [btrfs]
  [346911.188152]  kthread+0x121/0x140
  [346911.188158]  ? btrfs_cleanup_transaction+0x570/0x570 [btrfs]
  [346911.188159]  ? kthread_create_worker_on_cpu+0x70/0x70
  [346911.188160]  ret_from_fork+0x35/0x40

  Example 2:
  2020-08-11T20:23:03.533+01:00 <err> kernel: INFO: task kcompactd0:53 blocked 
for more than 120 seconds.
  2020-08-11T20:23:03.533+01:00 <err> kernel:       Not tainted 
4.15.0-112-generic #113-Ubuntu
  2020-08-11T20:23:03.533+01:00 <err> kernel: "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
  2020-08-11T20:23:03.533+01:00 <info> kernel: kcompactd0      D    0    53     
 2 0x80000000
  2020-08-11T20:23:03.533+01:00 <warning> kernel: Call Trace:
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  __schedule+0x24e/0x880
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  ? 
btree_releasepage+0x42/0x50 [btrfs]
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  schedule+0x2c/0x80
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  io_schedule+0x16/0x40
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  __lock_page+0xff/0x140
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  ? 
page_cache_tree_insert+0xe0/0xe0
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  migrate_pages+0x91f/0xb80
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  ? 
__ClearPageMovable+0x10/0x10
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  ? 
isolate_freepages_block+0x3b0/0x3b0
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  compact_zone+0x681/0x950
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  kcompactd_do_work+0xfe/0x2a0
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  ? __switch_to_asm+0x35/0x70
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  ? __switch_to_asm+0x41/0x70
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  ? __switch_to_asm+0x35/0x70
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  kcompactd+0x86/0x1c0
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  ? kcompactd+0x86/0x1c0
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  ? wait_woken+0x80/0x80
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  kthread+0x121/0x140
  2020-08-11T20:23:03.533+01:00 <warning> kernel:  ? 
kcompactd_do_work+0x2a0/0x2a0
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? 
kthread_create_worker_on_cpu+0x70/0x70
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ret_from_fork+0x35/0x40
  2020-08-11T20:23:03.534+01:00 <err> kernel: INFO: task btrfs-transacti:864 
blocked for more than 120 seconds.
  2020-08-11T20:23:03.534+01:00 <err> kernel:       Not tainted 
4.15.0-112-generic #113-Ubuntu
  2020-08-11T20:23:03.534+01:00 <err> kernel: "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
  2020-08-11T20:23:03.534+01:00 <info> kernel: btrfs-transacti D    0   864     
 2 0x80000000
  2020-08-11T20:23:03.534+01:00 <warning> kernel: Call Trace:
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  __schedule+0x24e/0x880
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? bit_wait+0x60/0x60
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  schedule+0x2c/0x80
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  io_schedule+0x16/0x40
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  bit_wait_io+0x11/0x60
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  __wait_on_bit+0x4c/0x90
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? bit_wait+0x60/0x60
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
out_of_line_wait_on_bit+0x90/0xb0
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? bit_waitqueue+0x40/0x40
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
lock_extent_buffer_for_io+0x100/0x2a0 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
btree_write_cache_pages+0x1b8/0x420 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  btree_writepages+0x5d/0x70 
[btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  do_writepages+0x4b/0xe0
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? 
enqueue_task_fair+0xb6/0x300
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? 
merge_state.part.47+0x44/0x130 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
__filemap_fdatawrite_range+0xcf/0x100
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? 
__filemap_fdatawrite_range+0xcf/0x100
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
filemap_fdatawrite_range+0x13/0x20
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
btrfs_write_marked_extents+0x68/0x140 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
btrfs_write_and_wait_marked_extents.constprop.20+0x4f/0x90 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
btrfs_commit_transaction+0x696/0x910 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? 
btrfs_commit_transaction+0x696/0x910 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? 
start_transaction+0x191/0x430 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
transaction_kthread+0x18d/0x1b0 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  kthread+0x121/0x140
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? 
btrfs_cleanup_transaction+0x570/0x570 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? 
kthread_create_worker_on_cpu+0x70/0x70
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ret_from_fork+0x35/0x40
  2020-08-11T20:23:03.534+01:00 <err> kernel: INFO: task snapperd:5196 blocked 
for more than 120 seconds.
  2020-08-11T20:23:03.534+01:00 <err> kernel:       Not tainted 
4.15.0-112-generic #113-Ubuntu
  2020-08-11T20:23:03.534+01:00 <err> kernel: "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
  2020-08-11T20:23:03.534+01:00 <info> kernel: snapperd        D    0  5196     
 1 0x00000000
  2020-08-11T20:23:03.534+01:00 <warning> kernel: Call Trace:
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  __schedule+0x24e/0x880
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  schedule+0x2c/0x80
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  wait_for_commit+0x46/0x90 
[btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? wait_woken+0x80/0x80
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
btrfs_commit_transaction+0x287/0x910 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? 
start_transaction+0x191/0x430 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  btrfs_mksubvol+0x592/0x5a0 
[btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
btrfs_ioctl_snap_create_transid+0x18c/0x1a0 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
btrfs_ioctl_snap_create_v2+0x11e/0x180 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  btrfs_ioctl+0x84f/0x2490 
[btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? do_filp_open+0xaf/0x110
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? _copy_to_user+0x26/0x30
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? cp_new_stat+0x152/0x180
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  do_vfs_ioctl+0xa8/0x630
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? 
btrfs_ioctl_get_supported_features+0x30/0x30 [btrfs]
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? do_vfs_ioctl+0xa8/0x630
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  ? __fput+0x193/0x220
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  SyS_ioctl+0x79/0x90
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  do_syscall_64+0x73/0x130
  2020-08-11T20:23:03.534+01:00 <warning> kernel:  
entry_SYSCALL_64_after_hwframe+0x41/0xa6
  2020-08-11T20:23:03.534+01:00 <warning> kernel: RIP: 0033:0x7f6dec22d6d7
  2020-08-11T20:23:03.534+01:00 <warning> kernel: RSP: 002b:00007f6de6c782c8 
EFLAGS: 00000246 ORIG_RAX: 0000000000000010
  2020-08-11T20:23:03.534+01:00 <warning> kernel: RAX: ffffffffffffffda RBX: 
00007f6de6c782d0 RCX: 00007f6dec22d6d7
  2020-08-11T20:23:03.534+01:00 <warning> kernel: RDX: 00007f6de6c782d0 RSI: 
0000000050009417 RDI: 0000000000000007
  2020-08-11T20:23:03.534+01:00 <warning> kernel: RBP: 0000000000000006 R08: 
000000000000000f R09: 00007f6de6c79f83
  2020-08-11T20:23:03.534+01:00 <warning> kernel: R10: 0000000000000000 R11: 
0000000000000246 R12: 0000000000000007
  2020-08-11T20:23:03.534+01:00 <warning> kernel: R13: 00007f6de6c7a450 R14: 
0000000000000000 R15: 0000000000000001

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-generic 4.15.0.112.100
  ProcVersionSignature: Ubuntu 4.15.0-112.113-generic 4.15.18
  Uname: Linux 4.15.0-112-generic x86_64
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 
k4.15.0-112-generic.
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.9-0ubuntu7.16
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 
'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/hwC0D2', 
'/dev/snd/hwC0D0', '/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', 
'/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', 
'/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D0c', '/dev/snd/by-path', 
'/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] 
failed with exit code 1:
  Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer': 
'amixer'
  Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer': 
'amixer'
  Date: Sat Aug 15 22:39:32 2020
  InstallationDate: Installed on 2012-02-01 (3117 days ago)
  InstallationMedia: Ubuntu-Server 11.10 "Oneiric Ocelot" - Release amd64 
(20111011)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: Gigabyte Technology Co., Ltd. Q370M D3H GSM PLUS
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.15.0-112-generic 
root=/dev/mapper/lvm_loko0-root ro rootflags=subvol=@ sysrq_always_enabled 
panic=60
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-112-generic N/A
   linux-backports-modules-4.15.0-112-generic  N/A
   linux-firmware                              1.173.19
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
  SourcePackage: linux
  UpgradeStatus: Upgraded to bionic on 2020-08-07 (8 days ago)
  dmi.bios.date: 05/11/2020
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F15c C2
  dmi.board.asset.tag: Default string
  dmi.board.name: Q370M D3H GSM PLUS
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrF15cC2:bd05/11/2020:svnGigabyteTechnologyCo.,Ltd.:pnQ370MD3HGSMPLUS:pvrDefaultstring:rvnGigabyteTechnologyCo.,Ltd.:rnQ370MD3HGSMPLUS:rvrx.x:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.family: Default string
  dmi.product.name: Q370M D3H GSM PLUS
  dmi.product.version: Default string
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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