Ubuntu 18.04 перезапускается каждый раз, когда простаивает слишком долго, возможно, вылетает

Я столкнулся с этой проблемой с 1 месяца, и я подумал, что это какая-то ошибка. Но это начало появляться снова.

Журналы из dmseg:

[  188.894288] aufs au_opts_verify:1609:dockerd[2612]: dirperm1 breaks the protection by the permission bits on the lower branch
[  190.981028] systemd-journald[359]: File /var/log/journal/29e10902478d4243ba0e6fa5863ac289/user-1000.journal corrupted or uncleanly shut down, renaming and replacing.
[  205.206572] Bluetooth: RFCOMM TTY layer initialized
[  205.206578] Bluetooth: RFCOMM socket layer initialized
[  205.206584] Bluetooth: RFCOMM ver 1.11
[  211.331190] rfkill: input handler disabled
[  212.924709] pcieport 0000:00:1c.4: AER: Corrected error received: 0000:00:1c.4
[  212.924726] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, (Transmitter ID)
[  212.924734] pcieport 0000:00:1c.4:   device [8086:9d14] error status/mask=00001000/00002000
[  212.924740] pcieport 0000:00:1c.4:    [12] Timeout               
[  745.649772] pcieport 0000:00:1c.4: AER: Multiple Corrected error received: 0000:00:1c.4
[  745.649833] pcieport 0000:00:1c.4: PCIe Bus Error: severity=Corrected, type=Data Link Layer, (Transmitter ID)
[  745.649841] pcieport 0000:00:1c.4:   device [8086:9d14] error status/mask=00001000/00002000
[  745.649846] pcieport 0000:00:1c.4:    [12] Timeout               
[  852.614344] rfkill: input handler enabled
[  856.993369] rfkill: input handler disabled
[ 1615.828215] audit: type=1400 audit(1568653194.068:99): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/proc/5176/mountinfo" pid=5176 comm="gmain" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 1615.828447] audit: type=1400 audit(1568653194.068:100): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/etc/fstab" pid=5176 comm="gnome-logs" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
[ 1615.828484] audit: type=1400 audit(1568653194.068:101): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/proc/5176/mountinfo" pid=5176 comm="gnome-logs" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 1615.828513] audit: type=1400 audit(1568653194.068:102): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/proc/5176/mounts" pid=5176 comm="gnome-logs" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 1616.340450] audit: type=1400 audit(1568653194.580:103): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/proc/5176/mountinfo" pid=5176 comm="gnome-logs" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 1616.340457] audit: type=1400 audit(1568653194.580:104): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/proc/5176/mounts" pid=5176 comm="gnome-logs" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 1616.347915] audit: type=1400 audit(1568653194.588:105): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/home/akhil/.profile" pid=5176 comm="pool" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 1616.347922] audit: type=1400 audit(1568653194.588:106): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/home/akhil/.bash_logout" pid=5176 comm="pool" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 1616.347999] audit: type=1400 audit(1568653194.588:107): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/home/akhil/.profile" pid=5176 comm="pool" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 1616.348298] audit: type=1400 audit(1568653194.588:108): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/home/akhil/.python_history" pid=5176 comm="pool" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 1621.965762] kauditd_printk_skb: 48 callbacks suppressed
[ 1621.965767] audit: type=1400 audit(1568653200.208:157): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/proc/5176/mountinfo" pid=5176 comm="gnome-logs" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
[ 1621.965783] audit: type=1400 audit(1568653200.208:158): apparmor="DENIED" operation="open" profile="snap.gnome-logs.gnome-logs" name="/proc/5176/mounts" pid=5176 comm="gnome-logs" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000

В частности, несколько раз показана следующая ошибка:

PCIe Bus Error: severity=Corrected, type=Data Link Layer, (Transmitter ID)

Здесь - содержание var/log/syslog ] тоже.