在过去的几个月里，Ubuntu（20.04，在 ThinkPad T480 上）大约每周崩溃一次。当它发生时，一切都开始变慢（一切都开始变得无响应/滞后，直到鼠标开始变慢，然后屏幕完全冻结）。Ctrl++ALT没有F3任何作用，我似乎别无选择，只能硬重启电脑。我当时通常使用 Firefox，但我不确定这是否意味着什么，因为我大部分时间都在使用 Firefox。
我认为是时候弄清楚发生了什么，以及我能做些什么。在另一个问题上，我看到查看journalctl -b -1 -e崩溃后的输出可能会有所帮助，我这样做了，并将输出上传到https://pastebin.com/yZQpK5KT（以下是符合 stackexchange 字符限制的摘录）
May 14 13:30:04 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400525.
May 14 13:30:06 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x540052c.
May 14 13:30:57 Halley gnome-shell[32836]: ###!!! [Parent][RunMessage] Error: Channel closing: too late to send/recv, messages will be lost
May 14 13:32:36 Halley systemd[1]: Started Run anacron jobs.
May 14 13:32:36 Halley anacron[78434]: Anacron 2.3 started on 2021-05-14
May 14 13:32:36 Halley anacron[78434]: Normal exit (0 jobs run)
May 14 13:32:36 Halley systemd[1]: anacron.service: Succeeded.
May 14 13:35:27 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400533.
May 14 13:36:19 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x540053a.
May 14 13:36:30 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400541.
May 14 13:37:10 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400548.
May 14 13:37:16 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x540054f.
May 14 13:37:18 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400556.
May 14 13:37:25 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x540055d.
May 14 13:37:38 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400564.
May 14 13:37:50 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x540056b.
May 14 13:37:52 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400572.
May 14 13:37:54 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400579.
May 14 13:38:41 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400580.
May 14 13:39:48 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400587.
May 14 13:40:58 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x540058e.
May 14 13:43:04 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400595.
May 14 13:43:32 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x540059c.
May 14 13:43:40 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005a3.
May 14 13:44:45 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005aa.
May 14 13:45:12 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005b1.
May 14 13:49:16 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005b8.
May 14 13:50:12 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005bf.
May 14 13:50:16 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005c6.
May 14 13:51:01 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005cd.
May 14 13:51:17 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005d4.
May 14 13:51:29 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005db.
May 14 13:51:49 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005e2.
May 14 13:52:09 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005e9.
May 14 13:54:44 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005f0.
May 14 13:55:10 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005f7.
May 14 13:55:55 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x54005fe.
May 14 13:56:05 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400605.
May 14 13:56:08 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x540060c.
May 14 13:58:13 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400613.
May 14 13:58:21 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x540061a.
May 14 14:00:16 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400621.
May 14 14:00:52 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400628.
May 14 14:01:07 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x540062f.
May 14 14:03:58 Halley gnome-shell[1807]: Window manager warning: Invalid WM_TRANSIENT_FOR window 0x5400014 specified for 0x5400636.
May 14 14:04:29 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-5ms), your system is too slow
May 14 14:04:29 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-19ms), your system is too slow
May 14 14:04:31 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-7ms), your system is too slow
May 14 14:04:33 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-8ms), your system is too slow
May 14 14:04:33 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-21ms), your system is too slow
May 14 14:04:35 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-9ms), your system is too slow
May 14 14:05:35 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 31 with keysym 31 (keycode a).
May 14 14:05:35 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 32 with keysym 32 (keycode b).
May 14 14:05:35 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 33 with keysym 33 (keycode c).
May 14 14:05:35 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 34 with keysym 34 (keycode d).
May 14 14:05:35 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 35 with keysym 35 (keycode e).
May 14 14:05:35 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 36 with keysym 36 (keycode f).
May 14 14:05:35 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 38 with keysym 38 (keycode 11).
May 14 14:05:35 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 39 with keysym 39 (keycode 12).
May 14 14:05:35 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 37 with keysym 37 (keycode 10).
May 14 14:17:01 Halley CRON[79125]: pam_unix(cron:session): session opened for user root by (uid=0)
May 14 14:17:01 Halley CRON[79126]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
May 14 14:17:02 Halley CRON[79125]: pam_unix(cron:session): session closed for user root
May 14 14:17:10 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-2ms), your system is too slow
May 14 14:17:10 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-26ms), your system is too slow
May 14 14:18:30 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-6ms), your system is too slow
May 14 14:18:57 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-33 noise=9999 txrate=130000
May 14 14:19:04 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-35 noise=9999 txrate=144400
May 14 14:19:15 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-34 noise=9999 txrate=130000
May 14 14:19:31 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-44 noise=9999 txrate=144400
May 14 14:19:39 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-36 noise=9999 txrate=144400
May 14 14:19:51 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-36 noise=9999 txrate=52000
May 14 14:19:59 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-1ms), your system is too slow
May 14 14:20:03 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-36 noise=9999 txrate=144400
May 14 14:20:33 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-36 noise=9999 txrate=144400
May 14 14:20:40 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-34 noise=9999 txrate=65000
May 14 14:20:45 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-36 noise=9999 txrate=144400
May 14 14:21:09 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-33 noise=9999 txrate=144400
May 14 14:21:15 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-36 noise=9999 txrate=144400
May 14 14:23:01 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-12ms), your system is too slow
May 14 14:23:01 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-25ms), your system is too slow
May 14 14:30:01 Halley CRON[79289]: pam_unix(cron:session): session opened for user root by (uid=0)
May 14 14:30:01 Halley CRON[79290]: (root) CMD ([ -x /etc/init.d/anacron ] && if [ ! -d /run/systemd/system ]; then /usr/sbin/invoke-rc.d anacron start >/dev/null; fi)
May 14 14:30:01 Halley CRON[79289]: pam_unix(cron:session): session closed for user root
May 14 14:35:10 Halley systemd[1]: Started Run anacron jobs.
May 14 14:35:10 Halley anacron[79347]: Anacron 2.3 started on 2021-05-14
May 14 14:35:10 Halley anacron[79347]: Normal exit (0 jobs run)
May 14 14:35:10 Halley systemd[1]: anacron.service: Succeeded.
May 14 14:37:21 Halley wpa_supplicant[855]: wlp3s0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-36 noise=9999 txrate=144400
May 14 14:37:45 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-12ms), your system is too slow
May 14 14:37:45 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-25ms), your system is too slow
May 14 14:38:33 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-1ms), your system is too slow
May 14 14:38:38 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-14ms), your system is too slow
May 14 14:38:38 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-27ms), your system is too slow
May 14 14:39:33 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-2ms), your system is too slow
May 14 14:41:59 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-11ms), your system is too slow
May 14 14:41:59 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-24ms), your system is too slow
May 14 14:43:10 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 31 with keysym 31 (keycode a).
May 14 14:43:10 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 32 with keysym 32 (keycode b).
May 14 14:43:10 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 33 with keysym 33 (keycode c).
May 14 14:43:10 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 34 with keysym 34 (keycode d).
May 14 14:43:10 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 35 with keysym 35 (keycode e).
May 14 14:43:10 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 36 with keysym 36 (keycode f).
May 14 14:43:10 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 38 with keysym 38 (keycode 11).
May 14 14:43:10 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 39 with keysym 39 (keycode 12).
May 14 14:43:10 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 37 with keysym 37 (keycode 10).
May 14 14:43:41 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 31 with keysym 31 (keycode a).
May 14 14:43:41 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 32 with keysym 32 (keycode b).
May 14 14:43:41 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 33 with keysym 33 (keycode c).
May 14 14:43:41 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 34 with keysym 34 (keycode d).
May 14 14:43:41 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 35 with keysym 35 (keycode e).
May 14 14:43:41 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 36 with keysym 36 (keycode f).
May 14 14:43:41 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 38 with keysym 38 (keycode 11).
May 14 14:43:41 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 39 with keysym 39 (keycode 12).
May 14 14:43:41 Halley gnome-shell[1807]: Window manager warning: Overwriting existing binding of keysym 37 with keysym 37 (keycode 10).
May 14 14:53:34 Halley audit[79621]: AVC apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/run/user/1000/ICEauthority" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
May 14 14:53:34 Halley kernel: audit: type=1400 audit(1621029214.593:143): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/run/user/1000/ICEauthority" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
May 14 14:53:34 Halley kernel: audit: type=1400 audit(1621029214.593:144): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/run/user/1000/ICEauthority" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
May 14 14:53:34 Halley kernel: audit: type=1400 audit(1621029214.593:145): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/run/user/1000/ICEauthority" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
May 14 14:53:34 Halley kernel: audit: type=1400 audit(1621029214.593:146): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/run/user/1000/ICEauthority" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
May 14 14:53:34 Halley audit[79621]: AVC apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/run/user/1000/ICEauthority" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
May 14 14:53:34 Halley audit[79621]: AVC apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/run/user/1000/ICEauthority" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
May 14 14:53:34 Halley audit[79621]: AVC apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/run/user/1000/ICEauthority" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
May 14 14:53:36 Halley audit[79621]: AVC apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/usr/share/zoneinfo-icu/44/le/zoneinfo64.res" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 14 14:53:36 Halley kernel: audit: type=1400 audit(1621029216.005:147): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/usr/share/zoneinfo-icu/44/le/zoneinfo64.res" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 14 14:53:36 Halley kernel: audit: type=1400 audit(1621029216.021:148): apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/usr/share/zoneinfo-icu/44/le/timezoneTypes.res" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 14 14:53:36 Halley audit[79621]: AVC apparmor="ALLOWED" operation="open" profile="libreoffice-soffice" name="/usr/share/zoneinfo-icu/44/le/timezoneTypes.res" pid=79621 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
May 14 14:57:14 Halley nautilus[18122]: gtk_widget_get_mapped: assertion 'GTK_IS_WIDGET (widget)' failed
May 14 14:57:14 Halley nautilus[18122]: gdk_window_is_visible: assertion 'GDK_IS_WINDOW (window)' failed
May 14 14:57:14 Halley nautilus[18122]: gdk_window_show_internal: assertion 'GDK_IS_WINDOW (window)' failed
May 14 14:57:14 Halley nautilus[18122]: gtk_widget_set_opacity: assertion 'GTK_IS_WIDGET (widget)' failed
May 14 14:57:14 Halley nautilus[18122]: gtk_widget_queue_draw: assertion 'GTK_IS_WIDGET (widget)' failed
May 14 14:57:16 Halley nautilus[18122]: gtk_widget_get_mapped: assertion 'GTK_IS_WIDGET (widget)' failed
May 14 14:57:16 Halley nautilus[18122]: gdk_window_is_visible: assertion 'GDK_IS_WINDOW (window)' failed
May 14 14:57:16 Halley nautilus[18122]: gtk_widget_set_opacity: assertion 'GTK_IS_WIDGET (widget)' failed
May 14 14:57:16 Halley nautilus[18122]: gtk_widget_queue_draw: assertion 'GTK_IS_WIDGET (widget)' failed
May 14 14:58:37 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-14ms), your system is too slow
May 14 14:58:37 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-35ms), your system is too slow
May 14 14:58:38 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-12ms), your system is too slow
May 14 14:58:38 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-25ms), your system is too slow
May 14 14:59:03 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-11ms), your system is too slow
May 14 14:59:14 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-6ms), your system is too slow
May 14 14:59:14 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-20ms), your system is too slow
May 14 15:00:53 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce: scheduled expiry is in the past (-8ms), your system is too slow
May 14 15:00:53 Halley /usr/lib/gdm3/gdm-x-session[1661]: (EE) client bug: timer event4 debounce short: scheduled expiry is in the past (-5ms), your system is too slow
不幸的是，我不知道如何解释那里的信息，是否有人清楚问题是什么（如果不是，我应该做些什么不同的事情来找出答案？）
编辑：根据 heynnema 的要求，这里提供了更多数据（这是在上次崩溃后不久获得的）：
matt@Halley:~$ free -h
total used free shared buff/cache available
Mem: 7.5Gi 4.4Gi 651Mi 1.0Gi 2.5Gi 1.9Gi
Swap: 2.0Gi 11Mi 2.0Gi
matt@Halley:~$ sysctl vm.swappiness
vm.swappiness = 60
matt@Halley:~$ sudo swapon -s
[sudo] password for matt:
Filename Type Size Used Priority
/swapfile file 2097148 11912 -2
matt@Halley:~$ sudo lshw -C memory
*-memory
description: System Memory
physical id: 3
slot: System board or motherboard
size: 8GiB
*-bank:0
description: SODIMM DDR4 Synchronous Unbuffered (Unregistered) 2400 MHz (0.4 ns)
product: RMSA3260ME78HAF-2666
vendor: Fujitsu
physical id: 0
serial: 13AE98AD
slot: ChannelA-DIMM0
size: 8GiB
width: 64 bits
clock: 2400MHz (0.4ns)
*-bank:1
description: [empty]
physical id: 1
slot: ChannelB-DIMM0
*-cache:0
description: L1 cache
physical id: 7
slot: L1 Cache
size: 256KiB
capacity: 256KiB
capabilities: synchronous internal write-back unified
configuration: level=1
*-cache:1
description: L2 cache
physical id: 8
slot: L2 Cache
size: 1MiB
capacity: 1MiB
capabilities: synchronous internal write-back unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: 9
slot: L3 Cache
size: 6MiB
capacity: 6MiB
capabilities: synchronous internal write-back unified
configuration: level=3
*-firmware
description: BIOS
vendor: LENOVO
physical id: b
version: N24ET56W (1.31 )
date: 02/19/2020
size: 128KiB
capacity: 16MiB
capabilities: pci pnp upgrade shadowing cdboot bootselect edd int13floppy720 int5printscreen int9keyboard int14serial int17printer int10video acpi usb biosbootspecification uefi
*-memory UNCLAIMED
description: Memory controller
product: Sunrise Point-LP PMC
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 21
width: 32 bits
clock: 33MHz (30.3ns)
configuration: latency=0
resources: memory:e824c000-e824ffff
matt@Halley:~$ top
top - 23:05:19 up 8:03, 1 user, load average: 2.11, 1.67, 1.44
Tasks: 280 total, 1 running, 279 sleeping, 0 stopped, 0 zombie
%Cpu(s): 2.2 us, 1.4 sy, 0.0 ni, 96.4 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 7724.2 total, 624.1 free, 4521.5 used, 2578.6 buff/cache
MiB Swap: 2048.0 total, 2036.4 free, 11.6 used. 1937.7 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
8992 matt 20 0 11984 4052 3404 R 12.5 0.1 0:00.02 top
2362 matt 20 0 5522484 967284 442828 S 6.2 12.2 85:46.18 firefox
2824 matt 20 0 4433992 645336 301120 S 6.2 8.2 15:49.62 Web Con+
4189 matt 20 0 2686508 267744 139680 S 6.2 3.4 2:22.87 Web Con+
4296 matt 20 0 481496 54644 39800 S 6.2 0.7 0:14.45 gnome-t+
1 root 20 0 167508 10980 7844 S 0.0 0.1 1:08.18 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.02 kthreadd
3 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_gp
4 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 rcu_par+
6 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 kworker+
9 root 0 -20 0 0 0 I 0.0 0.0 0:00.00 mm_perc+
10 root 20 0 0 0 0 S 0.0 0.0 0:01.20 ksoftir+
11 root 20 0 0 0 0 I 0.0 0.0 0:17.09 rcu_sch+
12 root rt 0 0 0 0 S 0.0 0.0 0:00.43 migrati+
13 root -51 0 0 0 0 S 0.0 0.0 0:00.00 idle_in+
14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/0
15 root 20 0 0 0 0 S 0.0 0.0 0:00.00 cpuhp/1
还有更多：
matt@Halley:~/Dropbox/introduction to combinatorics/homework 2021$ ls -al /var/crash
total 8
drwxrwsrwt 2 root whoopsie 4096 May 11 01:55 .
drwxr-xr-x 14 root root 4096 Oct 17 2019 ..
答案1
交换
笔记：您的使用情况表明您可能需要添加更多 RAM。
你的2G /swapfile太小了，让我们将其增加到4G......
笔记：错误使用rm和dd命令可能会导致数据丢失。建议复制/粘贴。
在里面terminal...
sudo swapoff -a # turn off swap
sudo rm -i /swapfile # remove old /swapfile
sudo dd if=/dev/zero of=/swapfile bs=1M count=4096
sudo chmod 600 /swapfile # set proper file protections
sudo mkswap /swapfile # init /swapfile
sudo swapon /swapfile # turn on swap
free -h # confirm 8G RAM and 4G swap
sudo -H gedit /etc/fstab使用或编辑 /etc/fstab sudo pico /etc/fstab。
确认 /etc/fstab 中的此 /swapfile 行...并确认没有其他“交换”行...在此行中使用空格...确认没有制表符...
/swapfile none swap sw 0 0
reboot # reboot and verify operation