在 Thinkpad X220 上运行 ArchLinux 和 GNOME 3。
当我暂停笔记本电脑时，它会进入睡眠模式，并且电源按钮周围的 LED 环会淡入和淡出。
当暂停失败时，LED 环和屏幕会亮起，但我无能为力。我唯一的恢复就是进行硬重置。
这种情况仅在过去几个月内发生 33 - 50% 的时间，但一年前从未发生过。
我该如何调试/解决这个问题？
输出来自sudo journalctl --since=today | tac | sed -n '/-- Reboot --/{n;:r;/-- Reboot --/q;p;n;b r}' | tac：
Mar 17 15:10:49 noa systemd-logind[349]: Suspend key pressed.
Mar 17 15:10:49 noa NetworkManager[332]: <info> sleep requested (sleeping: no enabled: yes)
Mar 17 15:10:49 noa NetworkManager[332]: <info> sleeping or disabling...
Mar 17 15:10:49 noa NetworkManager[332]: <info> (eth0): device state change: unavailable -> unmanaged (reason 'sleeping') [20 10 37]
Mar 17 15:10:49 noa NetworkManager[332]: <info> (eth0): cleaning up...
Mar 17 15:10:49 noa NetworkManager[332]: <info> (eth0): taking down device.
Mar 17 15:10:50 noa NetworkManager[332]: <info> (wlan0): device state change: disconnected -> unmanaged (reason 'sleeping') [30 10 37]
Mar 17 15:10:50 noa NetworkManager[332]: <info> (wlan0): cleaning up...
Mar 17 15:10:50 noa NetworkManager[332]: <info> (wlan0): taking down device.
Mar 17 15:10:50 noa systemd[1]: Starting Sleep.
Mar 17 15:10:50 noa systemd[1]: Reached target Sleep.
Mar 17 15:10:50 noa systemd[1]: Starting Suspend...
Mar 17 15:10:50 noa dbus-daemon[353]: dbus[353]: [system] Rejected send message, 2 matched rules; type="method_return", sender=":1.1" (uid=0 pid=349 comm="/usr/lib/systemd/systemd-logind ") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.57" (uid=1000 pid=638 comm="gnome-session --session=xmonad ")
Mar 17 15:10:50 noa dbus[353]: [system] Rejected send message, 2 matched rules; type="method_return", sender=":1.1" (uid=0 pid=349 comm="/usr/lib/systemd/systemd-logind ") interface="(unset)" member="(unset)" error name="(unset)" requested_reply="0" destination=":1.57" (uid=1000 pid=638 comm="gnome-session --session=xmonad ")