Systemd
筆記型電腦經常掛起
我在使用新的 Debian 11 筆記型電腦時遇到了問題，它有些日子可以正常工作，但有時它會在起床約 30 秒後反復進入睡眠狀態。
stew@simswe28:~$ sudo systemctl status sleep.target suspend.target hibernate.target hybrid-sleep.target ● sleep.target - Sleep Loaded: loaded (/lib/systemd/system/sleep.target; static) Active: inactive (dead) Docs: man:systemd.special(7) Aug 24 08:18:36 simswe28 systemd[1]: Reached target Sleep. Aug 24 08:18:46 simswe28 systemd[1]: Stopped target Sleep. Aug 24 08:19:14 simswe28 systemd[1]: Reached target Sleep. Aug 24 08:22:14 simswe28 systemd[1]: Stopped target Sleep. Aug 24 08:22:42 simswe28 systemd[1]: Reached target Sleep. Aug 24 08:25:40 simswe28 systemd[1]: Stopped target Sleep. Aug 24 08:26:10 simswe28 systemd[1]: Reached target Sleep. Aug 24 08:26:42 simswe28 systemd[1]: Stopped target Sleep. Aug 24 08:27:10 simswe28 systemd[1]: Reached target Sleep. Aug 24 08:27:19 simswe28 systemd[1]: Stopped target Sleep. ● suspend.target - Suspend Loaded: loaded (/lib/systemd/system/suspend.target; static) Active: inactive (dead) Docs: man:systemd.special(7) Aug 24 08:18:46 simswe28 systemd[1]: Reached target Suspend. Aug 24 08:18:46 simswe28 systemd[1]: Stopped target Suspend. Aug 24 08:22:14 simswe28 systemd[1]: Reached target Suspend. Aug 24 08:22:14 simswe28 systemd[1]: Stopped target Suspend. Aug 24 08:25:40 simswe28 systemd[1]: Reached target Suspend. Aug 24 08:25:40 simswe28 systemd[1]: Stopped target Suspend. Aug 24 08:26:42 simswe28 systemd[1]: Reached target Suspend. Aug 24 08:26:42 simswe28 systemd[1]: Stopped target Suspend. Aug 24 08:27:19 simswe28 systemd[1]: Reached target Suspend. Aug 24 08:27:19 simswe28 systemd[1]: Stopped target Suspend. ● hibernate.target - Hibernate Loaded: loaded (/lib/systemd/system/hibernate.target; static) Active: inactive (dead) Docs: man:systemd.special(7) ● hybrid-sleep.target - Hybrid Suspend+Hibernate Loaded: loaded (/lib/systemd/system/hybrid-sleep.target; static) Active: inactive (dead) Docs: man:systemd.special(7)對於確認硬體問題或隔離配置問題，我可以提供一些想法嗎？想提高
suspend.target什麼？
您可以使用
sudo systemctl mask suspend.target. 這將阻止您的機器不斷掛起。然而，根本原因仍然存在。達到穩定狀態後，環顧四周，找出導致暫停的原因。一種選擇可能是電源按鈕鬆動。
acpi_listen通過從 package執行來確認acpid。如果看到電源按鈕事件或筆記型電腦蓋開關關閉，您將看到以下類型的消息：~$ acpi_listen button/power PBTN 00000080 00000000 button/power LNXPWRBN:00 00000080 00000001 button/lid LID open button/lid LID close button/lid LID open如果它執行了一段時間沒有消息，那麼這不是你的問題。
如果您注意到任何程序佔用了大量資源，那麼這些都值得檢查。就我而言，我的粉絲聲音很大，並註意到
systemd-{logind,journal}使用以下命令佔用了大量資源top：PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 724 root 20 0 515012 8348 6880 R 87.5 0.1 7:15.06 systemd-logind 321 root 20 0 482776 306700 304868 S 12.5 1.9 0:55.29 systemd-journal
journalctl -f將有助於隔離這些過程的原因。就我而言，這不斷重複：Aug 24 08:44:42 simswe28 systemd-logind[724]: Suspending... Aug 24 08:44:42 simswe28 systemd-logind[724]: Unit suspend.target is masked, refusing operation. Aug 24 08:44:42 simswe28 systemd-logind[724]: Failed to execute suspend operation: Permission denied Aug 24 08:44:42 simswe28 systemd-logind[724]: Suspending... Aug 24 08:44:42 simswe28 systemd-logind[724]: Unit suspend.target is masked, refusing operation. Aug 24 08:44:42 simswe28 systemd-logind[724]: Failed to execute suspend operation: Permission denied Aug 24 08:44:42 simswe28 systemd-logind[724]: Suspending... Aug 24 08:44:42 simswe28 systemd-logind[724]: Unit suspend.target is masked, refusing operation. Aug 24 08:44:42 simswe28 systemd-logind[724]: Failed to execute suspend operation: Permission denied在這種情況下，
systemd-logind是對某個信號作出反應。可以通過 隔離和抑制信號/etc/systemd/logind.conf。就我而言，我一次將多個選項設置為
ignore，然後systemctl unmask suspend.target && systemctl restart systemd-logind。我發現HandleLidSwitch=從改變suspend到ignore解決問題（即使acpi_listen沒有記錄蓋子開關事件）。