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wiki/concepts/待机-Suspend.md
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wiki/concepts/待机-Suspend.md
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title: "待机 (Suspend)"
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type: concept
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tags: [systemd, power-management, linux]
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date: 2026-04-17
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---
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## Aliases
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- suspend
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## Definition
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Linux 系统电源状态之一,系统进入低功耗睡眠模式,内存保持供电以维持数据。
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## Key Properties
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- 与 [[休眠 (Hibernate)]] 的区别:待机保持内存供电,休眠完全断电
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- 系统进入睡眠状态,功耗降低
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- 唤醒速度快(直接从内存恢复数据)
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## Related Commands
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- `systemctl suspend`:手动进入待机
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- `systemctl mask suspend.target`:禁用待机功能
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- `systemctl mask sleep.target`:禁用睡眠功能(包含待机、休眠、混合睡眠)
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## Use Cases
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- 短时间不使用笔记本时
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- 保持工作状态,快速恢复
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## Connections
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- control_by → [[systemd-logind]]
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