Linux command
pm-suspend 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Suspend to RAM (S3)
sudo pm-suspend
Turn display on after resume if it stays blank
sudo pm-suspend --quirk-dpms-on
Re-POST the video BIOS on resume
sudo pm-suspend --quirk-vbe-post
Save/restore PCI config for the VGA card
sudo pm-suspend --quirk-save-pci
Persist quirks that worked to the last-known-working DB
sudo pm-suspend --store-quirks-as-lkw
说明
pm-suspend puts the machine into ACPI S3 (suspend-to-RAM). Most devices are powered off, but system state is preserved in RAM, allowing near-instant resume at the cost of continuous (small) power draw. Typical laptops can maintain S3 for one to three days on battery. pm-suspend is part of pm-utils. It runs hook scripts in `/etc/pm/sleep.d/` and `/usr/lib/pm-utils/sleep.d/` before sleeping and again on resume. Hooks receive `suspend`/`resume` (or `hibernate`/`thaw`) as their first argument: ```bash #!/bin/sh case "$1" in suspend|hibernate) : # before sleep ;; resume|thaw) : # after wake ;; esac ``` Video hardware is the most common source of resume failures; the `--quirk-*` flags apply well-known workarounds. Use `pm-suspend --auto-quirks` (when supplied by the distribution) or combine `--store-quirks-as-lkw` with the quirks that fix your machine to make them persistent.
参数
- --quirk-dpms-on
- Use DPMS to turn the display on after resume if it remains blank.
- --quirk-dpms-suspend
- Use DPMS to switch the display off before suspending.
- --quirk-radeon-off
- Disable Radeon display before suspend, re-enable on resume (legacy ThinkPads).
- --quirk-s3-bios
- Call the video BIOS during S3 resume.
- --quirk-s3-mode
- Set the video card to VGA text mode, then call the BIOS on resume.
- --quirk-vbe-post
- Re-POST the video card via the VESA BIOS on resume.
- --quirk-vbemode-restore
- Save and restore the VESA mode across suspend to prevent X corruption.
- --quirk-vbestate-restore
- Save and restore low-level video state around suspend.
- --quirk-vga-mode-3
- Force VGA text mode 3 on resume.
- --quirk-save-pci
- Save and restore the PCI configuration space of the VGA card.
- --store-quirks-as-lkw
- If the invocation succeeds, write the quirks used to `/var/cache/pm-utils/last_known_working.quirkdb` so they are applied automatically next time.
- --help
- Show help.
FAQ
What is the pm-suspend command used for?
pm-suspend puts the machine into ACPI S3 (suspend-to-RAM). Most devices are powered off, but system state is preserved in RAM, allowing near-instant resume at the cost of continuous (small) power draw. Typical laptops can maintain S3 for one to three days on battery. pm-suspend is part of pm-utils. It runs hook scripts in `/etc/pm/sleep.d/` and `/usr/lib/pm-utils/sleep.d/` before sleeping and again on resume. Hooks receive `suspend`/`resume` (or `hibernate`/`thaw`) as their first argument: ```bash #!/bin/sh case "$1" in suspend|hibernate) : # before sleep ;; resume|thaw) : # after wake ;; esac ``` Video hardware is the most common source of resume failures; the `--quirk-*` flags apply well-known workarounds. Use `pm-suspend --auto-quirks` (when supplied by the distribution) or combine `--store-quirks-as-lkw` with the quirks that fix your machine to make them persistent.
How do I run a basic pm-suspend example?
Run `sudo pm-suspend` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does --quirk-dpms-on do in pm-suspend?
Use DPMS to turn the display on after resume if it remains blank.