Power-Management
Thinkpad T400：暫停到高畫質無法恢復
我有一台裝有 Gentoo Linux 的 Thinkpad T400。Suspend-to-RAM 就像一個魅力。
但是，Susped-to-Disk 不起作用：如果我暫停，筆記型電腦會斷電並訪問 HD 大約 30 秒。但是，如果我重新打開它，它會正常啟動，但不會恢復到以前的狀態。
這是
/var/log/pm-suspend.log暫停前的情況：Sun Oct 21 14:16:44 CEST 2012: Finished. Initial commandline parameters: Blacklisting 01grub. Sun Oct 21 15:26:06 CEST 2012: Running hooks for hibernate. Running hook /usr/lib64/pm-utils/sleep.d/00logging hibernate hibernate: Linux rgs-lenovo 3.4.9-gentoo #1 SMP Fri Aug 31 18:55:03 CEST 2012 x86_64 Intel(R) Core(TM)2 Duo CPU P8600 @ 2.40GHz GenuineIntel GNU/Linux Module Size Used by cdc_wdm 8704 0 cdc_acm 14890 0 rfcomm 21490 0 bnep 9782 0 btusb 10904 0 bluetooth 162465 5 rfcomm,bnep,btusb mmc_block 16408 0 nls_iso8859_1 4521 0 nls_cp850 5362 0 vfat 8384 0 fat 45316 1 vfat twofish_x86_64_3way 19478 0 lrw 3622 1 twofish_x86_64_3way twofish_x86_64 5539 1 twofish_x86_64_3way twofish_common 14649 2 twofish_x86_64_3way,twofish_x86_64 aes_x86_64 7768 0 aes_generic 26983 1 aes_x86_64 xts 2912 1 twofish_x86_64_3way gf128mul 7431 2 lrw,xts dm_crypt 13973 0 dm_mod 62853 1 dm_crypt rndis_host 6143 0 cdc_ether 4584 1 rndis_host usbnet 17584 2 rndis_host,cdc_ether arc4 1345 2 sdhci_pci 10056 0 sdhci 20883 1 sdhci_pci firewire_ohci 27077 0 mmc_core 82856 3 mmc_block,sdhci_pci,sdhci firewire_core 49742 1 firewire_ohci crc_itu_t 1635 1 firewire_core iwlwifi 233406 0 snd_hda_codec_conexant 43770 1 mac80211 338064 1 iwlwifi cfg80211 156724 2 iwlwifi,mac80211 snd_hda_intel 22760 4 snd_hda_codec 88731 2 snd_hda_codec_conexant,snd_hda_intel snd_pcm 73911 3 snd_hda_intel,snd_hda_codec snd_timer 18324 2 snd_pcm snd_page_alloc 7332 2 snd_hda_intel,snd_pcm loop 15063 0 vboxnetflt 12915 0 vboxdrv 1759366 1 vboxnetflt fuse 60817 1 thinkpad_acpi 64233 0 snd 59641 12 snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec,snd_pcm,snd_timer,thinkpad_acpi total used free shared buffers cached Mem: 8062552 6417912 1644640 0 427824 4174720 -/+ buffers/cache: 1815368 6247184 Swap: 12582908 0 12582908 /usr/lib64/pm-utils/sleep.d/00logging hibernate hibernate: success. Running hook /usr/lib64/pm-utils/sleep.d/00powersave hibernate hibernate: Blacklisting 01grub. /usr/lib64/pm-utils/sleep.d/00powersave hibernate hibernate: success. Running hook /usr/lib64/pm-utils/sleep.d/01grub hibernate hibernate: /usr/lib64/pm-utils/sleep.d/01grub hibernate hibernate: success. Running hook /usr/lib64/pm-utils/sleep.d/49bluetooth hibernate hibernate: /usr/lib64/pm-utils/sleep.d/49bluetooth hibernate hibernate: success. Running hook /usr/lib64/pm-utils/sleep.d/75modules hibernate hibernate: /usr/lib64/pm-utils/sleep.d/75modules hibernate hibernate: success. Running hook /usr/lib64/pm-utils/sleep.d/90clock hibernate hibernate: /usr/lib64/pm-utils/sleep.d/90clock hibernate hibernate: success. Running hook /usr/lib64/pm-utils/sleep.d/94cpufreq hibernate hibernate: /usr/lib64/pm-utils/sleep.d/94cpufreq hibernate hibernate: success. Running hook /usr/lib64/pm-utils/sleep.d/95led hibernate hibernate: /usr/lib64/pm-utils/sleep.d/95led hibernate hibernate: success. Running hook /usr/lib64/pm-utils/sleep.d/98video-quirk-db-handler hibernate hibernate: Kernel modesetting video driver detected, not using quirks. /usr/lib64/pm-utils/sleep.d/98video-quirk-db-handler hibernate hibernate: success. Running hook /usr/lib64/pm-utils/sleep.d/99video hibernate hibernate: /usr/lib64/pm-utils/sleep.d/99video hibernate hibernate: success. Sun Oct 21 15:26:08 CEST 2012: performing hibernate在
/var/log/syslog我發現以下行：Oct 21 15:27:10 lenovo kernel: PM: Hibernation image not present or could not be loaded.這是我的 grub 配置：
title Gentoo Linux root (hd0,0) kernel /3.4.9-gentoo root=/dev/sda3 rootfstype=ext4 resume=swap:/dev/sda2 i915.modeset=1 fan_control=1
/dev/sda2是我的交換分區。有什麼問題？
我通過更改我的 grub 配置解決了這個問題。不需要參數中
swap:的。resume我的配置現在看起來像這樣：title Gentoo Linux root (hd0,0) kernel /3.4.9-gentoo root=/dev/sda3 rootfstype=ext4 resume=/dev/sda2 i915.modeset=1 fan_control=1