今天我发现，在新安装的 Debian Jessie 中，挂起功能有时无法正常工作。执行挂起（Alt + 关机按钮）后，黑屏上会出现以下消息：
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系统日志如下。欢迎提出任何建议。
Jul 12 18:53:10 svarog kernel: [ 0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
Jul 12 18:53:10 svarog kernel: [ 0.000000] PM: Registered nosave memory: [mem 0x000a0000-0x000effff]
Jul 12 18:53:10 svarog kernel: [ 0.000000] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff]
Jul 12 18:53:10 svarog kernel: [ 0.000000] PM: Registered nosave memory: [mem 0xcaf80000-0xcafa2fff]
Jul 12 18:53:10 svarog kernel: [ 0.000000] PM: Registered nosave memory: [mem 0xcafa3000-0xcafdffff]
Jul 12 18:53:10 svarog kernel: [ 0.000000] PM: Registered nosave memory: [mem 0xcafe0000-0xcaffffff]
Jul 12 18:53:10 svarog kernel: [ 0.000000] PM: Registered nosave memory: [mem 0xcb000000-0xefffffff]
Jul 12 18:53:10 svarog kernel: [ 0.000000] PM: Registered nosave memory: [mem 0xf0000000-0xf3ffffff]
Jul 12 18:53:10 svarog kernel: [ 0.000000] PM: Registered nosave memory: [mem 0xf4000000-0xfebfffff]
Jul 12 18:53:10 svarog kernel: [ 0.000000] PM: Registered nosave memory: [mem 0xfec00000-0xffffffff]
Jul 12 18:53:10 svarog kernel: [ 0.160200] PM: Registering ACPI NVS region [mem 0xcaf80000-0xcafa2fff] (143360 bytes)
Jul 12 18:53:10 svarog kernel: [ 0.804259] PM: Hibernation image not present or could not be loaded.
Jul 12 18:53:10 svarog kernel: [ 3.909872] PM: Starting manual resume from disk
Jul 12 18:53:10 svarog kernel: [ 3.909878] PM: Hibernation image partition 8:5 present
Jul 12 18:53:10 svarog kernel: [ 3.909879] PM: Looking for hibernation image.
Jul 12 18:53:10 svarog kernel: [ 3.916677] PM: Image not found (code -22)
Jul 12 18:53:10 svarog kernel: [ 3.916682] PM: Hibernation image not present or could not be loaded.