Hibernation is a way that some animals deal with the harshness of winter. They curl up in a safe place and stay there until winter ends. Hibernating animals seem almost dead. They barely breathe, and their body temperature is near the freezing mark. In warmer weather they return to their regular activities.
The classic Mac OS once also supported hibernation, but this feature was dropped by Apple. In the Linux kernel, hibernation is implemented by swsusp which is built into the 2.6 series. An alternative implementation is TuxOnIce which is available as patches for the kernel version 3.4. The classic Mac OS once also supported hibernation, but this feature was dropped by Apple. In the Linux kernel, hibernation is implemented by swsusp which is built into the 2.6 series. An alternative implementation is TuxOnIce which is available as patches for the kernel version 3.4.
Animals that hibernate are called hibernators. They include bats, hedgehogs, ground squirrels, groundhogs, and marmots.
Hibernators like dark, quiet winter homes. Some go underground or into caves. They may line their hibernation place with grass, hair, and other materials.
Hibernators prepare for winter with extra eating. They store fat to keep them alive during the months when they do not eat. Some hibernators collect and store food before hibernating. At times during hibernation, these animals arise to eat and then return to hibernating.
A hibernator’s body responds to weather conditions. If the weather becomes too cold, the animal needs to move around to raise its body temperatures. An animal that does not do this may die. Warmer temperatures tell an animal to come out of hibernation.
Many animals save energy in the winter by sleeping more, but these animals are not truly hibernating. When an animal just sleeps, its body temperature does not drop much. In addition, noise can wake a sleeping animal but not a hibernator.
Hibernation Mac
Bears are an example of animals that change their activities in the winter but are not true hibernators. They spend most of the winter asleep, but their body temperature barely drops. A bear will move around if woken up. Also, females give birth and nurse during this time.
Only certain mammals are true hibernators. But other kinds of animals do something similar. Many reptiles and amphibians of mild climates become inactive in winter. Frogs and toads rest in holes or in mud at pond bottoms. Snakes may crowd together in caves. Many insects and spiders are frozen solid during the winter.
Disable Hibernation Mac
I have a MBP 13' Late 2011. Since I upgraded from Lion to Mountian Lion my Mac goes into hibernation and will only wake when I hold down the power button for 4-5 seconds, release it, then press the power button again. I didn't have this behavior prior to Mountian Lion upgrade. Prior to the upgrade I would just wake by pressing the keyboard or mouse. Now once I do get it to wake with the procedure mentioned above. The screen is dimmed, a little progress indicator shows near the bottom of the screen and it takes about 40 seconds before my Mac is usable from this state.
Hibernation Command For Mac
MacBook Pro, OS X Mountain Lion
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