Does scheduled startup shutdown use more power

Hello. I have a computer that the power supply is starting to go out on. I've seen it multiple times and it's in it's early stages. My question is does using the scheduled startup and shutdown require more power and should I turn it off? Thanks.

Check all of your settings and make sure you have optimized them all, sometimes when you do an upgrade it changes your settings. ie, notifications, location services, date and time auto, etc.

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Does the guest network use more electricity?

Does turning on the guest network cause the Airport Extreme to use more electricity?
I wonder if I can save some money by turning it off since I don't have guests over that require WiFi very often. Also would the unit run any cooler w/o the guest network?
Thanks for your help.
Olaf

Does turning on the guest network cause the Airport Extreme to use more electricity?
Of course.
Also would the unit run any cooler w/o the guest network?
Maybe marginally.

Does 10.4.7 use more RAM?

I have been running 10.4.5 until yesterday when I erase and installed, and let Software Update install 10.4.7 on my Mini.
I also use Menu Meters and was shocked to see that about 285 MB were being used by the OS, Safari, Mail, Adium and xchat aqua...I think it's a lot considering most of the apps were really just sitting there, and I wasn't watching Video Bomb in Safari.
I noticed something called kernel task is taking between 92 and 98 MB. don't know if this is normal, but under 10.4.5, I seem to have only used 150 or 160 or so MB of RAM withe the same apps open as above.
is it me, or does 10.4.7 use a significant amount of RAM more. To me, 10% is significant.
thank you!
r

In that case there isn't much you can do. However, unless you are actually running out of memory I wouldn't worry too much about it. OS X's memory management is pretty good, and as long as you have ample space on the hard drive for swap space there should be little need for concern. However, if you find you are experiencing a lot of disk thrashing and extreme slowdowns when memory is maxed, then you need to quit some applications to avoid continued use of VM. You may also want to read more about memory management in OS X:
http://www.macosxhints.com/article.php?story=20010613140025184
http://docs.info.apple.com/article.html?artnum=107918

After upgrade to Mavericks I have to shutdown using the power button. Any fix for this?

I have a mid 2011 iMac, just upgraded to OSX Mavericks. It will no longer shut down using the menu. I have to push and hold the power button. This sometimes results in a very loud "snap" from my machine. Tried reinstalling but still does the same. Any fix for this? If not, how do I redownload Mountain Lion?

If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Step 1
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Enter "BOOT_TIME" (without the quotes) in the search box. Note the timestamps of those log messages, which refer to the times when the system was booted. Now clear the search box and scroll back in the log to the last boot time after you had the problem. Select the messages logged before the boot, while the system was unresponsive or was failing to shut down. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message (command-V). Please include the BOOT_TIME message at the end of the log extract.
If there are runs of repeated messages, post only one example of each. Don’t post many repetitions of the same message.
When posting a log extract, be selective. In most cases, a few dozen lines are more than enough.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some private information, such as your name, may appear in the log. Anonymize before posting.
Step 2
Still in Console, look under System Diagnostic Reports for crash or panic logs, and post the entire contents of the most recent one, if any. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header of the report, if present (it may not be.) Please don’t post shutdownStall, spin, or hang logs — they're very long and not helpful.

Does a force shutdown affect subsequent power on?

I've a 2004 G4 Powerbook Aluminium 15" A1046 and I was running iTunes and the screen went dark. The computer was still running but I couldn't get the picture back. Bad inverter I assumed and powered the book down by holding the power switch till if went off.
Now it doesn't switch on again. Did I affect something by forced shutdown?

Are you using the internal battery or power adapter?
Troubleshooting portables that won't turn on or start up
http://support.apple.com/kb/TA25686?viewlocale=en_US
Troubleshooting: My computer won't turn on
http://support.apple.com/kb/TS1367
 Cheers, Tom

I-Mac does not startup anymore since a power failure.

My I-Mac does not start up anymore since there was a general power failure in house.
After power came back I disconnected the power cord for 1 hour and thereafter tried again.
No results.
What can I do now ?
Thanks for help.

One thing to remember, after the computer has been unplugged for a while and then you plug it in, WAIT for maybe 10 or more seconds before you try to start. I have had a few ocassions where going directly from plug in to power button would not bring the computer up.
Just for info, what happens when you HOLD the "Apple" key also called Command Key before powering up and continuing to hold it for maybe 30 seconds? That should bring up a list of all available boot sources. That would include a Recovery Partition which would then allow you to do a permissions repair (via disk utility) and Verify disk.
You could also hold the "T" key while booting up until a "Y" Firewire symbol appears on the screen. That would convert your computer into an external Firewire drive which could be plugged in via a Firewire cable, to another MAC and let you retrieve files from your computer's hard drive.
Both of these options are based on the power supply and logic board still working. If you do not get those indications, then a trip to the repair center is probably in order.

Does Moc OSX Lion use more battery than Snow Leopard?

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I have had my MBP since July 2011, and am at 22 cycles.
You must run soley on battery charge, almost never plugged in.
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Running Lithium-Ion batteries almost dead create a "memory" that can make your MBP unchargeable.

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How to schedule auto shutdown and not wait 10 minutes

I am working on an installation of a mac mini at a kiosk and need it to shutdown at a certain time every day. But when I set it to shutdown at 9pm a countdown starts from 10minutes. Is there a way to make this shutdown in 30 seconds?

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shutdown -h now
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CPU frequency does not down-clock when idle, Power waste or is this OK?

I was browsing through the BSD sysctl's of OSX 10.6.2 today and noticed something I thought odd. Looking this up on different searches produced no useful results so I thought I'd ask here.
It seems that the MacBook late 2006 Core2Duo T7200 model has no cpu speed scaling. As far as I can tell, looking in the 'sysctl' output gave me these results:
sysctl -a |grep freq
hw.busfrequency = 664000000
hw.cpufrequency = 2000000000
hw.tbfrequency = 1000000000
hw.busfrequency: 664000000
hw.busfrequency_min: 664000000
hw.busfrequency_max: 664000000
hw.cpufrequency: 2000000000
hw.cpufrequency_min: 2000000000
hw.cpufrequency_max: 2000000000
hw.tbfrequency: 1000000000
What this shows, CPU frequency maximum minimum are both 2 GHz, bus max and min are also 664mhz. These should be able to change I would think.
(The "tbfrequency" value I believe is timer speed; 1gigahertz assures smooth media playback and interactivity. This is not the issue)
I was under the impression that Core 2 Duo's were supposed to have "SpeedStep", to make the cpu run slower to draw less power and generate less heat. On my desktop, this definitely works and I have measured it with my Kill-A-Watt meter. I would think the same happens with all cpus, so I wonder: In my macbook, is the lack of slowing down the CPU using more power than necessary?
(edited to add more detail)

I'm sure it's slightly less efficient. However, any CPU will still use a lot less power when there's less of a load (as you can see by running CPU-intensive tasks and watching the battery drain compared to when nothing is open).

Make Spotlight (& the OS) use more CPU power?

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For example I have iStat menus displaying the CPU usage. When I do Spotlight searches I'll start typing but before I can finish typing my search Spotlight will start grinding away, not letting me finish what I want to type. But looking at the CPU usage in the menu bar both cores are only at around 50%. I'll have to wait for Spotlight to calm down before I can finish typing my search.
I looked around in System Preferences > Energy Saver > Options & set Processor Performance to highest but it seems a lot of the time the OS doesn't use as much CPU power as it could.
Is there any way to make the OS, specifically when using Spotlight use more CPU power?

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dyno wrote:
why?i rip all my cd's in wma,y does wma files use more battery life?
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I downloaded the new Firefox but it constantly freezes, doing absolutely nothing, and I can't even close it from my Mac dock bar, I have to turn off my laptop using the power button as Firefox won't let me shut down. What can I do?

Hi
I recently downloaded the new Firefox (Firefox 4, I think - you can tell I'm very tech savvy!) and it constantly freezes, I can't do anything with it at all - I can't even close it from the icon in my Mac dock bar.
I have tried restarting my computer - though I have to turn it off by using the power button as as Firefox is open and totally unresponsive it won't let me shut down. About a minute after re-starting Firefox, restoring my tabs or starting afresh, it freezes again.
This is obviously very annoying and I'm not sure what I can do about it. Firefox is my preferred browser, and I'd really like to be able to use it again!

This is not a reply. I just want to elaborate on this problem.
My computer freezes occasionally when it is used after being sleep for a while. The spinning ball appears and everything is totally disabled. Nothing on the keyboard works.
The mouse moves, but does not work.
The only solution is to turn the power off and on (losing all data in open applications.)
I kept the System monitor running on the side to find out which program was running when the computer froze. The Monitor as well as all other applications froze, but the data showed:
Firefox 18.4%
Activity Monitor 0.9%
Firefox Plugin 0.2%
This is all the information I have. By the way, I am using iMac with OS 10.6.

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My IPad 2, IPhone 3GS ans iPod no longer work with apple TV, I have 2 apple TV in my house and for he last 3 weeks the iPod was the only one we could use for appleTV now none of them works, the apple TV icon does not show up any more. Re-started everything.

Ok thank you so much, for your timely response.
RESPONSES:
1)   When I set up my iMac, I did not transfer any data directly from my windows PC. I simply used the same iTunes login and account. I have access to all of the files via the "Purchased" section of the iTunes store. If I click "Download Previous Purchases" text, I can download ALL of the purchases I have ever made.
2)   I have the Apple TV 2, so good news, question answered. I thought maybe it was the Apple TV 1, but it is the Black model, so bam. Good response for you. Well the whole damned reply is an awesome response, just pointing out that one piece of awesome. I stated that it was an Apple TV 2, and yet you were still good enough to figure I could be mistaken, and provide me with knowleedge just incase.
QUESTIONS:
3)   So can my iMac not stream the data directly from itunes, without download? Apple TV can, but perhaps that is something among many things that maker it unique, and awesome.
SERIOUSLY.... THANK YOU...
I work in the computer support section for the Military. The only problem is we use Windows , lol. Well that and i've been gone for nearly 6 months on recover. I go back next month though I hope. But working in that field gives me the abilty to judge responses that run inside the same vein. Your response was so awesome that I half thought I might have written it myself.

Does scheduled startup shutdown use more power

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