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Looks like someone finally wrote a no-sleep extension that really works. Insomnia (GPL) appears to be a rewrite of the old OS 9 Insomnia extension for OS X. Combined with a couple commands shown on their front page, it provides a quick and easy way to prevent your PowerBook from sleeping with the lid closed.
robg cautions: There is kbase article on Apple's site that explains how to use a PowerBook with the lid closed, so this is apparently an OK thing to do. With that said, I know how hot the left-side of my 12" PowerBook G4's palm rest gets during use, and I know I wouldn't want all that heat going directly towards the LCD. So I'm not likely to use this trick, but it should be safe, based on Apple's kbase article. It basically just lets you used the PowerBook while closed, without requiring the external connections. Still, use at your own risk...
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A kernel extension to disable 'sleep on close'
While some powerbooks can be run with the lid closed, iBooks were not designed to do this and running an iBook with the lid closed poses serious risks!
A kernel extension to disable 'sleep on close'
While some powerbooks can be run with the lid closed, iBooks were not designed to do this and running an iBook with the lid closed poses serious risks!
Also, the free application Sleepless has long had this functionality.
A kernel extension to disable 'sleep on close'
This is fantastic. I usually use dual displays on my powerbook, now I can switch back and forth from one to two displays without having to type in my password.
A kernel extension to disable 'sleep on close'
Oh, quick question. I followed the layout of /System/Library and installed this extension in /Library/Extensions
A kernel extension to disable 'sleep on close'
Yes, it will load automatically every time your Mac boots. The folders in /Library/ work exactly like their counterparts in /System/Library/. The only difference is that you can modifiy the contents of /Library/ but you're not supposed to mess with /System/Library/.
A kernel extension to disable 'sleep on close'
I am almost sure kernel extensions are an exception to this. They will be loaded only if they reside in the /System/ tree. I read something about it a while ago but am unable to find it back.
A kernel extension to disable 'sleep on close'
The kextd man page says only /System/Library/Extensions. The implication in the documentation is that it is OK to put device drivers there - having just checked my Mac, Keyspan seems to think it's OK anyway.
A kernel extension to disable 'sleep on close'
The system/Library/extension location is where you have to install kexts. It's kosher and documented by apple to work that way: "When your KEXT is installed, it will be installed into the Extensions folder, at /System/Library/Extensions under Mac OS X."
Why this one folder violates the System/ conventions, I'm not sure. Probably because the code is loaded into the kernal, so all kexts have to be owned by root (and not writable by anybody else), as a security precaution. Could also be a performance issue, since there is a bootcache, to speed startup, maybe they didn't want the kext's in all of the hierarchies.
A kernel extension to disable 'sleep on close'
Will that mean it will load automatically upon reboot or do I always have to issue the kextload command? Couldn't you answer this question yourself by simply restarting your computer & seeing whether the computer sleeps on close afterwards? peter
A kernel extension to disable 'sleep on close'
I'm not sure what this adds that's different from the built in functionality of the newer Powerbooks. I've been able to use mine with the lid closed from day one, without any additional software. I just plug the monitor into the sleeping powerbook and as soon as I plug in the USB keyboard, the Powerbook wakes up, detects the monitor and I'm ready to go. I suppose if the keyboard was bluetooth, then you might need something like that extension though.
A kernel extension to disable 'sleep on close'
I know how hot the left-side of my 12" PowerBook G4's palm rest gets during use, and I know I wouldn't want all that heat going directly towards the LCD.This is not a problem with my 1.33GHz PowerBook G4. At work, I hook it up to an external mouse, keyboard, and display and run it all day long with the lid closed. No heat issues at all, for nearly a year and counting.
A kernel extension to disable 'sleep on close'
Me too. I run all day every day with the lid closed and it's never been a problem. I also do a lot of compiling and numerically intensive work on my laptop so you can rest assured that this is safe even under heavy CPU loads.
A kernel extension to disable 'sleep on close'
A couple hints/tips:
A kernel extension to disable 'sleep on close'
Sorry, got those script names backwards.
A kernel extension to disable 'sleep on close'
Sorry, could you elaborate on what you meant with "named backwards"? Or could you maybe repost them? Thanks.
A kernel extension to disable 'sleep on close'
He just switched the scripts, so where the header says "Turn Insomnia on" the script to turn it off follows and vice versa
A practical solution for iBooks
In order to prevent iBooks from going to sleep, you can put a small coin (tested with 5 euro cent) about 2cm below the arrow keys (you will notice a magnetic attraction).
not recommended for iBooks
As others have already noted, it is a bad idea to run an iBook with the lid closed unless you enjoy the smell of melted plastic. The iBooks are not designed for this - unlike the PowerBooks.
A kernel extension to disable 'sleep on close'
On the Insomnia's webpage it states:
A kernel extension to disable 'sleep on close'
I believe that only occurs if the power adapter is not plugged in. I'm still trying this.
A kernel extension to disable 'sleep on close'
I just tried this tip with on my new 15" powerbook with my power adapter plugged in and 10.3 still went to after 4 minutes.
A kernel extension to disable 'sleep on close'
Seems to go to sleep after 4 minutes under 10.4.3 as well :(
12-inch runs cooler with lid closed
I was amazed too, but using Marcel Bresink's excellent Temperature Monitor I found that my 12-inch aluminum powerbook (Rev A) actually ran cooler (by about 1.5 deg C, as I recall) with the lid closed than with the lid open and the LCD turned off. Go figure.
I use a Podium Pad that elevates the rear end of the laptop, and things may be different if it is in contact with a surface. Also, I did this testing before downgrading my AppleADM103x.kext to the one from 10.2.8, as described in this hint and the reply by junkiesxl , which may affect the results. Perhaps more understandably, it runs even cooler upside-down (in which case the lid must be closed, obviously). At some point, I may re-wire things and see how it runs when positioned vertically, like a book ...
12-inch runs cooler with lid closed
I recently purchased one of the new (G4, 1.5GHz) 12" Powerbooks to replace my senile (P2, 266MHz) Linux box as my main PC, for work, school, and everything in between. I planned to use it on my desk, with a "real" keyboard, mouse, and monitor, 90% of the time, so I was a bit taken aback when I found out running these things closed was considered unusual around the Apple community.
A kernel extension to disable 'sleep on close'
What about pmset ?? you can do this with pmset from what I read . . . man pmset ;) |
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