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Guess what I'll be banging on about here? You guessed it - all my Mac stuff. Now, I hear you. You're saying that there are plenty of people covering the Mac scene and that another one doing the same thing is just boring.

That's where I'll be different. I'll be sharing the stuff I learn and use. I won't be just rehashing the latest press releases. To be honest, that sort of "me too" reporting isn't fun and doesn't really add a lot of value to the world.

My aim is to add value to your Mac life.

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MacBook Pro 13" Sound and USB Issues

Now that I've had my new 13" MacBook Pro running for a couple of days I've discovered a couple of things and thought they'd be worth sharing.

New sound drivers and output hardware

Many Mac users take the easy way when migrating from one computer to the next. Use an application like Carbon Copy Cloner or SuperDuper to clone your old system to an external hard drive and then either clone that back to your new system or use the Migration Assistant to bring all your user data and applications across. As the transfer to my new MacBook Prowas done for me from the by the crew at the local Apple store I suspect they used the first approach - cloning.

All looked fine until I went to check out the latest edition of the Australian Macworld podcast. At that stage I discovered that I had no sound and that the computer didn't recognise the existence of any sound output devices. Strange, as the MacBook Pro made the customary start-up "bong" when booting up. That made me pretty certain that I didn't have a hardware problem.

After some searching (not surprisingly, there wasn't much help online as the unit is so new) I decided to reinstall the operating system using the "Archive and Install" mode and also using the option that lets me retain all my personal settings and applications.

An hour later and all was well. I now have sound and any settings that I need to find are in a folder called "Previous System".

Power Output from USB and Firewire

I have a bunch of external hard drives in the office at the moment and thought I'd try some out with the 13" MacBook Pro. Well, thus far powered drives seem OK but smaller bus-powered units aren't working. I've tried a couple and they just connect and disconnect. I've tried multiple cables and different drives without success.

I won't name the brands in question yet and I have several other drives to try out but at this stage it seems that external drives that are meant to get their power purely from the USB or Firewire bus are a problem.

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PermalinkPermalinkPosted on 15/06/09 at 09:54:04 am 5 feedbacks

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Comments, Trackbacks, Pingbacks:

Comment from: Alex Kidman [Visitor] Email · http://www.alexkidman.com
I've had that power problem with external drives on other Mac laptops -- not even the newer models. I suspect Apple's engineering on USB is a bit flaky...
PermalinkPermalink 15/06/09 @ 10:00
Comment from: Anthony [Member]
Yeah. I've noticed that before. Darn annoying. I wonder if the power output is under software/firmware control so it an be fixed.
PermalinkPermalink 15/06/09 @ 10:44
Comment from: bitingmidge [Visitor] Email · http://www.bitingmidge.com
Alex my G4PowerBook won't drive a particular brand of drive without a powered USB hub.

That was only annoying because I bought it two weeks ago when I thought I was about to buy a new MacBook without a firewire drive, but I digress - it seems that a couple of manufacturers of USB powered drives push the power parameters a little, although I haven't seen the issue reported with new machines.

Cheers

PermalinkPermalink 17/06/09 @ 20:33
Comment from: cheap computers [Visitor] Email · http://www.pcs4cheap.ca
I've noticed that before. Darn annoying. I wonder if the power output is under software/firmware control so it an be fixed.
PermalinkPermalink 06/11/09 @ 08:10
Comment from: roboknight [Visitor] Email
Well, this post may be a little old, but I'm with Alex Kidman. I suspect Apple USB engineering. I've had problems with my Mac Book Pro USB since day one. There are a few devices that work, but this Aluratek SD card reader that I've had for years seems to randomly eject in the MBP. In the Macbook under Leopard, not so. I suspected a driver issue, and the jury is still out on that, but it does appear that of the 3 USB ports my MBP has, the outermost ones (i.e. one closest to rear and one closest to front) seem to react the poorest to the device (i.e. quickest to randomly eject). The center one seems better, but it fails eventually as well. USB Logger seems to indicate that the device just stops communicating, but I suspect it is because either the hardware is faulty or something with the power management hardware is causing the USB to just shut down. I did try not putting the computer to sleep, which ended in the same results, but it did seem to take longer to occur. This all happens regularly with iPhoto. At any rate, made me look for an expresscard sd card reader. Had similar results with a self powered USB hard drive enclosure, but it didn't fail quite as often (I was able to do some things in iMovie, but finally switched to firewire to finish things)...
PermalinkPermalink 09/02/10 @ 14:48

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