Matters involving physical computer components, circuitry and parts, as opposed to matters of software or computer programming

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35 views

Get ambient light sensor value from ioreg

I'm using the ioreg command line tool to try and read sensor information available on my computer (iMac). Particularly, I'd like to read the current value of the ambient light sensor. So far, I have ...
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22 views

Run script when I connect something to the line in port?

I'm connecting my phone to my mac via the line in port to listen to podcasts. I'm using the app LineIn to do this and I was wondering whether there was anyway I could have: My audio input be set to ...
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32 views

MacBook discharging while plugged in under load

I have the latest Retina MacBook Pro MacBookPro11,2 I quite often have the CPU at about 400%-500% usage (e.g. 4-5 cores at 100%) and also do GPU intensive tasks. While this is happening, the battery ...
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41 views

Macbook Air's trackpad on trains

Is there any known issue with using a laptop's trackpad while on a moving train, i.e. is the EM field expected to interfere? I ask because often when I use my Apple Macbook Air 1.1 (Early 2008) ...
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156 views

MacBook Pro 5,1 will only turn on after SMC reset

Resetting the SMC every time the machine is turned off is the only way to turn it back on and when it is on the fans run at max speed etc. etc. (SMC issues). Have tried to swap out HDD and RAM. ...
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51 views

how do I transfer my iOS developer profile to another computer because of hardware failure?

Is it possible to transfer my iOS developer profile to another computer if my hardware failed but the hard disk is ok? Thanks!
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538 views

Where can I look up purchase/activation date for Apple products?

I can't remember exactly when it was I bought my iPhone. I thought that perhaps I could look it up via Apple somehow. I'm aware of the Check Your Service and Support Coverage page, but that's not ...
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156 views

OS X breaks if I apply HFS compression to the whole volume. What do I need to exclude?

OS X breaks if I apply HFS compression to the whole volume. (It won't boot.) What do I need to exclude? I've been able to compress large parts of it, but then I had to restore after I compressed ...
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223 views

Is there any neglible impact on USB read/write speeds using MBR/NTFS vs. GPT/HFS+ in OSX?

I have a 3 TB External Hard-drive, however, it was previously used with a Windows desktop and uses an MBR partition table and the single partition is using NTFS. As a result, I've been using various ...
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313 views

Are Macbook Pro Pre-Unibody Top Case Parts Interchangeable?

I have a question for service engineers here. I wonder if and where I can source top case (with keyboard) from any pre-unibody MBP for my beaten and torn A1150 one (Core Duo original MBP)
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21 views

Can trackpad emitting artifacts be fixed?

My trackpad suddenly stopped working correctly without good and clear reason to. I've left my Macbook Pro Retina 15" Early 2013 with open lid with only cat in the room for less than two minutes, and ...
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21 views

Mavericks GPS Receiver

Can anyone suggest an USB GPS receiver that has support for Mavericks 10.9? It would be nice if it has a replaceable antenna. I'm going to use it for reading data from within an application I'm ...
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37 views

Second monitor randomly turns off and on

I have an iMac running 10.9.2 and sporadically the second monitor turns off then on. It's only off for a second or two. It's an Acer AL2216W. It's connected from display port to DVI.
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90 views

Configuring SSD over-provisioning on Mac OSX

I'm in early investigation stages of adding a SSD drive to my MacPro. Fragmentation problems can lead to serious performance problems on an SSD. There are a couple answers to this problem: TRIM - ...
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24 views

Volume won't turn down on 2009 Macbook Pro 5,5

I just replaced the hard drive, upgraded the memory, and installed Snow Leopard to upgrade to Mavericks. Now, the volume won't turn down, but I know the key is being pressed because the volume level ...
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106 views

Replaced LCD/Digitizer iPhone-4 works but intermittently blacks out frequently

Just replaced the LCD/Digitizer on my iPhone4 the screen works fine. Then, it gets fuzzy after some time and then blacks out. Then I have to lock the screen, then unlock, the picture comes back to ...
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79 views

Buy SSD With OS X 10.9 Pre-Installed?

Is it a reasonable ask to have my local hardware store pre image Mavericks onto the new 2.5 laptop SSD, or does OS X have a bunch of setup configs it has to run? I intend to do the hardware install ...
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163 views

How to find potential issues in damage macbook pro

I spilled a glass of water on my early 2011 15" macbook pro. The good news is that I'm writing this on that computer. After turning the machine off immediately, draining the water, checking for ...
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310 views

iPhone 4S chip overheating after replacing screen

I just bought a used iPhone 4S with cracked screen, and installed a new lcd with gold frame. Just after putting the phone together it starts overheating. I have not installed any apps since recovery ...
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519 views

27" 2009 iMac screen occasionally freezes (mouse still moves) after upgrading RAM and SSD

I have a 2009 iMac that has been working fine (but slowly) until now. I decided to upgrade the hard drive to a 500 GB Intel SSD (MZ-7TD500BW) and put in 16 GB of RAM (PNY Optima PC3-8500). I've ...
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202 views

The audio jack of my iPhone keeps cutting out

When I'm trying to listen to something on my iPhone, the audio keeps cutting out. I've had this problem quite a bit lately and there seems to be a sweet spot where it doesn't cut out. It also means ...
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70 views

What's causing this purple banding on video shot with my iPhone 5?

I shot my first two video with an iPhone 5 last weekend, and both suffered from the same flash of purple banding you can see in this clip: http://www.youtube.com/watch?v=RGLWJKDj1fE I've tried ...
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224 views

Time Capsule internal drive is slow

I have a one-terabyte Time Capsule (third generation, 802.11n) that's served me well since I got it a few years ago (I don't remember exactly when). I use it mostly as the primary router in my home ...
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174 views

DVD drive makes a horrible rattling noise

Whenever there's a disc in the DVD drive in my Mac, it makes a horrible rattling noise. Besides replacing the whole drive, is there anything I can/should do to fix it?
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138 views

Is the sixth-gen iPod classic compatible with recent Sony Dockstations?

I have a 6th-gen iPod classic (the first model classic) with an 80 GB hard drive. I have recently purchased a Sony Dockstation for iPods but I cannot make it work. Every time it connects to the dock, ...
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189 views

Macbook Air backlight occasionally powering off

Started a few months ago, and it's definitely not to do with sleep mode as I've checked but my MBA will drop the backlight then shut the screen off completely. Never had anything spilt on it, seems to ...
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420 views

External accessory framework test hardware

I need to write an app for a client the uses the ExternalAccessory framework to communicate with some hardware, I read in 'External Accessory Programming Exercises' by Norman McEntire that the ...
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369 views

MacBook Pro: Strange crashes

I purchased a new 13" MacBook Pro about a month ago. I'm pretty happy with it for the most part, but I've been having a few issues which I find very worrisome. I'm a computer science student, but my ...
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484 views

Restore 200mb EFI Partition/Write Support for WIN7 HFS+

So I posted earlier about recovoring an HFS+ partition on Windows. I used Testdisk with awesome success. Now I've run into another issue. The biggest issue is that I need to read AND write to my ...
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18 views

Display doesn't turn on on Macbook Pro

I was using Windows with bootcamp and suddenly it restarted, but the display didn't turn on. Everything was on, I could hear the sounds, but the backlight is off, the logo light is off. After some ...
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159 views

iPhone 5s touch screen is extremely buggy after repair

My iPhone 5s fell out of my pocket and smashed the glass. Everything still worked perfectly. The touch screen was just as responsive as ever, and Touch ID worked fine. I had the glass (whole screen ...
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27 views

Replaced Ipod video hard drive and battery, now won't start. Did I accidentally kill the hard drive?

As I said in the title, I've been trying to revive an old 5th gen ipod video. I replaced the hard drive, screen, and battery. At first it wouldn't boot, only giving sad ipod error. Then out of ...
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83 views

How is swap on mid-2013 MacBook Air w/ PCIe SSD?

There appears to be confusing and incomplete information about the PCIe SSDs in mid-2013 MacBook Air 11" and 13" (especially the 128GB models), where a different queue depth may result in different ...
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72 views

Apple hardware diagnostic terminology - what hardware issue does this portend?

After 18 months of ownership, my MacBook Pro Retina (mid-2012) suddenly started behaving very strangely, and then powered itself off several times. Upon reboot, the diagnostic report said the cause ...
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28 views

Do Mac versions (Snow Leopard, Mountain Lion, etc.) have a built-in “framebuffer” in their kernels?

Assuming you try to install Snow Leopard on an x86 board that has no GPU or integrated graphics, but only a, say, CRTC or such, does it have support to plot data on the screen without depending on any ...
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97 views

Proximity sensor stopped working after upgrading to 7.0.6

The proximity sensor stopped working as soon as I updated to the latest version. Now the screen does not switch off when I receive a call !! Tried restoring the phone to factory default and then ...
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61 views

How can I get started with using I2C on a Mac?

I have this Devantech I2C thing. It has Mac drivers but i have hard time to figure it out. Instructions are way too hard for newbie like me. Are there any GUI apps which makes it easier to use I2C in ...
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152 views

Corsair Vengeance 2100 on OS X

I just purchased the Crosair Vengeance 2100 headset to use with Steam on OS X (Mountain Lion) and to use with Skype. I can get the headset to be detected by OS X and set it up as a sound device but ...
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55 views

Will Parallels Desktop harm the hardware of my MBP?

I am running VM, PD in particular, on my MBP. I have encountered several scary things today: machine noise (sounds like "Kah-Kah") occurs while I am in 64-bit Windows 7 in VM. Will the PD actually ...
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60 views

Are the new MacBook Unibody Aluminum Batteries better than the old ones?

Of course a new battery is almost certainly better than an old one. That's not what I'm asking about. I used the same battery in my Mac for five years but it sucked from day one really, only lasted ...
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38 views

W and Q keys don't respond after batteries died?

So I didn't pay attenion to the batter and didn't plugin in my macbook pro and it died. Once I turned it back on I found out the w and Q keys no longer respond. I've had this computer since early ...
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508 views

Is there any downside to buying the Apple TV 3rd generation rather than the 3rd Generation Rev A?

The 3rd generation Apple TV apparently comes in two versions: 3rd generation (A1427, model MD199LL/A) 3rd generation Rev A (A1469, also model MD199LL/A) According to the Apple TV article on ...
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49 views

Which devices support airplay (video)?

I am looking for devices which support receiving airplay video. I'm looking specifically for a TV. But other very small devices which work our of the box would be nice too.
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77 views

Test Z-Wave on OSX

I have an old ZWave stick that I was hoping to get working with my OSX computer. I know for a fact the manufacturer never supported OSX (Intermatic HA22) but I was hoping I could hack away a little ...
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39 views

Powermac G5 showing black screen after failed OSX restore

I was reinstalling OSX from a USB using restore in disk utility. It seemed to be going well so I changed channel and started doing some other stuff. A few minutes later the fans were emulating ...
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59 views

Dark stripes in the bottom right corner

I have weird dark stripes in the bottom right corner of the screen of my Macbook Pro 15' unibody Mid 2010. Please see the picture here. They don't go away, the persist from the time display lights ...
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258 views

Macbook randomly shuts down without on charge (even at ~90% full)

I'm having a real issue with my Macbook (white, late 2009 version, running Lion OS X). It was about since 2 weeks ago or so, my Macbook would just randomly shut down, I lost a couple unsaved files ...
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299 views

Black Screen after installing RAM in MacBook (early 2008)

I've tried installing 2 x 2gb DDR2 PC2-6400 modules into an early 2008 MacBook. After installation the machine booted into a black screen, with no chime. I tried reseating the RAM, same problem. I ...
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241 views

2011 MacBook Pro really slow, after mild keyboard shock

I installed Mountain Lion two days ago with no problems except that my 2011 13" MacBook Pro was a bit slower. Yesterday night there was a little shock on the keyboard at which point the system froze. ...
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529 views

Mountain Lion screen crashes after returning from sleep

During the past 3 days I have experienced the following issue: when returning from sleep, I see an extremely garbled version of my desktop. The only thing that seems to help is a reboot. My first ...