Mac Mini Bluetooth hardware problems ?

I own a Mac Mini Intel Core 2 Duo 1Gb bought last October, an Apple wireless keyboard and an Apple wireless mouse, both I formerly use without any problems with my old Powerbook G4. By now, I used them with my Mac Mini it worked perfectly fine. But since two or three weeks, I’ve got big Bluetooth connection problem. Randomly, after one or two hours of use, both keyboard and mouse loose connection and the Bluetooth symbol change itself into a strange one. I had a look on your site to learn the meaning of it and the symbol is see which is a Bluetooth symbol with a horizontal zebra means that no Bluetooth hardware can be found! Does my Mac Mini built-in Bluetooth card have problems?
Since I haven’t got any wired USB keyboard or mouse I have to reboot my Mac Mini quite roughly. Sometimes one reboot is enough to make the Bluetooth of Mac Mini to work again, sometimes not and I have to wait a little bit more (more than ten minutes). I can see it works again as the Bluetooth symbol is the right one again (the one with the dots).
It is very annoying. And I am a bit sad to have such problems with Apple stuff. Is there something I could do to avoid such a waste of time? Or shall I call Apple Care for fear it should be a hardware problem.
Of course, I use brand new batteries for both of them.
Message was edited by: Christophe Canus

***
My mini is doing it as well. Just started doing 2-3 weeks ago. Logitech Denovo or Apple Bluetooth. Doesn't matter which. Loses it in about an hour or so. Al Keyboards and mice were purchased at about the same time as the core 2 duo mini, ~ last October.
Must power cycle the machine to get it back and it must be paired again. Very annoying. Can't remember if it coincides with an Apple update.
This mini has had the superdrive replaced twice, once within 6 weeks of purchase. Ever since Leopard, it's been close to the best media head. now this...
Sigh.
(What makes it not the best? Frontrow doesn't sort titles correctly [1, 10, 2, 3 - wrong!], doesn't force mount aliases in the movies directory, doesn't put out 1080p without hacking. And I'd so love eyeTV integration with Frontrow. It'd be perfect then.)

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Mac mini has hardware problems and moving to a Ibook

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***
My mini is doing it as well. Just started doing 2-3 weeks ago. Logitech Denovo or Apple Bluetooth. Doesn't matter which. Loses it in about an hour or so. Al Keyboards and mice were purchased at about the same time as the core 2 duo mini, ~ last October.
Must power cycle the machine to get it back and it must be paired again. Very annoying. Can't remember if it coincides with an Apple update.
This mini has had the superdrive replaced twice, once within 6 weeks of purchase. Ever since Leopard, it's been close to the best media head. now this...
Sigh.
(What makes it not the best? Frontrow doesn't sort titles correctly [1, 10, 2, 3 - wrong!], doesn't force mount aliases in the movies directory, doesn't put out 1080p without hacking. And I'd so love eyeTV integration with Frontrow. It'd be perfect then.)

Mac mini, bluetooth connection problems

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https://discussions.apple.com/message/20738621#20738621
2012 Mini Bluetooth/USB3 Interference: Apple Support Communities
http://blog.macsales.com/15990-shielding-resolves-usb-3-0-conflict-with-bluetoot h

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Mac mini server: Hardware test error on Hard Drive
'checking for slow read failures': ERROR - Target device access failure - Test failed.
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Meanwhile we wonder if this is really a hardware error. It all happened during writing a time machine backup.
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BDAqua wrote:
I thnk Intenal 2.5" Drives for servers is silly, & Ithink the Minis & iMacs re poorly cooled.
I'd get Temprature Monitor & see what temps they're running.
Is Temperature Monitor an app or a device? If it's a temperature problem then that is essentially a design problem. Two drive failures in the same Mac mini server in four months combined with the fact that they're not really user serviceable already has me 90% on the way back to more pragmatically designed Linux servers. I think it would be foolish to waste any more money on these minis for my business hosting.

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The issue I'm having is my apple bluetooth devices will not connect to my mac mini. This problem started a few weeks ago and i have narrowed it down to my Airport Extreme which is right next to my Mac Mini. I have tried adjusting the channels and removing the Wide channel option on the Airport Extreme this has helped I can use my magic pad (not really up to par but it works). When I disconnect my Airport all my bluetooth devices work great. Moving my airport extreme isn't an option without a large amount of work putting in a new cable outlet. I don't know what changed from a few weeks ago as the devices have always been within inches of each other and worked fine.
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I'll try to make this short, but it is a looonngg problem.
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I've set up ANOTHER appointment at the Genius bar tomorrow.
My question: can I demand that they replace this machine. Between work and home I have 2 Mac Mini's, a Macbook Pro, a Macbook Air and 2 iPhones. I've never had this type of problem. I'm really tired of this.
I purchased this in February so it is in warranty.
Thanks

rwgleaves wrote:
I took it to the Apple store Genius bar today - my 5th trip - and they did just what I'd hoped. They replaced the Mac Mini with a brand new machine.
This is why I buy Mac/Apple!
Excellent new, sorry you had so much trouble on the way. And yes, Apple Stores are awesome!

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I have done research on the boards,and so far haven't found a solution so i decided to make my own discussion.
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HDMI On Mac Mini Late 2012: Problem with hardware?

Just converted from PC to Mac.
Purchased latest mac mini (Late 2012 version)
Have tried several monitors through HDMI port and each time the picture quality is poor with very bad text resolution.
Have tried HDMI to HDMI and also tried HDMI to DVI adaptor.
This is with full 1080p 27 inch samsung monitor and HP 2010i monitor.
Is there a problem with the HDMI port on this new mac mini?
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Many thanks if you can answer this

OK. So I have now tried LG 27 Inch E2742 Monitor as follows:
1) Mini display to DVI-D : Picture good with decent text resolution
2) HDMI-HDMI: Picture poor with poor colour and text resolution. This is not a calibration issue.
The samsung monitor 27 inch series 3 also has poor picture and colour and text resolution with HDMI-HDMI. Again this is not a calibration issue. It does not have a DVI-D input to test the minidisplay port.
So it seems the HDMI port is not working properly but the minidisplay one is ok as I suspected.
From reading the other threads it seems this is a common problem including those people that have taken their minis back for an exchange and experienced same problem.
Is there likely to be a software update to resolve this?

Mac Mini KVM USB problem prevents boot when using certain USB ports

Hi,
Just purchased a brand new Mac Mini 2.4 Quad Core to use as a server.
This morning we removed from the box & connected it to our NTI Unimux 16-port KVM. The KVM already has 10 Mac Mini's connected (various vintages, no problems).
We connected the Mini to the KVM using HDMI for video and a USB connector.
The Mini initially refused to boot past the initial white/gray screen. It never got to the Apple or the cog.
However, we found that if the USB cable from the KVM is disconnected, the Mac Mini booted immediately.
Further, the Mini will also boot with an Apple keyboard connected.
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b

Hello,
Great work & very interesting thanks!
My guess is mA available & mA required, chect System Teport>Hardware>USB for like this...
USB Bus:
Host Controller Location:    Built In USB
Host Controller Driver:    AppleUSBOHCI
PCI Device ID:    0x0035
PCI Revision ID:    0x0043
PCI Vendor ID:    0x1033
Bus Number:    0x0b
Bluetooth USB Host Controller:
Version:    19.65
Bus Power (mA):    500
Speed:    Up to 12 Mb/sec
Manufacturer:    Apple, Inc.
Product ID:    0x8207
Vendor ID:    0x05ac (Apple Computer, Inc.)
General Purpose USB Hub:
Version:    1.00
Bus Power (mA):    500
Speed:    Up to 12 Mb/sec
Product ID:    0x2077
Vendor ID:    0x0451
802.11 n WLAN:
Version:    1.01
Bus Power (mA):    500
Speed:    Up to 12 Mb/sec
Manufacturer:    Ralink
Product ID:    0x5372
Serial Number:    1.0
Vendor ID:    0x148f
MegeCam:
Version:    1.00
Bus Power (mA):    500
Speed:    Up to 12 Mb/sec
Manufacturer:    MGI
Product ID:    0x8007
Vendor ID:    0x060b

Mac Mini HDMI Output Problem w/ LG L246WP

NOTE: This appears to be unrelated to the "screen flickering" that has been noted previously.
I'm using a fresh new Mac Mini 2012 with an LG L246WP LCD monitor. The monitor has HDMI, VGA and Component video inputs.
When I attach the monitor to the Mini DisplayPort output, using a Mini DisplayPort to DVI adapter connected to a DVI to HDMI cable, the display functions properly at all resolutions - including the native 1920 x 1200 resolution that I use it at normally. All resolutions are clearly displayed in the "Displays" System Preferences pane. The display looks perfect, functions properly.
When I attach the monitor to the HDMI port using an HDMI cable, the display does not fucntion properly. The display is shifted about 80-100 pixels to the left and about 20 pixels up, creating black bars on the bottom and right sides. Because of this, a large portion of the display is not visible including the menu bar and most of the left side. Additionally, the settings are reduced to "Best for Display" or "Scaled", with resolution options under "Scaled".
This is not acceptable. I had planned on simply using the Mini DisplayPort output as a workaround, since I already have the DVI adapter from an old setup, but I need to use Thunderbolt to access external hard drives for rapid data transfer. One of my Thunderbolt accessories does not have two ports, so I can't simply add the Mini DisplayPort adapter to a chain. The HDMI port needs to function properly with my monitor.
It's important to note that this monitor has functioned properly with many other comptuers running OS X, Windows and various Linux flavors and it hasn't ever done this before. I've tried several different HDMI cables, ruling that out as a problem. I've tried the HDMI to DVI adapter that ships with the Mac Mini 2012 along with two different DVI to HDMI adapters, ruling that out as a problem. I tried attaching several HDMI devices (game consoles, DVD players, etc) and they all function properly, ruling out an HDMI issue as a problem. The monitor functions properly when attached through the Mini DisplayPort to DVI adapter, so it's not a problem with the monitor. I've reset the PRAM already and the installation of OS X 10.8.1 is stock with no modifications or migrated data. I've tried the suggestions on the HDMI FAQ (although there's no "underscan" option available in Displays)
I tried to call AppleCare and after describing the problem I got disconnected with no callback. I started another ticket, described the problem, discussed the previous disconnection, was assured that I'd be called back if disconnected, and haven't heard back in two hours. So I started to dig into the problem in earnest.
This gets pretty technical.
After substantial research, it appears that this issue is related to the EDID that the monitor sends to the computer and, crucially, the way that the driver responds to it. For some reason, the HDMI port is recognizing the monitor as a CEA device instead of a monitor. As a result, it's restricting the monitor's available resolution to the native resolution that the CEA 681 Series Extension describes ("Best for Display") and all other resolutions (including 1920 x 1200) are only available as "scaled". For some reason that I can't discern, all resolutions (even the 1080i and 1080p options) have similar deformities.
I've attempted to fix this by placing an appropriate override file in /System/Library/Displays/Overrides with an edied EDID removing the CEA-enable flag from byte 127 but, even after a reboot, the OS still insists that it's a CEA device and it won't allow me to force it to recognize the monitor as a 1920 x 1200 LCD Monitor.
How did I come to this conclusion and develop the fix? A nearly identical problem description showed up on the following website, with details on how this user fixed the issue:
http://byuu.org/articles/computing/edid
They used a convoluted process that involved dismantling the monitor and flashing the EDID on the monitor itself. It fixed their problem. I'd prefer not to go through that process just because one computer has a problem with it. Frankly, I'd prefer if the new Mac Mini performed properly in the first place.
TL;DR: The Mac Mini 2012 doesn't work right with the LG L246WP through the HDMI output. Everything else works fine with it. This is very uncool. It's most likely to be an issue with the driver for the Intel HD Graphics 4000 GPU that are bundled with OS X 10.8.1. The Mac Mini 2012 won't update to 10.8.2 (yet), so I can't test it.
Anyone have any other ideas? Anyone else using a Mac Mini 2012 (or 2011) with an LG L246WP monitor? Anything simple I've missed?

Problem Resolved. But it was complicated. And a huge pain in the rear.
TL;DR: I flashed the EDID as described here. This is not recommended for the weary. Ideally, Apple should release an update OS X that will include the updated Intel HD Graphics 4000 drivers that utilize the CEA flag properly.
Here's the detailed version. As mentioned above, this isn't recommended for the weary. An improper (or interrupted) EDID flash can have seriously unpredictable effects on a monitor's performance.
Step 1: Get a Windows PC set up with a floppy drive and find a floppy disk. Use this system to format the floppy as a MS-DOS Boot Disk and copy over the "ddcw" program described at the aformentioned link.
This took awhile, but I was able to cobble together a temporary frankensystem with parts I had laying around. In installed XP and formatted the disk with XP's format tool.
Step 2: Grab EDID data from the monitor, modify it to disable CEA mode at bit 127 and make sure bit 128, the checksum, is appropriate.
This also took awhile. Several graphics cards I tried could not read or write EDID data. I ended up swapping AGP cards in my frankenstein box until I found one that worked - a generic GeForce4 4200.
Once the EDID data was written to the floppy, I edited the text file containing the EDID data to change the last two hex octets from "01 33" to "00 34" (00, to disable bit 127, and 34 is 33 + 1, which satisfies the checksum) and formatted the text file to match the sample included in the EDID_Write.zip file. Your mileage may vary - make sure the checks.
Step 3: Write EDID data to the monitor.
The link above mentioned three options: Easy (monitor's EDID is unprotected - write away!), Hard (monitor's EDID is protected - use service mode to attempt a fix), and Very Hard (monitor's EDID is protected, hardware modification is required).
Luckily my LG246WP simply needed to be put into service mode as described at the link above (menu + power) and once started up in service mode, I simply enabled "Aging Mode" (whatever that means) and attempted a DDCW write of the updated data.
Step 4: Profit!
After doing this, I powered off the monitor and powered it back on with the Mac Mini attached. The display functions PERFECTLY with HDMI out, just as it does using the Mini DisplayPort to DVI adapter.

Mac Mini Mid 2011 problem getting 2560 resolution

I've been told that Mac Mini 2011 would support 2560 resolution however I cant get it to work.
Here is background story.. i used to run this MacMini on a cheap 26" acer using apple Minidisplay adapter to dvi input to Acer.
I ended up buying two 4K Samsung U28D590D in hopes this would be a plug an play affair as Samsung comes with display port and i can simply run a display port to mini display cable. This ended up being true for my wife's macbook Pro (about 6 months old) connected it and runs 2560 no problem, picture is perfect!
Using the same concept and cable on MacMini does not work at all, monitor does not display any picture. If i use HDMI to HDMI ill get 1920.
I also have an additional monitor "Shimian" that is a DVI-D monitor supporting 2560 which i ran on a PC using Geforce GT 610 and ran 2560 no problem. When using Minidisplay adapter to dvi same problem, it does not work at all. (unless apple sells different adapter minidisplay to DVI or DVI-D?)
i'm trying to figure out if this is a hardware problem on Macmini that does not allow this resolution to be supported?
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Thank you all!!
Model Name:   Mac mini
Model Identifier:       Macmini5,1
Processor Name:        Intel Core i5
Processor Speed:        2.3 GHz
Number of Processors:           1
Total Number of Cores:         2
L2 Cache (per Core): 256 KB
L3 Cache:      3 MB
Memory:        8 GB
Model Name: MacBook Pro
Model Identifier:      MacBookPro11,1
Processor Name:       Intel Core i5
Processor Speed:       2.4 GHz
Number of Processors:          1
Total Number of Cores:        2
L2 Cache (per Core):            256 KB
L3 Cache:      3 MB
Memory:        8 GB

The 2011 Mac Mini supports:
Display Support:
Dual Displays
Resolution Support:
1920x1200*
2nd Display Support:
Dual/Mirroring*
2nd Max. Resolution:
2560x1600*
Details:
*This model simultaneously supports 1920x1200 on an HDMI or a DVI display (using the included HDMI-to-DVI adapter) and2560x1600 on a Thunderbolt or Mini DisplayPort display or even a VGA display (with an optional Mini DisplayPort-to-VGA adapter, which is compatible with the Thunderbolt port).
What resolution (x by y) do you get via Mac Mini> mini displayport>Displayport cable>Monitor?

Mac Mini Bluetooth Issues

Hi there, I've recently took purchase of a new Mac Mini (my first Mac) and am loving it, apart from the problems I'm having with the Bluetooth functionality.
I've been trying to pair my new Apple wifi keyboard and have not been succesful, I can't get the mini to recognise that there is a keyboard (I've also tried pairing 2 different mobile phones, and anther laptop with no success).
I've tried a what was suggested in another thread (powering mac and key off for a few minutes, with power cable/batteries removed) but this hasn't worked for me.
I'm not at a total loss, as you can see by my typing of this Topic , however it would be cool to get the BlueTooth working on this Mini.
Any help or suggestions would be greatfully received
Dan

I am having similar issues. The bluetooth range with the apple wireless mouse and kbd is VERY short. If the mouse is more than a foot or so away, motion becomes clunky. I also tried this with another bluetooth mouse (different brand) and had the same problem. I've gone though making the mouse and kbd favorites, but about half of the reboots, the mouse isn't found (when it's less than 3 feet away).
The computer is completely up to date. I've installed every OS firmware, keyboard update etc available.
Incidentally, I've tried both mouse and keyboard with other computers, and they work perfectly at longer ranges (10ft or so).
I bought this system to be my media center, but if this persists, or I can't find a solution, I'm thinking about bringing it back.
Tony
intel mac mini Mac OS X (10.4.6) Apple BT mouse and keyboard

Mac Mini Bluetooth hardware problems ?

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