Mac pro will not reconize external speakers. quit working for no reason
mac pro does not reconize external speakers. quit working for no reason
Try an smc reset.
Check Audio MIDI Setup (in Utilities).
Similar Messages
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MacBook Pro will not detect external speakers, even though it did yesterday
I have a MacBook Pro and it is connected to my HDTV via an HDMI cable and adapter. Yesterday my laptop was able to detect the external speakers in the TV and sound was coming out of my tv from my mac. But today my mac isn't detecting the external speakers and no sound is coming out of my tv. I've tried turning things on and off in multiple ways. Unplugging and replugging the HDMI cable/ adapter. Both of the cables are plugged in properly. Whenever I go to System Preferences>Sound>Output my external speakers aren't showing up. This is so annoying, help me please! Thanks.
I had this problem, too for my 2014 MBP. The output speakers did not show up when I tried to connect through the HDMI port. However, the output speakers did show up when I used an HDMI to Thunderbolt cable.
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16 mo young Mac Pro will not turn on. Dead. Why. No problems ever! Installed Yosemite and did not boot up after. Did that kill it? To young to die. What happened?what do I do now??????? Help!
Note that you don't have a Mac Pro as stated. Your profile says you have a MacBook Pro. Please clarify as they are entirely different computers. If nothing below works for you, then make a Genius Appointment and take it in for service.
Try these in order testing your system after each to see if it's back to normal:
1. a. Resetting your Mac's PRAM and NVRAM
b. Intel-based Macs: Resetting the System Management Controller (SMC)
2. Restart the computer in Safe Mode, then restart again, normally. If this doesn't help, then:
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the
COMMAND and R keys until the Utilities menu screen appears. Alternatively, restart the
computer and after the chime press and hold down the OPTION key until the boot manager
screen appears. Select the Recovery HD and click on the downward pointing arrow button.
3. Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the Utilities menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.
4. Reinstall Yosemite: Reboot from the Recovery HD. Select Reinstall OS X from the Utilities menu, and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless. -
Mac Pro will not restart after installation of Lion. Help!
Mac Pro will not restart after installation of Lion. Help
Reinstalling Lion Without the Installer
Boot to the Recovery HD: Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alterhatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion and click on the Continue button.
Note: You can also re-download the Lion installer by opening the App Store application. Hold down the OPTION key and click on the Purchases icon in the toolbar. You should now see an active Install button to the right of your Lion purchase entry. There are situations in which this will not work. For example, if you are already booted into the Lion you originally purchased with your Apple ID or if an instance of the Lion installer is located anywhere on your computer. -
2009 Mac Pro will not boot up under Windows
I have an Early 2009 Mac Pro system (Mac Pro 4,1) and I've had this system for 3 years already and have been working under OS X with this system ever since I purchased it.
However, when I tried to boot off my Windows disk, something very interesting happens. The Mac Pro WILL NOT boot up off the Windows disk or a known working Windows partition if two monitors are connected. Upon holding down the option key and selecting the Windows partition, I will get a black screen on one monitor (the one connected via Mini Displayport) and the other screen receives no signal and will enter standby and the system is halted. It does not respond to keystrokes, there is no hard drive activity, no measured power increase on the UPS, no apparent network activity, nothing. The only way to exit this scenario (from what I can tell) is to power off the machine, disconnect the display on DVI, power on the machine again, select the Windows partition wait for the system to reach the login window and reconnect the DVI monitor (at which time Windows recognizes it immediately and the system works fine again).
My question to the community is, does anybody know why this is happening and is there a known fix for this? Quite frankly, having to disconnect a monitor just to restart is very tedious and frustrating.
I have two Samsung P2350 monitors attached to an ATI Radeon HD 4870 (512MB, from Apple). One is monitor is connected via directly DVI and the other is using a Mini Displayport to DVI adapter. Both monitors work fine under OS X with no issue. At first, I thought that this may be a driver issue on the Windows side and after installing all the latest updates and drivers the issue is still apparent. From what I can tell, this doesn't seem like a software issue but rather a firmware or EFI issue as this happens before Windows even loads.
If anyone knows of a fix or what to do in this situation, or if you are also having this issue, I would love to hear your input!
Thank you!
For the record, I am running all the latest software builds on the OS X side (10.7.4, not that it would really matter at this point). I have also disconnected all unnecessary equipment in a trial and error scenario but the results are still the same.
The system passes all ASD testing.
The full specification of the computer and all connected equipment are as follows:
2009 Mac Pro (4,1) 8-Core
2x Intel Xeon Nehalem 2.66GHz Quad-Core CPUs
16GB DDR3 ECC 1066MHz RAM (Apple Branded)
Two OWC 120GB SSDs (One for OS X, the other for Windows 7 x64) - These are in place of my optical drives.
4x 2TB WD Black Hard drives for storage.
Two Samsung P2350 Monitors connected via DVI. (One using a Mini Displayport to DVI adapter).In Windows I am using the latest (12.4) Catalyst Software Suite, 64 bit of course, downloaded directly from AMD's site after installing the drivers from Boot Camp.
As for installing Windows I used an original (not burned) installation media (Disk is in a pristine condition). And yes, Windows is fine, the problem just seems to be getting the system to boot up Windows with that second monitor. However if the "problem monitor" is disconnected the system boots fine 100% of the time and connecting it later after booting the system will still operate properly.
For the sake of arguement I swapped monitor cables and connected the "second" monitor to the mini displayport adapter to verify that it wasn't a cabling issue and I'm still yielding the same issues.
As for GPU testing, I've played games (Crysis, Grand Theft Auto IV, Battlefield 3, etc.) and I've had no issues with the card or stability.
You would think that Apple would try to find a fix for this, especially considering the caliber of this machine. -
As the subject line says, my "early 2008" Mac Pro will not shut down. I have let it set overnight and it will not shut down or restart. I also installed an update which required a restart, selected to restart and the computer would not. Also, whenever I boot up, the computer hangs and will not load the finder. I have to do a "hard" restart and after a couple tries it eventually works...should I just call Apple?
Forced shutdowns tend to cause more directory errors.
How many drives?
Any green version?
Did you disable "allow disks to spindown"?
Possible it is an external USB printer or device, or cable?
I'd boot from another hard drive and do system repair and maintenance.
Create another boot volume if need be.
Startup with using Disk utility but also Disk Warrior.
And when it is working, make backups with CCC or SuperDuper.
Lacking that, boot from OS X DVD and go to Utility menu and access Disk Utility. -
Mac pro will not restart.
When I try to update software my mac pro will not restart. So the software does not update. What to do? I have tried unpluging all external drives. No luck. The screen just stays in the infinity picture. I have tried waiting 5 minutes. Still no restart.
You are still using 10.6.8, just to confirm, so you don't have Recovery Mode for one thing. But do you have a backup that is bootable? make one now before you do more. And try repairing the drive as well as doing a Safe Boot.
You may need to do a clean install to another drive. Apparently you have another Mac or something to post and get online so you could also use Target Disk Mode to access the system in trouble.
Update with what from what? what other internal drives are there?
Clone
How to clone your system:
http://macperformanceguide.com/Mac-HowToClone.html
http://www.macupdate.com/app/mac/7032/carbon-copy-cloner
Using Cloning as a Backup Strategy
http://www.bombich.com/
Create an OS X Lion Install disc
OS X Lion Install to Different Drive
How to create an OS X Lion installation disc MacFixIt
Migration Assistant Update for Mac OS X Snow Leopard
http://www.apple.com/support/lion/installrecovery/
http://reviews.cnet.com/8301-13727_7-20080989-263/how-to-create-an-os-x-lion-ins tallation-disc
http://www.coolestguyplanettech.com/how-to-make-a-bootable-osx-10-8-mountain-lio n-disc-or-drive-from-the-downloaded-mountain-lion-app/
General Mac maintenance: Tips to keep your Mac in top form
General purpose Mac troubleshooting guide: Isolating issues in Mac OS X
Creating a temporary account to isolate user-specific problems: Isolating an issue by using another user account
To resolve startup issues and perform disk maintenance, use Disk Utility.
Safe Mode or "Safe Boot" is a troubleshooting mode that bypasses all third party system extensions and loads only required system components. Read about it: Starting up in Safe Mode -
Mac Pro will not restart from dropdown menu
Hi all,
My Mac Pro will not restart from the dropdown menu or when clicking the 'restart computer' when installing software updates. I have an external firewire hard drive hooked up as part of my backup process. It contains a clone of my startup disk.
I have tried disconnecting the firewire drive, rebooting then attempting to restart from the dropdown menu. Still no joy. I always have to end up shutting down manually by holding the power button in and then restarting with the power button.
Any thoughts?
Thanks in advance.
DennisYou might try Safe Mode (It will take more time to startup in Safe Mode because it runs a directory check.)
If your Shutdown functions correctly that way, go to System Preferences >> Accounts >> Login Items, and remove them. Boot normally and test. If not go to ~(yourHome)/Library/Contextual Menu Items and move whatever is there to the desktop. Then do the same with /Library/Contextual Menu Items. Lastly, try moving ~(yourHome)/Library/Fonts to your desktop and restarting.
Log out/in or restart, if that sorts it start putting items back one at a time until you find the culprit.
EDIT: Also, if you can launch Activity Monitor in your Utilities folder and see if you can find the process that is still running.
-mj
Message was edited by: macjack -
My Macbook pro will not recognize external devices
My MacBook Pro will not recongize external devices such as hard drives
I know that is of no help, but I have the same problem with a Toshiba harddrive. My wifes Macbook Air recognizes it. No problem with the hd I guess. But my macbook pro won't show it in the Finder, About this mac or disk utility - even though it is running. I would also be glad to get a solution to this.
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Mac Pro will not find boot volume
Hello,
My Mac Pro will not find it's boot volume. Each time the computer is started, the blinking folder with the question mark is the result. A working install of 10.7 does exist on the machine's primary hard drive. If I were to press the option key on boot, I can select the primary hard drive (after entering the password) and everything boots as normal. I have run TechToolPro on the volume with no detected errors, even after a volume rebuild. A Recovery HD partition is not on the boot volume. Should that matter?
I really really do not want to reinstall Mac OS X. I have hundreds of gigabytes of data in question. Any reinstall/reconfig would take days to complete.
ThanksSo you are saying that setting the default in Startup Disk doesn't work?
And you have not got or been using Carbon Copy Cloner or another to provide working bootable backup?
You should have Lion Recovery on one of your drives, do a clean install.,
I assume TTPro media scan turns up no errors.
MOVE all your data OFF the boot drive. Keep the system OS and apps on its own drive.
Clone the system. Use TimeMachine and cloning for backup.
And how is the pram battery?
Any time you zap pram you lose the default and it will look for it like you see starting with SATA0 (bay 1) -
My new Mac Pro will not recognize my old Canon video camera
My new Mac Pro will not recognize my old Canon video camera
We've used the 400 to 800 firewire cables with limited success in the past...dropped frames was the main problem. Only used them until the Sonnet FireWire PCIe Card came in to allow a 400 firewire.
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My Mac Pro will not go to Sleep
My Mac Pro will not go to Sleep.
I have it set to 15 Mins in Energy Saver.
After 15 mins no sleep.Alot of people have had the same problem including me. Here's a link to the thread reguarding this particular issue http://discussions.apple.com/thread.jspa?threadID=1847877&start=0&tstart=0.
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HT201364 My Mac Pro will not upgrade past 10.7.5 Now what?
My Mac Pro will not upgrade past 10.7.5 Now what?
No, it is not possible. I have an early model, too, that now sits in a corner. I replaced it at the time with a mid-2011 iMac. The only less expensive route than a new computer is a used/refurbished model, but were you to go that route stick to a 2009 or later model MP.
Surely your business can afford £2500 for a necessary asset. It's depreciable for tax purposes if your tax system allows that. Just ask yourself how much it would cost your business if you did not have a computer. And, consider, if you really need to get a new computer assuming the one you have is still working. Keep it and start putting away enough from your business revenue to buy a new computer later. It's a required part of business planning. -
HT1444 mac pro will not successfully load snow leopard
mac pro will not successfully load snow leopard 10.6 ? presently using 10.5
Haha! That's true. Though I've noted many users here calling a Power Mac a Mac Pro and visa versa.
When my Power Mac died and I brought it into the Apple Store to have them look at it, the first Mac Pros hadn't been out that long. Even the staff didn't know the tower Mac they had out on display was a Mac Pro. I pointed out that it had two optical drive bays in front. Only the Mac Pros have two. All Power Macs have only one. -
My Mac Pro will not power on. I've replaced the power supply, still will not power on.
Is there anyone with a solution?Try a pram reset:
http://support.apple.com/kb/HT1379
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