Firewire port - does not work

Firewire 800 port does not work on my iMac, mid 2010 version.
If i plug in an external disk with external power it does not work. Sometimes the disk are recognized, but then it says its half the size it really is.
On small disks without external power it works.
I have tried 6 different LaCie disks with firewire 800 - all works on my macbook pro.
I have tried 2 differne western disks with firewire 800 - all works on my macbook pro.
All disks works as they should with USB.
Is it possible to reset the Firewire port?
If so, please send me a LINK. This support pages are **** to find correct answers…

While you can't reset the FW port on it's own you can do a number of different resets including SMC & PRAM resets, you can also restart in Safe Mode which will clear some caches. It's possible one has become corrupt. Try these first and sff i you have any luck. Make sure ALL peripherals except the keyboard and mouse are unplugged when doing the resets. Also it is not a bad idea to do each reset 2-3x to ensure it's worked.
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

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IMac firewire port is not working

iMac firewire port is not working
Hi everybody, Happy New Year.
I am a 72 years old semi-newbie in video editing, because Iedit only 1 or may be 2 movies a year since 2007 and I have only very little computer knowledge.
I received a new 27” iMac as a birthday gift 14 months ago. About 10 months ago, with help, I successfully use the Migration Assistant to transfer some datas from my old power G4 to the iMac including two Final Cut Express projects. I had one project successfully done; burned to DVD and I save it with Print To Video. Last week, I have my second project done, I burned the sequences into DVD but unable to do a Print To Videodue to the iMac is not communicating with my Sony camcorders DCR VX1000, this is the same camcorder I used on the last job which was working a couple of months ago.As a result, I try to switch the Easy Setup with different Format and different Use; I refresh the Canvas window; I did a Mix down; move the Screen Saver to NEVER as well as the Energy Saver set to NEVER SLEEP. I also trashed the preferences (plist) folders; run the Utility repair, I replaced the firewire cable (4 pines – 9 pines 800), but nothing work. Up to this point, I think that there is no signal from the firewire port to the camcorder because I understand when the sequences is ready, the firewire is connected between the computer and the recording camcorder, the Print to Video is activated, then the word DV- IN should be seen on the recording deck screen. This time, I don’tread such words on the recording screen. Therefore, I think there’s no out going signal from the iMac to the recording camcorder and the iMac is not receiving signal from the recording camcorder. At this point, I try to connect my iMac to the power G4 to see if I can do some data transfer. Follow the procedures, I hook up the data transfer cable between the G4 and the iMac, I can the fireswire icon moving on the G4 screen but no indication on the iMac screen (there should be some indications in the source bar), this shows me the iMac did not recognize the G4 which worked on previous data transfer. It looks to me the firewire port on my iMac is dead. What has gone wrong? Could I accidentally disabled the firewire port by some magic keystroke? (i.e. accidentally fat finger some thing to make it stop working? Oh, by the way, during the playing around, went to the Final Cut tool bar, I click the View >Video Out > Digital Cinema Desktop Preview – Main, the result was a black screen and the esc key was my rescuer - LUCKY LUCKY! Are there any other trouble-shooting techniques to apply before bringing to shop? Please help!
Sorry for such a long statement, forgive me for unable to make it shorter. Thank you for your patience. Thanks to all the folks in this board for being so helpful.
p.s.

Not sounding good.
If the system Profiler does not see it then there is a basic communication problem between camera and the Mac.
I'm thinking the Firewire port is the culprit as some 800 ports were faulty.
I'd suggest taking the Mac, cable and camera to your nearest Authorized Apple Service Centre and get them to diagnose the issue. eg. let them try to connect the two devices.
Right (control)click the Sequence icon in the Browser and select Item Properties, do the same for a clip.
You can also post screen shots for the Properties.
Al

USB ports does not work

Hi I have problems with not working USB ports. It used to work. I downloaded actual drivers at msi.com for my gaming notebook GX 60 Destroyer and now my USB ports does not work. What should I do?

What driver have you updated?
Try to do an EC firmware reset by removing the battery and the AC adapter then put the battery back with AC adapter attached.
Same questions like Pegasus asked, does all ports not working? which one exactly? What OS are you using?
Have you done any changes to the system? (for example: self-install OS or changing OS)

My usb port does not work on all user accounts

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Try Resetting the System Management Controller (SMC)

One USB port does not work with external Disk or USB key

Hello,
Back to my iMAC there is 3 USB port. The second one - in the middle - does not work pluging an external Disk, an USB key or an iPOD nano. However it works well connecting a Wacom tablet.
Is there an explanation to this behaviour ?
More the keyboard is plugded on USB port 1 and the mouse on the keyboard. Time to time - especially at reboot - I have to unplugged the mouse and plugged again it in order it works.
In advance thank you for your answers
Regards

Since it does not work for three different devices, I will assume it is not something simple like a faulty USB cable. Since it does work for one device, I will also assume that the port is (at least partially) working.
As a test to narrow down the cause, I would try restarting from your Mac OS X installation disc (insert disc and restart with the C key held down).
At the first Installer screen (after language selection), go up the menu bar. Under Utilities, select to run Disk Utility. Now, connect the USB drive into that center port. Does it appear in the Disk Utility sidebar?
Please post back the result...

Back USB port does not work

I noticed that one USB port(All other ports appear to be working)in the back of my Mac Pro does not work.
Aside from taking my Mac Pro in for a repair, is there any other way to fix this problem?

You can always try resetting PRAM and NVRAM…
http://docs.info.apple.com/article.html?artnum=2238
… and/or the System Management Controller…
http://docs.info.apple.com/article.html?artnum=304123
… otherwise no. You will need to take it in for repair and most likely a logic board replacement.

USB Port does not work W510

Hello all,
I am writing to you hoping that one of you may have an idea what's wrong with my beloved w510.
A few hours ago the usb port (on the back on the right side) where I plugged in my external mouse stopped working.
In the Lenovo part list it is referred to as "usb Sub card yellow".
It just does not recognize a mouse nor any usb stick or external drive. I have already reinstalled the usb controller
but it didn't make any difference. (I think the driver is only for the usb 3 hub on the left side of the notebook)
when I plug in the external drive the lights of the drive start "flashing" same for the usb stick, but they are not recognized as drives..Same for the mouse. The lights go on, but nothing else works.
Probably its all my fault, but I don't know what else I can try! Please excuse my bad English...!
Hoping that somebody might be able to help me...
Paul

I have a reproducible test for this issue on my W510.
1) Plug in a usb mouse into the rear usb port and ensure the mouse is working.
2) Hybernate the system.
3) Resume the system.
4) Confirmed the mouse does not work.
5) Disconnect and attach the mouse to one of the left usb ports and confirm the mouse works.
6) Disconnect and attach to the rear usb port and confirm the mouse does NOT work.
7) Restart the system and confirm the mouse still does NOT work.
8) Shut down the computer (a full shutdown, not standby or hybernate).
9) Power the system back on.
10) Confirm the mouse is now working in the rear port.
I can do these steps over and over with the same results regardless of whether the AC adapter is plugged in or not. It appears that the data connection does not work after the system is resumed from a sleeping state. I have the latest UltraNav driver and utility and the latest power management updates.
Oh, and one more test. Hybernate the system with nothing plugged in, then plug in a mouse into the rear usb port when the system is presently hybernated and then power the system back on. The mouse will not work and rebooting doesn't correct it. Only a full shutdown fixes it.

USB port does not work with a screen

Dear All,
My manager has a MacNook Air 10.8 and he is using a large 27'' Apple screen.
He connects the screen to the MacBook Air with a cable which has 3 connections (USB, power, Tundetoh)
He reported to me, that some time, he connect a mouse or a keabord to the USB, at the back of the screen, the two devise does not work, while it works when the devise are connected to USB port of the MacBook Air.
His Macbook Air software are uptodate.
Does you know how to make working the USB devise connect to the screen?
And what does make those trouble?
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Is there special softwer for thunderbolt to update or install?

Serial break on com port does not work

hello everybody:
i have the following problem:
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Solved!
Go to Solution.

A break will not break the connection, it will just put a 1 to the Tx line for a periode longer than 11baud length (?) or specified time.
A hardware check that the break is send: connect a scope or a DMM to the TX and GND , a 500ms break should be clearly visible even on a 'slow' DMM. (a 10k resistor and two LED antiparrallel or a handy RS232 minitester would do the same job )
Greetings from Germany
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LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'

Have just downloaded iTunes 10.5.2.(11) onto Mac Book Pro and now the earphones port does not work. Any suggestions? Annie H

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My System Preferences>Soundoutput screen does not have the "Use audio port for" field.
Does your MBP have two separate audio ports - one for line-in and one output port? Then you wan't see that selector.
but the port has started to work again....Reason???
Perhaps there was dirt or something in the jack and the contact was bad.
(or you accidentally put the plug into the line-in jack instead into the audio-out; that happened to me once ).
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Firewire port does not always work to import movies from video camera

I've been having issues with my Mac Pro lately, it is an 06 model. Opening up iMovie and starting the import process for video from my Canon camera, the software will not recognize that the camera is connected.
In system profile I do see that the camera is connected via the fire-wire port and shows the correct name, etc.
After a bit of troubleshooting, restarting software, I unplugged the fire-wire connector that is part of the dongle coming from the 23" cinema display and the camera appeared like it should.
System profile indicated that the fire-wire connection from the 23" display was unknown. I do know that I can plug other items into the display and they work fine.
Rebooting the Mac Pro did not have any effect either.
Granted, it is working, but I wish I did not have to unplug the cinema display port each time I want to do this.

The firewire port on the Display does not have enough internal power requirements to support some devices. Try the firewire port on the back of the Mac Pro. If you are using a firewire repeater then don't connect it to the Display firewire port, use the Mac pro.

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We needed a new router that had the dual band connectivity as our previous router stopped working properly when we started using a baby monitor operating on the same 2.4 GHz. The choice was between E3200 and E2500. We chose the E3200 mainly because it also offered a USB port. We were hoping to use that to connect our printer and two external drives (thus bypassing our old desktop that's been working as a server). However, it turns out that the USB port on E3200 does NOT support USB hubs! So, you can ONLY use ONE device - either a printer or one external storage drive. That wasn't really clear at all from the description. I feel like we wasted the extra $50 hoping to get functionality that just isn't there. Can't believe that in this day and age, Cisco thinks we all have only ONE USB device we might want to connect to the network! The router itself is fast enough, but the extra $50 for a USB port that doesn't do much and some speedboost phantom ability is just not worth it.

Just to save time to you all, after numerous attempts to install a USB hub to my E3200,
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My usb port does not work

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What kind of computer are you using? Are you plugging in to an external keyboard or other device or directly into the computer? Does it work if you plug it into a different USB port, preferrably one on the computer?
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Firewire port - does not work

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