Firewire Ports Quit Working

Suggestions please.
Firewire drives that have always booted are no longer recognized at the firewire ports. The drives are confirmed perfect on other computers. It's not a drive issue. Nothing radical changed, just one day it no longer showed up. It's like something just turned off the firewire ports.
Is there anything hardware or OS that could simply shut off the firewire ports, or does this sound like a motherboard issue?
Thanks in advance!

Could be hardware related, but look at these links.
USB and FireWire Quick Assist
http://support.apple.com/kb/HT1151?viewlocale=en_US
What to do if your computer won't recognize a FireWire device
http://docs.info.apple.com/article.html?artnum=88338
Dealing with FireWire problems (drives not mounting, devices unrecognized, etc.)
http://www.macfixit.com/article.php?story=20041221081432908
 Cheers, Tom

Similar Messages

Firewire port previously working now not recognized

Hello,
I understand this particular issue has been discussed at length on this forum and in other places but none of the solutions have yielded any success for me and I see this is often the case for others. So, I'm posting the question again in hopes that there is an Apple guru out there who has figured this one out. (All relevant specs below.)
Problem: Firewire port was working fine for downloading video from a Panasonic PV-GS320 into iMovie 8.0 on an iMac 10.5.8. Then, suddenly the firewire port was no longer recognized:
FireWire Bus:
Warning:          Unable to list FireWire devices.
Maximum Speed:          Up to 800 Mb/sec
The problem cannot be with the camera or cable as I can swap them over to an iBook 10.4 and the camera and firewire download perfectly there.
I have run AHT. Test results show no hardware problems.
I've tried all of these suggestions:
http://docs.info.apple.com/article.html?artnum=88338
http://macperformanceguide.com/blog/2011/20110808_0_Firewire800--howto.html
and quite a number of other solutions that involve rebooting SMC and PRAM but no dice.
I'm guessing this might be some kind of driver or software issue. There's got to be a simple solution to kick this thing in the butt and get it working again. I'd prefer not to do an OS re-install if I can avoid it.
Thanks much! Below are the specs:
iMac: 10.5.8
2.4 GHz Intel Core 2 Duo
4 GB 667 MHz DDR2 SDRAM
Firewire: 800 Mb/sec

Hi Tom,
I've had an opportunity to try all of the options listed on those links. I did omit one however, the Combo Update for 10.5.8. I hesitate to pursue this one b/c from what I can understand this 1GB's worth of update is basically a reinstall of the OS. I'd prefer not to take such a drastic action b/c I'm in the middle of editing a documentary and I don't want any other hardware or software to malfunction or alter behavior while I'm in mid-stream.
Let me know if I'm mistaken about this. As it stands the Combo Update is my last option, otherwise I'm just going to move forward with a dead port.
Just as a sidenote: the behavior of the firewire recognition has changed. Now, the system does not recognize the firewire plugged in at all. I used to get an error message, now nothing.
Thanks Tom and BDAqua.
If anyone else is reading this post I'd like to hear from someone who has experienced the same problem and found a/the solution.
Best Regards,
-J Mann

What is wrong with my 30" Cinema Display? The USB and FireWire ports still work, but the screen is pitch black. When you plug it into the computer, it detects that it's a Cinema Display.

When you plug it into the computer, it detects that it's a Cinema HD but the screen is pitch black.
For some reason, the USB and FireWire ports still work.

If you shine a really bright light directly into the screen can you then see a faint image on the screen? If so, that would indicate the backlight has died (hardware failure) and the unit needs repairing.

All of a sudden usb ports quit working

usb ports quite working. There does not seem to be anything in them. Any ideas.

A reboot is the first logical step.
Try resetting PRAM, it will reset the Serial Port Configuration and Port definition
http://support.apple.com/kb/ht1379

20" Cinema display with USB and firewire ports not working

I have a new 20" display and was wondering why my USB and fire wire ports at the back are not working. I have an external drive that is powered hooked up to the fire wire port and a no powered piano keyboard to a usb port.
Any help please

Verify that the display’s USB and FireWire cables are firmly plugged in to the
computer. Do they show in your profiler?
Try different ports in the computer.
Verify that your computer ports are working with other known problem free device.

Firewire port not working Mac Mini (G4 1.25ghz)

Hi,
The firewire port isn't working on my mac mini, I've tried several devices, but none are connecting. I was wondering if anyone else was having this issue and possibly a solution. The only software installed on the computer since the firewire worked last was Apple updates, so maybe other mini's lost firewire somewhere along the way.
Thanks, and Thanks
W

This worked from Smokerz in the Power Mac G4 forum:
1. Shut-down your Mac, and unplug the power cord
2. Turn the power off on your external FireWire devices
3. Unplug the FireWire devices from the Mac
4. Wait for 5 min.
5. Plug the power cord to your Mac only
6. For PPC Macs: Restart the Mac while holding the Option-Apple-O-F, and keep holding until you get the ">" prompt, then release the keys
7. At the ">" prompt type:
reset-nvram and hit the Return key
set-defaults and hit the Return key
reset-all and hit the Return key
the last command will restart your mac
8. Shut down your Mac
9. Connect all your FireWire devices to the Mac and turn them on
10. Restart your Mac.
Works fine now thanks Smokerz!!!!!
also repaired permission and reset PRAM, nothing worked until I did this.
W

Problem importing video from a DV camera into the new imovie 10.0? I have a Sony DCR TRV17 connected via Firewire port that worked in 9.0.9 but not under 10.0...

I have a Sony DCR TRV17 that I used to pass through VCR tape video via Firewire port to my Mac Pro under Imovie 9.0.9 without an issue. Now under Imovie 10.0 the video shows in the import window, I can start recording yet when I stop recording the recorded clips do not show up anywhere. The movie file I'm creating still indicates that I still need to import video. Anyone having similar problems?

Hey Dave,
I had this issue only once before but was lucky enought to find it was a specific event causing the import to freeze. It took me some time to isolate the problem though. I would recommend letting it sit there for some time before you try any troubleshooting. Larger libraries can take long periods of time to update.
This is a good thread for this issue. I would first try removing the iMovie.plist as elikness mentions.
1. Open Finder
2. Click on "Go" in the menu bar.
3. Click on Go To Folder on the dropdown menu.
4. Type "~/Library/Preferences/" in the text field and click Go.
5. Find the com.apple.iMovie(some number).plist file and move it to Trash.
Quit and relaunch iMovie to see if this took care of the issue before attempting the next step. If you're still having an issue then you can try what I needed to do which is isolating the problem event.
1. Open Finder.
2. Go to the Movies folder. You should see iMovie Events here.
If you have a larger event library I'd recommend renaming the iMovie Events folder to say, "iMovie Events COPY". Then create a new empty folder named “iMovie Events”. When you launch iMovie 9.0.9 all events will be missing at this point. Quit iMovie if it is open. Then you can either drag each event from iMovie Events COPY to iMovie Events or you can select and drag several at a time. Each time you drag an event folder back into the new iMovie Events folder launch iMovie 9.0.9 to see if you are having the same issue. Wash and repeat until either you have found the problem event or you have imported all events.
If you find the problem event you can reimport the clip from iMovie 9.0.9 by going to File > Import > Movies and navigating to that events iMovie Original Movies folder to find the clip.
Hope this helps!

All the fire wire ports quit working.

Hello to all. As you see I am a newbie on here. Last night I was transferring files from my exteranl FW400 to my other FW800 which are daisy chained together. Ive done this hundreds of times. Last night as I made sure at least one of the files transferred over, I went to bed like I always do. I woke up this morning and had noticed it didnt finish several files because it was no longer seen on my mac.
This has happened before, so I shut down and restarted. Nothing, Then I noticed my other FW800 hard drives where not showing up. I shut down for 10mins, started up and nothing. Went over to check on my firewire bus and it said it can not locate the bus at this time. Nothing is smelling burnt, I looked inside and it looks normal. Please help. This is the first Major issue ive eeeeeeeever had with my macpro.

Here's more......Thought you could use this info about getting FireWire to work!
First, you should always Repair Permissions in Disk Utility before and after any update; I would do that now. If you installed your update with FireWire plugged in, your Mac may not recognize it anymore.
Try resetting your FireWire ports by disconnecting all FW devices, shut down your Mac and unplug it from AC power (wall socket) for 30 minutes. plug it back in and try FW.
If that didn't work, download the combo update from this site (yours may be corrupt), not Software Update, disconnect all firewire + USB devices except keyboard + mouse, Repair Permissions, re-install update, Repair Permissions again + try.
If that still didn't get it Zap the PRAM. While restarting Mac hold down the following key combo Command-Option-P-R. Keep holding those keys down till you hear the second start-up chime, then release.
A bad internal PRAM battery can also cause FireWire to not be recognized, so make sure it's good!
Also, here is Apple doc.#88338 on getting FireWire to work.
Here's another Fw Faq.
DALE

Firewire port not working?

tonight, my DVD burner and my Firewire HD are not being detected. I tried to see if system profiler recoginized my firewire port, but All I got was 'No information found.' what can I do to fix this? I need to access this FW hd because it contains all of my music, photos and critical data! thanks!

it seems weird that it just magically started working!

Firewire ports wont work

My Firewire ports have suddenley stopped working.
I have several firewire peripherals and none of them will work.
Maybe a connection insde?

Thought you could use this info about getting FireWire to work!
First, you should always Repair Permissions in Disk Utility before and after any update; I would do that now. If you installed your update with FireWire plugged in, your Mac may not recognize it anymore.
Try resetting your FireWire ports by disconnecting all FW devices, shut down your Mac and unplug it from AC power (wall socket) for 30 minutes. plug it back in and try FW.
If that did'nt work, download the combo update from this site (yours may be corrupt), not Software Update, disconnect all firewire + USB devices except keyboard + mouse, Repair Permissions, re-install update, Repair Permissions again + try. Yours is the 10.4.5 Combo update. Others reading, download the Combo that applies to your system.
If that still did'nt get it Zap the PRAM. While restarting Mac hold down the following key combo Command-Option-P-R. Keep holding those keys down till you hear the second start-up chime, then release.
For those of you with Macs that are not PowerBooks or iBooks, a bad internal battery can cause FireWire to not be recognized, so make sure it's good!
Good Luck!
Cheers!
DALE

New 2011 MacBook Pro Firewire Port Not Working with Focurite Saffire 24 DSP

The firewire port powers the Saffire 24 alone, and the device shows up in the system profiler, but I can't see it in the Sound devices menu... I have updated all of the Focusrite drivers to version 2.2 so I need to ask this board for solutions.

i am having the same exact problem. However, I've never had a Focusrite Driver installed previously. I just bought the Interface and installed the software. It downloaded the newest version of the software to install.
If it also installed the previous drivers, how would I unistall those?

Front I/O Ports quit working

I have a HP Pavilion Elite m9040n Desktop PC. The front I/O ports (specifically USB port, 15 Memory card reader ports) stops working. After reboot, it starts working again. No problem with the back USB ports. Please advise how to fix this issue.

I have just posted on the boards a similar problem so I will respond out of experience only...
My card reader wont recognize memory cards after rebooting...support tech has three times instructed me to shut down, unplug all cables, wait till all power is drained ( about 30 seconds..) then reinstall all cables..restart. This works to get my card reader working. Very inconvienient, tech support has so far told me there is no solution to the problem. ( they also couldnt figure out what the pop up telling me that I could speed up this device, my printer,..means by a high speed port..this shows everytime I use my printer..) I have checked all wires, ( I do all my own hardware installs and swaps..) nothing shows in device manager as a problem or alert...They advised to upgrade my BIOS, this didnt fix the problem. So far, if I wish to use my reader after restart, I need to disconnect my cables after shut down and replug everything, then start it up. No answers from tech support in the near future I fear.

Firewire Port not working, URGENT help please¡¡¡

Hello People, i´ve just got a new Mac Mini last week, and i´ve been trying to get my Alesis MasterControl audio interface, and is just a complete mess.
This happened right after i´ve upgraded to 10.8.3 so i don´t know, the weird thing is that if i connect my old iBook to the Mac Mini the FW800 port works, but everytime i connect the audio interface, nothing happens, also the drivers from alesis, are up to date. i first thought about the port of the Mixer went bad, but it has 2 and non of them works, also thought about the cable but the same cable works when i connect my iBook, and the mixer is not bus powered, it has it´s own power supply.
Needless to say i´ve already done the usual reset PRAM, turn of the Mac unplugged for 30 hour to reset the bus. etc.
This is the usual firewire only system log that i get:
31/03/13 08:01:20.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 003ee1fffe88dc6a; max speed s800.
31/03/13 08:01:30.000 kernel[0]: Alesis Firewire - 3.5.6.11675 (x86_64) Aug 16 2011 01:20:23
31/03/13 11:33:23.529 system_profiler[528]: SPFWR ERROR: FireWire bus may be unstable. Other FireWire devices may be present.
31/03/13 11:35:43.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 11:38:55.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 11:42:08.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 11:44:39.124 CleanMyMacHelperTool[583]: Mounted devices (
    "/Volumes/AlesisFirewire-3.5.3.8671"
31/03/13 11:44:39.146 CleanMyMacHelperTool[583]: Wont clean /Volumes/AlesisFirewire-3.5.3.8671 because disk image
31/03/13 11:44:39.148 CleanMyMacHelperTool[583]: Mounted devices (
    "/Volumes/AlesisFirewire-3.5.3.8671"
31/03/13 11:44:39.149 CleanMyMacHelperTool[583]: Wont clean /Volumes/AlesisFirewire-3.5.3.8671 because disk image
31/03/13 11:44:52.727 coreservicesd[62]: Application App:"AlesisFirewireUninstaller" [ 0x0/0x7f07f] @ 0x0x7fb5c8c30050 tried to be brought forward, but isn't in fPermittedFrontASNs ( ( ASN:0x0-0x80080:) ), so denying.
31/03/13 11:44:52.727 WindowServer[85]: [cps/setfront] Failed setting the front application to AlesisFirewireUninstaller, psn 0x0-0x7f07f, securitySessionID=0x186a5, err=-13066
31/03/13 11:47:28.533 CleanMyMacHelperTool[656]: Mounted devices (
    "/Volumes/AlesisFirewire-3.5.3.8671",
    "/Volumes/AlesisFirewire-3.5.6.11675"
31/03/13 11:47:28.544 CleanMyMacHelperTool[656]: Mounted devices (
    "/Volumes/AlesisFirewire-3.5.3.8671",
    "/Volumes/AlesisFirewire-3.5.6.11675"
31/03/13 11:49:26.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 11:52:39.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 11:57:22.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 003ee1fffe88dc6a; max speed s800.
31/03/13 11:57:34.000 kernel[0]: Alesis Firewire - 3.5.3.8671 preliminary - x86_64 CJ - May 3 2010 02:43:28
31/03/13 11:58:36.982 com.apple.launchd.peruser.501[155]: ([0x0-0x1d01d].tc.tctechnologies.AlesisFirewire.controlpanel[238]) Job appears to have crashed: Abort trap: 6
31/03/13 11:58:37.252 ReportCrash[242]: Saved crash report for AlesisFirewire Control Panel[238] version 3.5.3 (3.5.3.8671) to /Users/m1kygarcia/Library/Logs/DiagnosticReports/AlesisFirewire Control Panel_2013-03-31-115837_Mac-mini-de-Miguel.crash
31/03/13 11:58:39.831 system_profiler[267]: SPFWR ERROR: FireWire bus may be unstable. Other FireWire devices may be present.
31/03/13 11:58:50.676 com.apple.launchd.peruser.501[155]: ([0x0-0x23023].tc.tctechnologies.AlesisFirewire.controlpanel[274]) Job appears to have crashed: Abort trap: 6
31/03/13 11:58:50.837 ReportCrash[242]: Saved crash report for AlesisFirewire Control Panel[274] version 3.5.3 (3.5.3.8671) to /Users/m1kygarcia/Library/Logs/DiagnosticReports/AlesisFirewire Control Panel_2013-03-31-115850_Mac-mini-de-Miguel.crash
31/03/13 11:58:53.638 system_profiler[277]: SPFWR ERROR: FireWire bus may be unstable. Other FireWire devices may be present.
31/03/13 11:59:09.747 CleanMyMacHelperTool[300]: Mounted devices (
    "/Volumes/AlesisFirewire-3.5.6.11675"
31/03/13 11:59:09.905 CleanMyMacHelperTool[300]: Wont clean /Volumes/AlesisFirewire-3.5.6.11675 because disk image
31/03/13 11:59:09.906 CleanMyMacHelperTool[300]: Mounted devices (
    "/Volumes/AlesisFirewire-3.5.6.11675"
31/03/13 11:59:09.907 CleanMyMacHelperTool[300]: Wont clean /Volumes/AlesisFirewire-3.5.6.11675 because disk image
31/03/13 12:00:47.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 003ee1fffe88dc6a; max speed s800.
31/03/13 12:00:59.000 kernel[0]: Alesis Firewire - 3.5.6.11675 (x86_64) Aug 16 2011 01:20:23
31/03/13 12:01:56.720 system_profiler[269]: SPFWR ERROR: FireWire bus may be unstable. Other FireWire devices may be present.
31/03/13 12:05:40.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 12:08:52.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 12:12:42.277 AlesisFirewire Control Panel[245]: -_continuousScroll is deprecated for NSScrollWheel. Please use -hasPreciseScrollingDeltas.
31/03/13 12:12:42.277 AlesisFirewire Control Panel[245]: -deviceDeltaX is deprecated for NSScrollWheel. Please use -scrollingDeltaX.
31/03/13 12:12:42.278 AlesisFirewire Control Panel[245]: -deviceDeltaY is deprecated for NSScrollWheel. Please use -scrollingDeltaY.
31/03/13 12:13:53.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 12:25:29.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 003ee1fffe88dc6a; max speed s800.
31/03/13 12:25:38.000 kernel[0]: Alesis Firewire - 3.5.6.11675 (x86_64) Aug 16 2011 01:20:23
31/03/13 12:28:30.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 12:28:33.906 system_profiler[273]: SPFWR ERROR: FireWire bus may be unstable. Other FireWire devices may be present.
31/03/13 12:31:41.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 12:35:16.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 003ee1fffe88dc6a; max speed s800.
31/03/13 12:35:26.000 kernel[0]: Alesis Firewire - 3.5.6.11675 (x86_64) Aug 16 2011 01:20:23
31/03/13 12:37:53.513 system_profiler[266]: SPFWR ERROR: FireWire bus may be unstable. Other FireWire devices may be present.
31/03/13 12:39:36.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 003ee1fffe88dc6a; max speed s800.
31/03/13 12:39:49.000 kernel[0]: Alesis Firewire - 3.5.6.11675 (x86_64) Aug 16 2011 01:20:23
31/03/13 12:42:55.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: 53 bus resets in last 3 minutes.
31/03/13 12:46:50.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: 68 bus resets in last 3 minutes.
31/03/13 13:01:30.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 003ee1fffe88dc6a; max speed s800.
31/03/13 13:01:41.000 kernel[0]: Alesis Firewire - 3.5.6.11675 (x86_64) Aug 16 2011 01:20:23
31/03/13 13:05:27.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: 79 bus resets in last 3 minutes.
31/03/13 13:06:31.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 13:09:43.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 13:13:31.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 003ee1fffe88dc6a; max speed s800.
31/03/13 13:13:45.006 com.apple.kextd[11]: Can't load /System/Library/Extensions/IOFireWireIP.kext - ineligible during safe boot.
31/03/13 13:13:45.008 com.apple.kextd[11]: Load com.apple.iokit.IOFireWireIP failed; removing personalities from kernel.
31/03/13 13:13:54.818 com.apple.kextd[11]: Can't load /System/Library/Extensions/AlesisFirewire.kext - ineligible during safe boot.
31/03/13 13:13:54.823 com.apple.kextd[11]: Load tc.tctechnologies.driver.AlesisFirewire failed; removing personalities from kernel.
31/03/13 13:13:56.372 com.apple.kextd[11]: Can't load /System/Library/Extensions/AlesisFirewire.kext - ineligible during safe boot.
31/03/13 13:13:56.375 com.apple.kextd[11]: Load tc.tctechnologies.driver.AlesisFirewire failed; removing personalities from kernel.
31/03/13 13:15:40.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 13:18:46.763 com.apple.kextd[11]: Can't load /System/Library/Extensions/IOFireWireIP.kext - ineligible during safe boot.
31/03/13 13:18:46.768 com.apple.kextd[11]: Load com.apple.iokit.IOFireWireIP failed; removing personalities from kernel.
31/03/13 13:18:46.797 com.apple.kextd[11]: Can't load /System/Library/Extensions/AlesisFirewire.kext - ineligible during safe boot.
31/03/13 13:18:46.800 com.apple.kextd[11]: Load tc.tctechnologies.driver.AlesisFirewire failed; removing personalities from kernel.
31/03/13 13:18:50.775 system_profiler[221]: SPFWR ERROR: FireWire bus may be unstable. Other FireWire devices may be present.
31/03/13 13:18:52.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 13:21:03.488 system_profiler[235]: SPFWR ERROR: FireWire bus may be unstable. Other FireWire devices may be present.
31/03/13 13:22:37.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 13:24:07.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 003ee1fffe88dc6a; max speed s800.
31/03/13 13:24:19.000 kernel[0]: Alesis Firewire - 3.5.6.11675 (x86_64) Aug 16 2011 01:20:23
31/03/13 13:31:00.926 system_profiler[316]: SPFWR ERROR: FireWire bus may be unstable. Other FireWire devices may be present.
31/03/13 13:33:03.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: 134 bus resets in last 3 minutes.
31/03/13 13:35:11.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 13:38:24.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 13:41:36.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 13:44:48.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 13:58:13.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
31/03/13 14:01:25.000 kernel[0]: FireWire (OHCI) TI ID 823f built-in: no valid selfIDs for more than 3 minutes after bus reset.
Can somebody help, please i´d gladly appreciate it.

I have this
System Profiler[170]
SPFWR ERROR: FireWire bus may be unstable. Other FireWire devices may be present.
& this
kernel FireWire (OHCI) Lucent ID 5901 built-in: no valid selfIDs for more than 3 minutes after bus reset.
Pls, help!!

IMac FireWire Port Not Working

Hi guys, my system is a 24" 2.8GHz Intel-based iMac. Whenever I plug a device into the FireWire 400 port it powers the device but the iMac doesn't see the device - it doesn't show up in Disk Utility. There are no problems with the devices as they work perfectly with my other Macs. Any idea on whether I can fix this without taking it to an Apple Store? It seems like a Firmware issue.

Hi DrRGrant
First reset the SMC > http://support.apple.com/kb/HT3964
+1. Shut down the computer.+
+2. Unplug the computer's power cord.+
+3. Press and hold the power button for 5 seconds.+
+4. Release the power button.+
+5. Attach the computers power cable.+
+6. Press the power button to turn on the computer.+
Then if that doesn't work, give this a go: > http://support.apple.com/kb/HT1317
+1. Shut down the computer.+
+2. Disconnect all devices and all other cables, except the keyboard and mouse cable(s).+
+3. Disconnect the computer from the power outlet and wait for 3 to 5 minutes.+
+4. Plug the computer back in and turn it on.+
+5. Reconnect the device(s) (one at a time if there is more than one) and test. Test with each port if you have more than one.+
Dennis

Firewire ports not working.

Hello I am new to Apple, i recently purchased an Imac ( 10.6.4 ) and a firewire solo audio interface, the interface isn't being recognised and i've tried all the recommended solutions but none have worked.
I recently found out about "hot plugging" and I think its possible i may have been too eager and plugged my interface in before the computer had completely shut down. The interface receives power from the mac still but it isn't recognised.
So far i've tried, installing newest sofware, reinstalling, verifying disk/disk permissions. Turning of the mac, unplugging for 10 minutes etc.
If anyone has suggestions as to ways of knowing if the port is actually damaged and if so if apple can replace my mac etc. (I'm within the 90 days purchase).
Any help or information would be much appreciated

Ugh... I am having exactly the same symptom on what is probably exactly the same machine.
The laptop recognizes the drive and deals with it.
The imac did so at first, but a couple of days ago it began to have trouble mounting it.
"About This Mac" sees it (sometimes even identifies its Oxford chipset) but no more progress. Disk Utility sees it sometimes, but no success mounting it either.
And just for kicks (you might want to try this too) I tried to boot the imac in firewire mode with the live laptop and although the system hard drive showed up in the laptop's Finder, Disk Utility could not begin to verify the drive before things got ugly. After that attempt the drive would not dismount properly and I had to--gasp--turn it off without doing so. Fortunately the imac booted up without a hitch.
Firewire, firewire...
mac Mac OS X (10.4.5)

Firewire Ports Quit Working

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