Problems with firewire / coreaudio - abnormal cpu usage

(powerbook aluminium..)
I own a Presonus Firebox firewire audio device that makes use of the coreaudio drivers of OSX. As soon as I connect it to the build-in firewire port, kernel_task eats up 15% of my cpu. (when disconnected, kernel_task is at 0,5%) Secondly, ghost spikes appear at regular intervals.
I first thought it had to do with the firebox, but I tested several brands - all using the coreaudio drivers - with the same results. The ghosts spikes appeared too.
Other devices, such as DV cameras, Harddrives etc, work fine. No spikes, nothing. So only devices that make use of coreaudio create problems.
How can I find out if either the drivers are corrupt, the motherboard is faulty, or something else is going bad?
I bought a firewire pccard, but the problem is the same.
I reset pram & hardware, but no difference.
What can I do to fix this?
forgot to mention that the powerbook whines like crazy when the audio device is connected.

Hi, kahara. Try reposting in the Aluminum Powerbook discussions area.

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I would assume that the Maxtor may be SATA. Does it have an eSATA port? Also, there were a lot of threads (in OS X Leopard forum) about those OneTouch units. Same can be said for LaCie problems.
Yes, check for firmware and configuration. In some cases, and what I do with any new OS, is to reformat all drives - gradually. Given the age of the eMac I'd guess firmware is out of date, and that the drives are formatted some time ago. While you don't have to use GUID, it is a good idea eventually, or just reformat a drive.
Don't forget to test your drives with Disk Warrior (4.1) also.
750GB WD Caviar is $139 SATA.
http://eshop.macsales.com/Specials/XLR8YourMac.cfm?Criteria=&sort=&man=Western%2 0Digital
Are you using daisy chains? you have one FW bus shared by front and back ports. Do you have any on FW800 or using FW400 to FW800 adapter cable? PCI Express FW400 card might even help a little.
Never had trouble with OWC enclosures:
http://www.macsales.com/firewire/

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ok here's what I've found about the high cpu...
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After using my computer for some time, CPU usage climbs to about 90% (ca. 65% user / 26% system) and fans run at high speed, but there is no processes that seem to use CPU (other than Activity Monitor itself ~1%).
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Perform a SMU reset.
https://support.apple.com/kb/HT3964
Remove the anti-virus, it's running a root level process all the time that's taking your CPU and it's not necessary as there are no Mac viruses, Apple has the trojan angle covered already.
Always on anti-virus on a Mac is always a source of problems, also is MacKeeper, uninstall that here if you have it.
http://applehelpwriter.com/2011/09/21/how-to-uninstall-mackeeper-malware/
If you need to clean the Windows filth off PC files, then use the free, run as you need, ClamXav.
http://www.clamxav.com/
It seems your machine is used in a corporate enviroment, thus likely a rule that anti-virus must be used, you can avoid high CPU usuage by using the ClamXav instead.

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At this point, even if Adobe shrugged their shoulders and said "yeah, we know about the problem but we have no idea how to fix it" would be better than nothing at all.

I've had the same issue for YEARS now, with flash videos (like on youtube) and games starting out okay, but after a little while, they just start to stutter and slow way down, while the CPU usage goes up to ridiculous levels. The browser doesn't matter, firefox or chrome, online content or run off the local hard drive. I have the latest flash player, and this has been a problem ever since at least version 9. I'm using XP. I think version 8 never had this issue, but unfortunately all recent games and youtube videos won't run with version 8. Adobe did something with recent versions of flash player that causes this issue now. Google search and you'll see countless threads from people with all kinds of computers with all kinds of specs having the exact same issue.
There has never been an entry in the Adobe knowledgebase about it, despite the persistence of this problem.
It's like it's a coverup or something. The more I think about it, the more it reminds me about when the Netscape browser was caught secretly uploading information to their servers and resulting in browser slowdowns. Is flash player doing the same thing? Adobe has already been caught out with spyware-like activities with Photoshop connecting to Omniture through the flash-enabled splash screens that were purposely disguised to look like they were innocently connecting to a user's local system, but in fact connecting to stat and online marketing sites. Is this why this years-old problem has never been addressed in any official way? Now I'm just rambling. I want a fix. It's been years now that I haven't been able to enjoy more than a few minutes worth of flash content.
At this point, even if Adobe shrugged their shoulders and said "yeah, we know about the problem but we have no idea how to fix it" would be better than nothing at all.

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CaptM
From the firewire that feeds the dsr-11. on the output, i use s-video cable to my monitor (sony pvm-14l) and High Quality rca cables thet feed the audio to the Roland Speakers.
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I am experiencing the following problem with my FireWire Audio interface via Edirol FA-66. At unpredictible moments the 'Digital In' LED starts blinking, and after that the audio signal stops working. I do not know if Logic is the culprit, since it also happens now and then with iTunes
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Please, is there anyone with some solution? Is problem with AE or drivers? Thanks.

>My 8800GT is not going to work with AE and it's listed under Adobe's
>supported graphic cards????
That's premature to say. Please understand that in the OpenGL game there are just too many varaibles, a lot of them outside the control of Adobe or any other software vendor for that matter. Please consider the following:
- if tested, a card is usually tested in one configuration available at the time that presumably will be the most common one bought by users. There is room for better sub-versions (more VRAM, higher memory clock), as well as weaker ones (less VRAM, lower clock speed).
- the previous applies to the host computer. Nobody can test the 100 new different motherboards that come out every month let alone all that are already on the market. Same for RAM, processors, other peripherals.
- multiple vendors may produce cards based on the same design, but may use different BIOSes and branding
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- BIOS configuration, motherboard voltage fluctuations, PCI timings and whatnot can vary from user to user and thus have drastically different influence how a certain component behaves.
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So given all of the above, please understand that this is a *******' tough job and by all rights nobody intentionally tries to scam users or something like that. You will also find it hard to blame anyone in legal terms, as you usually agree to use the software "as is" - with all it's flaws. As David says - please try first. We will gladly try to help you sort out any issues and who knows - none of the problems affecting other users may come down on you and you'll be a happy camper after all.
Mylenium

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Hi,
since i have updated my system, i am unable to connect my dv-camcorder to my firewire-card.
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firewire_core: phy config: card 0, new root=ffc1, gap_count=5
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firewire_core: phy config: card 0, new root=ffc1, gap_count=5
firewire_core: phy config: card 0, new root=ffc1, gap_count=5
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I think there is a problem with the new kernel or something. Two weeks ago, before updating my system, everything works well.
Any suggestions or ideas?
Anyone with similar problems?
Greets,
smove
Last edited by smove (2008-05-06 19:32:14)

I solved this problem. Since kernel 2.6.22 there is a new firewire-stack available called 'juju'. Because of it´s experimental state it is not recommend to use it. In the current kernel-package the old and the new firewire-modules are included but the new instable ones are used by default. To fix the problem you have to blacklist the new firewire-modules.
Create the following file:
/etc/modprobe.d/newfw_blacklist:
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            <mx:RadioButton x="92" y="290" label="Media" group="{impacto_group}" id="prioridadMedia" change="{validaPrioridad()}" />
            <mx:RadioButton x="163" y="290" label="Baja" group="{impacto_group}" id="prioridadBaja" change="{validaPrioridad()}"/>
            <mx:Image x="127" y="8" source="images/asterisk_orange.png" toolTip="Campo obligatorio"/>
            <mx:Image x="151" y="64" source="images/asterisk_orange.png" toolTip="Campo obligatorio"/>
            <mx:Image x="137" y="124" source="images/asterisk_orange.png" toolTip="Campo obligatorio"/>
            <mx:Image x="78" y="264" source="images/asterisk_orange.png" toolTip="Campo obligatorio"/>
            <mx:Image x="587" y="412" source="images/asterisk_orange.png" toolTip="Campo obligatorio"/>
            <mx:Image x="612" y="474" source="images/asterisk_orange.png" toolTip="Campo obligatorio"/>
            <mx:Image x="587" y="562" source="images/asterisk_orange.png" toolTip="Campo obligatorio"/>
            <mx:Image x="893" y="477" source="images/asterisk_orange.png" toolTip="Campo obligatorio"/>
            <mx:RadioButtonGroup id="afectaCirc_group" enabled="false" />
            <mx:RadioButtonGroup id="impacto_group" enabled="false" />
            <mx:Button x="185.5" y="357" label="..." width="36.5" toolTip="Asociar incidencia..."/>
            <mx:Image x="89" y="395" source="images/asterisk_orange.png" toolTip="Campo obligatorio"/>
        </mx:Canvas>
    </mx:Canvas>
</mx:TitleWindow>
I have a titleWindow with seven combobox and anything else, like labels, radios, etc.
The second time I open the titleWindow (the first time works fine), my cpu usage increase at least 50% and my browser became so slowly. I must to re-open the browser to work normally.
I have tried to delete all the combobox´s and works perfect.
I open and close the titleWIndow with PopUpManager, so I do not understand why the memory is not dispose.
Is there any solution??
Any idea??
Thanks a lot.

I have used the profiler with the next result:
I do not know about ChildConstraintInfo, but it seems to be the cause of my high cpu use.
Do you know what ChildConstraintInfo is?
What can I solve this high consume?
Thanks in advance for your attention
Fran

Weird Problem with Firewire Drive on 17" MBP

I have an external firewire drive that worked great on my 15" MBP and with any other computer I have never had any problems. The problem occurs when I plug the drive into my 17" MBP with the magsafe connected, it just wont mount, but as soon as I unplug the magsafe the drive mounts. Really weird. Anyone have a similar problem? I am going to the Apple Store and see if I can duplicate the problem.

I'd backup your files if you can. If the drive is failing then the advise you've gotten is good advise. You can try software recovery if you are unable to use the drive:
Basics of File Recovery
Files in Trash
If you simply put files in the Trash you can restore them by opening the Trash (left-click on the Trash icon) and drag the files from the Trash to your Desktop or other desired location. OS X also provides a short-cut to undo the last item moved to the Trash -press COMMAND-Z.
If you empty the Trash the files are gone. If a program does an immediate delete rather than moving files to the Trash, then the files are gone. Recovery is possible but you must not allow any additional writes to the hard drive - shut it down. When files are deleted only the directory entries, not the files themselves, is modified. The space occupied by the files has been returned to the system as available for storage, but the files are still on the drive. Writing to the drive will then eventually overwrite the space once occupied by the deleted files in which case the files are lost permanently. Also if you save a file over an existing file of the same name, then the old file is overwritten and cannot be recovered.
General File Recovery
If you stop using the drive it's possible to recover deleted files that have not been overwritten with recovery software such as Data Rescue II, File Salvage or TechTool Pro. Each of the preceding come on bootable CDs to enable usage without risk of writing more data to the hard drive.
The longer the hard drive remains in use and data are written to it, the greater the risk your deleted files will be overwritten.
Also visit The XLab FAQs and read the FAQ on Data Recovery.
If the above is not possible then sending the drive to a data recovery service may be your only option, and they are very expensive.

Problem with animation and separate CPU intensive thread.

Hi All,
I'm in the process of writing a Java chess game with a computer AI. I've got everything working except for the animation of the computer making its move. Sometimes it works, sometimes it doesnt.
Here's the problem:
After the computer has finished deciding what move to make (CPU intensive - using standard Minimax w/ Alpha Beta pruning), the thread terminates passing the move to the animation thread (implemented using javax.swing.Timer). My delay is set to 50. But the multiple calls to repaint() in the Timer thread all get collapsed into one (they somehow get bunched up) causing a major display glitch!
Sometimes this happens, sometimes it doesnt. I wanted to know if i could write some kind of wait function to wait until the CPU is free to process quick repaint() requests so that my animation can look descent all the time.
Thanks for any help.
jairam at ecf dot utoronto dot ca

In the javax.swing.Timer class is a method called
setCoalesque(boolean) (I think I spelled that wrong, but you will find it)
By default the Timer class does exacltly what you mentioned, it merges multiple events into one when the application is too busy. Call setCoalesque(false) to receive all the events from the Timer.

Audio problem with firewire to thunderbolt adapter

I am running four channels of audio from a Yamaha Motif synthesizer into a new iMac using the firewire to thunderbolt adapter and recording to Logic. I get very loud distortion. I unplug the same cord and remove the adapter and run the same audio into my 2011 MacBook Pro and record the audio with no distortion. I can run MIDI into the iMac using the adapter with no problem. What gives?

The iMac has three USB and three Thunderbolt. The Yamaha has Firewire out which carries 16 channels of audio. It works great with my MacBook Pro, but the Thunderbolt Converter seems to mess it up. It's fru
strating having bought a brand new iMac and not being able to use it to record. Now when I try to record a single channel of piano, Logic starts blinking on and off, alternating with whatever window is behind it. This is doubly frustrating.

Problems with firewire / coreaudio - abnormal cpu usage

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