animani Posted November 1, 2009 Share Posted November 1, 2009 I have spent many days trying to sort this out with no success. So here it goes. My rig: Gigabyte EX58 UD5 i7 920 Rev.D Enermax Modu 82+ 525 W 3 SATA HDD 1 IDE HDD OCZ Platinum 1333 3x2GB Apple Keyboard, Razer Mouse Sapphire HD 4890 Vapor-X Motu 828 MKII USB 2.0 The problem is the following.... This rig is for making music on the OSX side so I use Logic Studio. I have tried 8 and 9 and non of them get to work fine. The thing is that I get random clicks and artifacts like when system is stressed but it does since the first note using any synth specially when the sequencer is playing. I have used the same sound card in my laptop which is a macbook and I also have a G5 and it has been working flawlessly for several years. So I can confirm this is a compatibility issue between my graphic card, sound card and logic. Something to do with Logic tho cause the sound card works fine under Ableton Live. It does sound fine under Itunes and starts getting artifacts when I open and use logic not even playing but moving around the interface. Should I this is due to incompatibility between Logic and HD 4890? The card works great under windows. My sound card does not work properly under windows due to a well known incompatibility between them. But I know it does fine under OSX. Tested back again. Should I buy a cheap graphic card and see if it does make any difference? Anyone suggesting anything t try out? Thanks for reading to this caveman. Best... Link to comment Share on other sites More sharing options...
omol Posted November 1, 2009 Share Posted November 1, 2009 Firewire audio i/o? Get a TI chipset firewire controller card. Link to comment Share on other sites More sharing options...
animani Posted November 1, 2009 Author Share Posted November 1, 2009 I Motu 828 MKII USB 2.0 I now discovered that changing the buffer to 1024 does not do it at all but that is unacceptable. I can create but it is not normal. I normally have it on 256 or 128 on laptop or G5. You normally got to go really low to get artifacts. I was thinking could be something related to Bios. Memory latency or something like that. I heard that tight times cause problems. These are ocz 1333 7-6-7 or something like that. ..... Link to comment Share on other sites More sharing options...
animani Posted November 1, 2009 Author Share Posted November 1, 2009 One more thing I found. IT is not a Motu problem as I have used Virus Ti as a sound card and it does the same where artifacts disappear on 1024 latency. I was thinking it could be a bad usb driver or something? USB High-Speed Bus: Host Controller Location: Built In USB Host Controller Driver: AppleUSBEHCI PCI Device ID: 0x3a3a PCI Revision ID: 0x0000 PCI Vendor ID: 0x8086 Bus Number: 0xfd 828USB: Product ID: 0x0002 Vendor ID: 0x07fd Version: 0.03 Speed: Up to 480 Mb/sec Manufacturer: MOTU Location ID: 0xfd500000 Current Available (mA): 500 Current Required (mA): 0 Could I use another kext for the drivers? These come from iATKOS but I did not choose any.... Suggestions ? Link to comment Share on other sites More sharing options...
animani Posted November 1, 2009 Author Share Posted November 1, 2009 One more thing I found. IT is not a Motu problem as I have used Virus Ti as a sound card and it does the same where artifacts disappear on 1024 latency. I was thinking it could be a bad usb driver or something? USB High-Speed Bus: Host Controller Location: Built In USB Host Controller Driver: AppleUSBEHCI PCI Device ID: 0x3a3a PCI Revision ID: 0x0000 PCI Vendor ID: 0x8086 Bus Number: 0xfd 828USB: Product ID: 0x0002 Vendor ID: 0x07fd Version: 0.03 Speed: Up to 480 Mb/sec Manufacturer: MOTU Location ID: 0xfd500000 Current Available (mA): 500 Current Required (mA): 0 Could I use another kext for the drivers? These come from iATKOS but I did not choose any.... Suggestions ? Could Bios setup have any impact on audio performance? (Latency) What a monologue.... Link to comment Share on other sites More sharing options...
animani Posted November 4, 2009 Author Share Posted November 4, 2009 Back Up! Link to comment Share on other sites More sharing options...
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