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MP 1,1-5,1 Strange Audio Issue on MP 4,1>5,1 Mojave 10.14.4
- Thread starter rocksarntpeople
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I have tried some pretty extensive troubleshooting on this, including doing an upgrade to the Catalina public preview using the beta DosDude patcher. Audio glitches remain extremely bad over HDMI, and slightly less bad over analog output (but still not really usable IMHO).
One thing of note: This issue is at least to some extent dependent on the software you are running. For example, play a YouTube vid in Safari over HDMI and it's just about unusable. Play that same vid using FireFox and the problem is almost completely negated.
EDIT: Definitely software dependent. Some apps work with nearly zero audio glitches. I just ran the Unigine Heaven benchmark with audio on series of different video cards in a MacPro 4,1 flashed to 5,1 with the original 4-core E5520s and left the audio on. Barely a hitch or glitch anywhere. YouTube in Firefox is also OK, but not absolutely perfect. Safari, on the other hand, is basically unusable for audio.
One thing of note: This issue is at least to some extent dependent on the software you are running. For example, play a YouTube vid in Safari over HDMI and it's just about unusable. Play that same vid using FireFox and the problem is almost completely negated.
EDIT: Definitely software dependent. Some apps work with nearly zero audio glitches. I just ran the Unigine Heaven benchmark with audio on series of different video cards in a MacPro 4,1 flashed to 5,1 with the original 4-core E5520s and left the audio on. Barely a hitch or glitch anywhere. YouTube in Firefox is also OK, but not absolutely perfect. Safari, on the other hand, is basically unusable for audio.
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Only Nehalem dual processors have the stuttering problem. No Westmere dual processors have it.
OK thanks a lot
one last question According to you to keep my Mac pro another year with osx mojave would you do it? or change mac?
You can get 2 delided x5680 for around $160 to $170 or buy a pair still lidded for around $90 or less and delid yourself. It's a small investment for having Security Updates support until September 2021, no?
Yes ! I ordered two X5680 and 32GB of ram thank you again for your advice .
Must do a clean instal after the upgrade ?
You can use your current install, macOS will recognise the new processors and RAM, but a clean install is always a good thing to do when testing an upgrade.
A clean install is certainly not a bad idea, but as long as the computer is running well, then a clean install probably isn't actually necessary. The MacOS is still better than Windows at some things, and long-term stability is one of them.
Did you order a complete kit with the processors? In that case you are all set, just follow the instructions carefully if you haven't done these before. I've done about 5 of them recently, with almost 20 still to go (for a school), and it's not difficult or tricky, but you do have to be careful. Drop one of the chips into a socket accidentally? That could easily kill your system. So go slow, use care, and you'll be fine. I see you've already updated the firmware to the 5,1 firmware, so that's great. Oh, and last thing: If you haven't installed processors before do follow the instructions regarding the thermal paste (or whatever solution your kit come with - the most common is a paste), and don't use too much! Look up some YouTube videos if you want. Oh, and a second last thing: Your kit may have delidded chips, or it might have "normal" chips with the lids still on them. If it is the second option, then you also go through a process of modifying the power-connectors for the fans in the heat sinks and then installing washers so you can get the heat sinks to seat properly. And a third last thing: Don't forget to replace the thermal strips too. Hopefully you got a kit with all that stuff.
yes it's a complete kit , two processor without lid IHS I hope it's the same model !!!!
I also have the manual Apple Technician Guide
you really have to change the thermal bands ? if yes do you have a link to get an overview
thanks for your advices
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There are thermal strips on the bottom of the heat-sink assemblies (along one edge, not on the copper section). They can be in pretty bad shape when you take everything apart - many of mine have been getting kind of oil and gummy - like the material is starting to break down. It's not a bad idea to change them out. But if they look fine then don't worry about it! You *have* to change them if you go with the lidded-chip solution, which you didn't, because you have to have thicker ones for that application.
hello i went up the processors and ram today i have a problem it turns on but No starting noise Black screen !! Do you have an idea of the problem ?
I answer myself I found the problem one of the two processor is not working !
problem solved with a new xeon
everything is working properly and finished the audio problem
I answer myself I found the problem one of the two processor is not working !
problem solved with a new xeon
everything is working properly and finished the audio problem
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Dear all in this thread: Thank you very much for all this investigation. Just now I have installed two 2.66GHz 6 core X5650 into my 4,1>5,1 (was 2x2.26 E5520) and the funky annoying audio issues are no more. I did not want to spend any more money than necessary on my companion of ten years.
Much love and gratitude!
Much love and gratitude!
I have another question !
my CPU A heats up more than the CPU B 6-7 degrees more it's normal ? Xeon 5680
Thank
my CPU A heats up more than the CPU B 6-7 degrees more it's normal ? Xeon 5680
Thank
I'm not sure what you are asking about here, but I'm pretty sure it has nothing to do with THIS forum topic. If you are looking for some type of cooling solution, you need to start a separate thread.