Razer Core X Chroma: Is there really no fix to stablize the USB 3.1s?
 
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Razer Core X Chroma: Is there really no fix to stablize the USB 3.1s?  

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Dgw4846
(@dgw4846)
New Member
Joined: 3 months ago
 

I thank the stars I combed through this site and others and found the ASIX drivers to download to stablize the CXC's ethernet port.  That was spotty but the AX88179 driver seems to have fixed that issue for now.  But I can't find any clear advice to solve how to stabilize the other 4 USB 3.1s (other than get rid of it and use a Core X with a separate hub).  Anyone have a lead on where one can find the USB drivers for MacOS Big Sur 11.4? 

I've got the Core X Chroma TB3-ed to my MacBook Pro 13 and am using peripherals (AKG mic , iPad (via Luna Display for a teleprompter), and Logitech BRIO webcam.  It cuts out rather randomly on the iPad and BRIO no matter what port I plug into.  I have learned from others on this forum that Razer has been aware of the poor connection issue for a while, but I asked them anyway (crickets from Razer so far).   I am a novice and maybe I'm missing something so obvious to others, but is there is some likely issue with the MacOS Host Controller Driver: AppleASMediaUSBXHCI that is connected to these USBs? 

Any other suggestions are welcome, please!

I've spent way too much time trying to find a solution.  Aside, in parallel, I tried out a Blackmagic and it was totally fine with the same configuration.  USBs were solid, could run an ethernet adapter, plus it could give a stronger charge in mA to the iPad when connected. But I'm looking to boost the graphics more than the RX580 can in the Blackmagic and trying to think longer term in case I need to upgrade.  But maybe I'll just go back to that.  Beats banging my head against this wall. Can't believe I actually thought the CXC would be totally plug and play with my set up.

Thoughts?

 

MacBook Pro (2017) Big Sur 11.4, Razer Core X Chroma (AMD RX6800), using peripherals (AKG Lyra Mic, Luna Display, iPad (5thGen), Logitech BRIO webcam).


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Dgw4846
(@dgw4846)
New Member
Joined: 3 months ago
 

Just an update I found a "fix" archived on Reddit, but it's for Windows.  Look like the path is remove the ASmedia serial USB bus controller drivers and use the native Windows drivers.  Curious if anyone have a fix on Big Sur 11.4?  Currently my system info says the USB 3.1 Bus Host Controller Diver is

AppleASMediaUSBXHCI

Anyone found a way to reassign a more reliable driver in Big Sur?

 

MacBook Pro (2017) Big Sur 11.4, Razer Core X Chroma (AMD RX6800), using peripherals (AKG Lyra Mic, Luna Display, iPad (5thGen), Logitech BRIO webcam).


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joevt
(@joevt)
Noble Member
Joined: 4 years ago
 

@dgw4846, all the XHCI drivers in macOS are written by Apple and use mostly the same code.

You can try making a codeless kext to force the Asmedia controller to use the normal Apple XHCI driver.

Or you can try generic USB kext. I'm not sure where the latest version is at or if it will work in Big Sur:
  https://sourceforge.net/projects/genericusbxhci/
  https://github.com/RehabMan/OS-X-Generic-USB3
I just received a USB 3.2 gen 2x2 PCIe card (ASMedia ASM3242) so I'll try this driver one day soon since the Apple driver does not support USB 20 Gbps (but it works with the PCIe card at 480 Mbps, 5 Gbps, 10 Gbps).

In either case, the new kext needs a higher probe score than AppleASMediaUSBXHCI.

 

 

Mac mini (2018), Mac Pro (Early 2008), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Radeon Pro W5700, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case


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