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This issue was still here last week, I suspect it's still here today ...
And there are also some graphic drivers issues with VMWare fusion 13 on this iMac
I forgot to ask when I posted initially, is the Chrome issue even related to OCLP? I remember reading about someone having it on a natively supported Ventura Mac. I just wasn't able to find it again when searching for the issue.
 
Happy New Year to all

Today I installed in cMP4.1-5.1 a USB Hub (with SL2.1s chip) in order to get the Bluetooth in ventura.
I powered it with +5V by soldering 2 wires under one of the 2 USB ports of the front panel board.

It's nice to be able to use Magic Mouse with ventura again...

IMG_2696.JPG

Capture d’écran 2023-01-03 à 19.31.27.png
 
13.1 with telemetry patch on latest weg, coreboot/tianocore skylake
there is some bug on the KBL/SKL spoof graphics, the fonts are all missing (expect in safari)
only sometimes fix is load edge, then chrome see fonts back again
and also rtl8111 network goes down if I don't ping a heartbeat site
and corrupt video when starting(and fake hang), can fix with switch hdmi1 to hdmi2 and then back to hdmi1
 
Happy New Year to all

Today I installed in cMP4.1-5.1 a USB Hub (with SL2.1s chip) in order to get the Bluetooth in ventura.
I powered it with +5V by soldering 2 wires under one of the 2 USB ports of the front panel board.

It's nice to be able to use Magic Mouse with ventura again...

View attachment 2136659

View attachment 2136661
Please would you provide more details of where you supplied the +5 V to the PCIe adapter board. Did you use one or both the R1 pads. I have the same adapter and BT board as you and have WiFi with D+ and D- wired to USB but cannot get BT even with 3.3 V supplied to innermost pad of R1.
 
Happy New Year to all

Today I installed in cMP4.1-5.1 a USB Hub (with SL2.1s chip) in order to get the Bluetooth in ventura.
I powered it with +5V by soldering 2 wires under one of the 2 USB ports of the front panel board.

It's nice to be able to use Magic Mouse with ventura again...

View attachment 2136659

View attachment 2136661
This is a clever setup. Care to share how you did this? Where you were able to source the PC board and where you made the connections to the plugged in Bluetooth/WiFi card and where you tapped in the power for the PC board? It would be nice to share this information so that other's with the 5,1 MacPro can replicate this and regain bluetooth support, thanks.
 
Can these components be easily ordered? Can you provide a link? How about some schematics?
Hi @PeterHolbrook
I bought a set of 2 USB 2.0 hubs from Amazon.fr but you can also find them at Amazon.com and on eBay

USB2.0 Splitter.jpg

I removed the plastic shell and unsoldered all the USB plugs to get only the board.
For those who don't want to remove the plastic case and desolder the USB plugs, there are ready to solder modules on eBay...

The wiring diagram has been published message #2671 by @Larsvonhier

@nekton1
as I said in my previous message, I powered it with +5V by soldering 2 wires (+5V —> red wire and GND —> black wire) under one of the 2 USB ports on the cMP front panel board.

IMG_2683.JPG

The USB data, D+ (green wire) and D- (white wire) from the output of the Mini PCI-E adapter card connect to one of the 3 USB 2.0 inputs of the hub card (D+ with D+ and D- with D-)
The USB data, D+ (green wire) and D- (white wire) from the output of the hub card connect to the JST GH 1.25mm socket of the old Bluetooth card.

IMG_2689.JPG

It's as simple as that...
 
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Has anyone had success using a BT5.x USB dongle on a Ventura unsupported Mac? If yes, what dongle brand/model and Mac?
 
I powered it with +5V by soldering 2 wires (+5V —> red wire and GND —> black wire) under one of the 2 USB ports on the front panel board.
I'm not sure I interpret this correctly. It seems to me that "the front panel board" refers to the cMP itself, correct? If so, does the soldering of those two wires somehow thwart the regular operation of the cMP two front USB ports? Will they still work after putting this USB hub in place?
 
Hi @PeterHolbrook

I'm not sure I interpret this correctly. It seems to me that "the front panel board" refers to the cMP itself, correct?

Correct, the front panel board I mentioned is the one from the cMP (with the audio output, the 2 USB ports and the 2 FW ports).

If so, does the soldering of those two wires somehow thwart the regular operation of the cMP two front USB ports?

No, not if you weld correctly with the right tools.

Will they still work after putting this USB hub in place?

Yes, only a very small part of the power supply of the USB port is used (I think I read on the datasheet of the SL2.1s chip that its consumption was between 50mA min to 120mA max) so this port still works after the installation of this USB hub. I made several tests with different USB sticks and external hard drives, all worked perfectly.
 
Hi @PeterHolbrook
I bought a set of 2 USB 2.0 hubs from Amazon.fr but you can also find them at Amazon.com and on eBay

View attachment 2136754

I removed the plastic shell and unsoldered all the USB plugs to get only the board.

The wiring diagram has been published message #2671 by @Larsvonhier

@nekton1
as I said in my previous message, I powered it with +5V by soldering 2 wires (+5V —> red wire and GND —> black wire) under one of the 2 USB ports on the cMP front panel board.

View attachment 2136755

The USB data, D+ (green wire) and D- (white wire) from the output of the Mini PCI-E adapter card connect to one of the 3 USB 2.0 inputs of the hub card (D+ with D+ and D- with D-)
The USB data, D+ (green wire) and D- (white wire) from the output of the hub card connect to the JST GH 1.25mm socket of the old Bluetooth card.

View attachment 2136770

It's as simple as that...
The place to take the 5V for supply from is a good one, esp. as it is not directly on the mainboard (who would want to solder there without a good reason). One improvement would be to connect to the "fat" ceramic cap nearby instead of the USB conn. pins. This decouples the supply better from possible ripples that occur when plugging in or detaching external USB devices to the outer front jack. Makes the BT hub function a bit more robust. (While it still does not cure the effect that overcurrent of external devices switches off the port supply altogether, thus disconnecting the BT devices...)

btw, the FE8.1s chip can be supplied by the 3.3V from the 4pin socket directly, perhaps that would be possible also with the SL2.1?
(On my upcoming board revision -see rendering- I´ll make use of that FE8.1 feature and will not need the additional USB supply cabling).
 

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Hi @Larsvonhier

Right, the SL2.1s chip can also be powered with 3.3V (to use the power supply of the original Bluetooth card) but I would have had to modify the PCB of the USB hub... I didn't do it because I wanted to test quickly that's why I used the 5V power supply of one of the USB ports of the front panel. You are right I should have wired on each side of the C303 capacitor for more stability, but I almost never use this USB port (this modification will be for version 2.0 ;)).

However I really like your idea of a designed board to replace the old Bluetooth board as it simplifies the wiring.
 
See here:

https://github.com/dortania/OpenCore-Legacy-Patcher/issues/1008

„Hardware Encode/Decode (ex. slow initial Chrome loading)“
Initially I had thought it was related to hardware. Disabling hardware acceleration in Chrome didn't seem to resolve the problem though. I'll see what happens in a couple more months to see if the issues listed there are able to be resolved. I also remember reading somewhere the graphics card in some iMacs can be replaced. do the late 2015 iMacs have the ability to have the card replaced? I have a 27"
 
No, you can't replace the graphic card on these iMacs ...
Like you, I am waiting for possible improvement to OCLP with this specific hardware to retry ...
I am not sure it's something feasible ...
 
Not to disparage anyone's efforts, but, provided the relevant components are available, there seems to be a prior, cleaner solution, at least for those of us having a Titan-Ridge Thunderbolt card. See https://forums.macrumors.com/threads/testing-tb3-aic-with-mp-5-1.2143042/post-27437256.
Won´t disparage me at all, thanks for the link to the Titan-based solution with additional hub. Did not know about that...

For those who have not invested the $100 for the "Ridge", I still think my solution will be as compact and tidy as it gets.
Plus two optional OOB-working 2.0 ports that start working directly on power-up (for boot selection via attached keyboard, etc.)

Card is already in production (again) with the FE8.1 chip this time. Stay tuned...

Bildschirmfoto 2023-01-04 um 15.59.52.jpg
 
No, you can't replace the graphic card on these iMacs ...
Like you, I am waiting for possible improvement to OCLP with this specific hardware to retry ...
I am not sure it's something feasible ...
I wasn't sure. The only reason I haven't considered just financing a new iMac is there is no Silicon 27" iMac currently. I've found this iMac the perfect balance between features and space as well as cost. At least if I chose to switch to Linux on here, the fix is much easier. The built in speakers don't work reliably. The most agreed on solution is simply buying a $40 usb sound card and using that instead. Bluetooth also works, but the sound card would be a more reliable long term solution between the two. It's becoming a tougher choice because I do like macOS and have depended on the mac for many years because for a long time it's been the best for my visual impairment. Now Linux and Windows both have improved features out of the box than several years ago. I like some of the mac specific software, but today what really keeps me with the Mac is the built in integration for text message forwarding. I like using a physical keyboard than a touch screen, or dictation. Especially for any kind of detailed conversations.
 
Won´t disparage me at all, thanks for the link to the Titan-based solution with additional hub. Did not know about that...
For those who have not invested the $100 for the "Ridge", I still think my solution will be as compact and tidy as it gets.

Actually, the Titan Ridge card is not a requirement for the tiny hub. It can provide USB 2.0 data lines to anything.

For the sake of reference, here’s another recent solution:

 
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I am also waiting for a 27 iMac equivalent…
But I need macOS for Xcode development and because I am fully in the Apple ecosystem
For the moment, staying in Monterey is not a big issue, it I don’t like to be out of date …
 
Actually, the Titan Ridge card is not a requirement for the tiny hub. It can provide USB 2.0 data lines to anything.

For the sake of reference, here’s another recent solution:

ah, nice - so the only feature that my hub design will have is to supply a decent amount of current on the 5V it also generates (without having to hook it up from somewhere else) for external extra USB ports. Also the original Apple cable (that connects from mainboard to BT module) can be still used.

Besides, if demand is there I´ll manufacture some for interested users here.
If not, they go to the cMP equipment we use in our office... ;-)
 
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ah, nice - so the only feature that my hub design will have is to supply a decent amount of current on the 5V it also generates (without having to hook it up from somewhere else) for external extra USB ports.
Yes, I think that's the novelty with your design. I focused on just the USB data lines (and TBT header logic in my most recent design). I was uneasy with drawing too much from the internal header as the header in the Mac Pro was designed really just for the original BT module.
 
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I am also waiting for a 27 iMac equivalent…
But I need macOS for Xcode development and because I am fully in the Apple ecosystem
For the moment, staying in Monterey is not a big issue, it I don’t like to be out of date …
For me Mac OS X really helped me transition from classic mac os to Unix So for a while I enjoyed the apple specific stuff front most, but as time has gone on, I've started looking at open source and cross platform solutions for many things. Some things are easier to find alternative over others. However, it's not as hard as it was a few years ago. I'm just looking for a good solution for being able to control hardware and software, and while Apple has always been somewhat strict with things, they've gotten much worse. I like Apple for my mobile devices such as iPhone, iPad, even the Apple TV, but their desktops are more frustrating to someone who likes to have the options of customizing hardware, and not being locked into a particular OS. Intel Macs were good for running just about any OS within reason, and maybe ARM will become more flexible as it matures. However, I just don't feel confident right now about finding a suitable replacement from Apple For this iMac. Also, I'm not expecting the mac to die in the next 5 minutes either, it's just at one of those spots where I'm not fully satisfied with my upgrade options, when I need to.
 
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