5K support in Linux mint

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-Max-
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Re: 5K support in Linux mint

Post by -Max- »

digipunk wrote: Fri Oct 15, 2021 12:26 pm Surely someone experienced could port the modified drivers to Linux? Also, I think I’ve found a solution to the audio issue. Could you please test it? Here: https://github.com/davidjo/snd_hda_macb ... -943435218
That link seems very interesting, and some of the posts are very recent. I'm away the following week, so I don't have access to the macine, but when I get back I'll tests it and if I have any positive result, I'll post.
digipunk

Re: 5K support in Linux mint

Post by digipunk »

Sure, let me know!
Last edited by digipunk on Sat Oct 16, 2021 5:10 pm, edited 1 time in total.
digipunk

Re: 5K support in Linux mint

Post by digipunk »

-Max- wrote: Sat Oct 16, 2021 2:53 pm
digipunk wrote: Fri Oct 15, 2021 12:26 pm Surely someone experienced could port the modified drivers to Linux? Also, I think I’ve found a solution to the audio issue. Could you please test it? Here: https://github.com/davidjo/snd_hda_macb ... -943435218
That link seems very interesting, and some of the posts are very recent. I'm away the following week, so I don't have access to the macine, but when I get back I'll tests it and if I have any positive result, I'll post.
How about we find out what the Pro 570 really is? The BootCamp drivers are labeled ‘R5 unified’. I also hear it is, in fact, an overclocked RX 470D. If you haven’t fully set your system up yet (I have, and I’ve got work-related software running on it), is there any chance you could try these drivers: https://www.amd.com/en/support/kb/relea ... -lin-18-40 , or even those I mentioned in my previous message? I’ve also contacted AMD asking them to explain how the BootCamp drivers work.

Update: the iMac does use a custom-made timing controller after all, since it would have been impossible to drive the 5K display with this hardware otherwise: https://www.anandtech.com/show/8623/han ... na-display . That’s the root cause, I guess. @SMG, this is pretty much what I meant when I surmised they had done it out of necessity ;)
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Re: 5K support in Linux mint

Post by -Max- »

digipunk wrote: Sat Oct 16, 2021 5:09 pm Update: the iMac does use a custom-made timing controller after all, since it would have been impossible to drive the 5K display with this hardware otherwise: https://www.anandtech.com/show/8623/han ... na-display . That’s the root cause, I guess. @SMG, this is pretty much what I meant when I surmised they had done it out of necessity ;)
But: https://www.ifixit.com/Answers/View/645 ... 9D+iMac+5k
it refers to your article as well but shows this is only the case for the 2014-15 models
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Re: 5K support in Linux mint

Post by SMG »

-Max- wrote: Sun Oct 17, 2021 4:56 am
digipunk wrote: Sat Oct 16, 2021 5:09 pm Update: the iMac does use a custom-made timing controller after all, since it would have been impossible to drive the 5K display with this hardware otherwise: https://www.anandtech.com/show/8623/han ... na-display . That’s the root cause, I guess. @SMG, this is pretty much what I meant when I surmised they had done it out of necessity ;)
But: https://www.ifixit.com/Answers/View/645 ... 9D+iMac+5k
it refers to your article as well but shows this is only the case for the 2014-15 models
One possible difference between the earlier models versus the later ones is the type of DP capability available for each system. That may be why there is a different controller used in each. I checked the Wikipedia: Displayport info and there may have been changes in technology available across that timespan.

Quoting from the link digipunk listed, "This also means that since it isn’t multi-tile, Apple would need to drive it over a single DisplayPort connection, which is actually impossible with conventional DisplayPort HBR2...our best theory is that Apple is running an overclocked DisplayPort/eDP interface along with some very low overhead timings to get just enough bandwidth for the job."

The xrandr output shows the port as DP and not eDP. Commonly, screens which are attached to the computer (such as laptops or all-in-one computers) are is listed as eDP. That may be another indication that Apple did something a bit different for this screen compared to what they may have done in the past.
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Re: 5K support in Linux mint

Post by -Max- »

The xrandr output shows the port as DP and not eDP. Commonly, screens which are attached to the computer (such as laptops or all-in-one computers) are is listed as eDP. That may be another indication that Apple did something a bit different for this screen compared to what they may have done in the past.
@SMG: Could you tell me where you see the port is listed as DP and not eDP in the xrandr output? I seem to only see eDP in the xrandr output.
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Re: 5K support in Linux mint

Post by SMG »

-Max- wrote: Tue Oct 19, 2021 5:00 am
The xrandr output shows the port as DP and not eDP. Commonly, screens which are attached to the computer (such as laptops or all-in-one computers) are is listed as eDP. That may be another indication that Apple did something a bit different for this screen compared to what they may have done in the past.
@SMG: Could you tell me where you see the port is listed as DP and not eDP in the xrandr output? I seem to only see eDP in the xrandr output.
I only see eDP as well. I'm not sure where I got it in my head that it was DP. Sorry about adding confusion to the thread. :(
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Re: 5K support in Linux mint

Post by -Max- »

SMG wrote: Tue Oct 19, 2021 9:48 am I only see eDP as well. I'm not sure where I got it in my head that it was DP. Sorry about adding confusion to the thread.
No worries :) :) , for a while there I though I was going slightly nuts :lol:
digipunk

Re: 5K support in Linux mint

Post by digipunk »

Update! AMD have responded as follows:

‘Unified R5 driver is the same as our Adrenalin driver for consumer graphics cards, but it can only install with Apple hardware. The 5K iMac has “tiled” display and the driver treats it like 2x 2.5K displays.’
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Re: 5K support in Linux mint

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digipunk wrote: Fri Oct 29, 2021 3:24 pm Update! AMD have responded as follows:

‘Unified R5 driver is the same as our Adrenalin driver for consumer graphics cards, but it can only install with Apple hardware. The 5K iMac has “tiled” display and the driver treats it like 2x 2.5K displays.’
A response from AMD. I'm impressed :) :)

But how can we get this specific driver, install it, and get it to recognize the apple hardware?
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