UHD discs won’t decrypt on Arm64 (linux)

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mtotheb
Posts: 35
Joined: Wed Jan 27, 2021 12:18 pm

UHD discs won’t decrypt on Arm64 (linux)

#1 Post by mtotheb » Fri Jun 14, 2024 4:01 pm

As the title says the software works up to the point where it has to decrypt the disc and then errors out with a Key not being found.
Supplying a keydb.cfg also doesn’t get it working and that’s why I assume it’s a bug on the software side of things. I‘m also not the only one who’s encountered this issue as per some other forums.

Does anybody have an idea how we can fix this bug but it’s probably something only Mike can fix with an update.

With Windows X86 the same Disc works just fine.
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dcoke22
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Joined: Wed Jul 22, 2020 11:25 pm

Re: UHD discs won’t decrypt on Arm64 (linux)

#2 Post by dcoke22 » Fri Jun 14, 2024 6:58 pm

What happens if you copy the _private_data.tar file from your Windows box to the appropriate place on your linux box? Does it work then?

mtotheb
Posts: 35
Joined: Wed Jan 27, 2021 12:18 pm

Re: UHD discs won’t decrypt on Arm64 (linux)

#3 Post by mtotheb » Fri Jun 14, 2024 9:35 pm

dcoke22 wrote:
Fri Jun 14, 2024 6:58 pm
_private_data.tar file
when and where would I find it?
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Woodstock
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Joined: Sun Jul 24, 2011 11:21 pm

Re: UHD discs won’t decrypt on Arm64 (linux)

#4 Post by Woodstock » Fri Jun 14, 2024 11:04 pm

_private_data.tar is usually in your MakeMKV data directory (not the program directory) on Windows computers.
MakeMKV Frequently Asked Questions
How to aid in finding the answer to your problem: Activating Debug Logging

dcoke22
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Joined: Wed Jul 22, 2020 11:25 pm

Re: UHD discs won’t decrypt on Arm64 (linux)

#5 Post by dcoke22 » Fri Jun 14, 2024 11:52 pm

The data directory is listed on the General tab of MakeMKV preferences.

Furthermore, out of curiosity, on your linux box, is that directory readable & writeable by MakeMKV?

The aforementioned .tar file is where MakeMKV stores hashed keys it downloads to decrypt UHDs.

Billycar11
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Joined: Sun Aug 24, 2014 5:49 am

Re: UHD discs won’t decrypt on Arm64 (linux)

#6 Post by Billycar11 » Sat Jun 15, 2024 1:39 pm

post the log there is also a bug on linux with some mk fw that you need to go to de fw
one example is bu40N 1.03mk on linux wont work but bu40n 1.00 de will
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