www.makemkv.com

Yesterday I was trying to handle a disc, which caused some problems. MakeMKV said it can't decrypt, it looked like an unknown-key problem or something. I was on v1.18.2.

So I upgraded the AACS database in ~/.config/aacs and upgraded to MakeMKV v1.18.3, because the release notes said something about AACS (so I thought it might help).

Since then nothing works anymore. MakeMKV can't even read disks now, even those I successfully handled a couple days ago. It just hangs and shows the spinning-disk animation forever. After a while the disk drive goes silent. I can even remove the disk. MakeMKV is still pretending to read a disk. The Problem remains, even after I downgraded to 1.18.2 again and restored the previous AACS database. I also have 2 processes which eating up a full CPU core each:
Even when I close MakeMKV, those processes are still there.

When I kill them by force I have this:
... which is unkillable. I have to restart the computer to get rid of that one.

Something is fundamentally broken, and I don't know how to fix that. I could need some help.

You should try to isolate the cause.

First backup your configs, then wipe makemkv and do a fresh install, see if old known working discs are readable again.

Then you would know if newest makemkv works.

After that you can try the AACS update again to not run into problems with both at the same time

Is there a list somewhere, about where MakeMKV puts its files? I only know about this one: ~/.MakeMKV

It would also help if I knew where to find log files or something. MakeMKV going crazy and hugging the CPU ... I would like to know what kind of trouble it has.

Aside from that, I already tried reinstalling. No luck so far. I assume, this problem must be driven by a configuration/data state.

I also read, that MakeMKV isn't using the ~/.config/aacs database. Is that true?

Backup your ./MakeMKV just in case and then delete the .MakeMKV derectory from you /home.
Open MakeMKV to see if that help.

"I also read, that MakeMKV isn't using the ~/.config/aacs database. Is that true?"

I think that AACS file (KEYDB.cfg) should be in .MakeMKV directory.