Hydrogen: Hydrogen not opening in Big Sur

[jonmay6]

Hydrogen version * :1.0.1
Operating system + version : Mac OS 11.0.1
Audio driver + version :

---

I upgraded to Mac OS 11.0.1 and Hydrogen no longer starts up. The wheels spins and then nothing.
hydrogen_2020-11-12-172042_MacBook-Air.txt

[cme]

I don't have a machine I can upgrade to Big Sur at the moment to try to reproduce this, but from the stack backtrace there's a possibility that the crash might be caused by an inconsistent h2song file.

Could you try deleting or rename your hydrogen.conf and see if the same crash still occurs?

(it's in Library/Application Support/Hydrogen/hydrogen.conf)

[jonmay6]

I deleted the file but the problem is the same. I also deleted the entire app with the same result.

On 17 Nov 2020, at 4:53 am, Colin McEwan [e-mail] wrote:

I don't have a machine I can upgrade to Big Sur at the moment to try to reproduce this, but from the stack backtrace there's a possibility that the crash might be caused by an inconsistent h2song file.

Could you try deleting or rename your hydrogen.conf and see if the same crash still occurs?

(it's in Library/Application Support/Hydrogen/hydrogen.conf)

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[bhopmann]

I can confirm this error with Big Sur.

[cme]

I deleted the file but the problem is the same. I also deleted the entire app with the same result.

Thanks for trying. Looks like I have to find a spare HD now!

[cme]

Apparently Apple have dropped support for my laptop in Big Sur (ugh) so I won't be able to replicate this directly. Could you get the debug tracing from Hydrogen itself, please?

You can do that with

/Applications/Hydrogen.app/Contents/MacOS/hydrogen -V Debug > ~/Desktop/hydrogen-debug.txt

from Terminal.

Also, if this doesn't lead to an answer, would you be willing to help out by running an instrumented debug build (or a few) to try and nail down the problem?

Many thanks!

[mauser]

We're currently using XCode 9.4.1 in our CI Jobs to build the OS X packages ( MACOSX_DEPLOYMENT_TARGET="10.12"). Could it be the case that this version is too old? I'm not too familiar with the XCode, so i don't if this is relevant. Just mentioning it :)

[cme]

Could it be the case that this version is too old? I'm not too familiar with the XCode, so i don't if this is relevant. Just mentioning it :)

It's possible but seems unlikely -- the stack backtrace that @jonmay6 provided shows that it asserts in the SongEditor; I'd expect a toolchain incompatibility to show up earlier in the startup process.

[theGreatWhiteShark]

The assertion sounds like #714

[bhopmann]

Although I did not start this post, I would like to contribute something to find the error. Attached you'll find the debug tracing.
hydrogen-debug.txt

[cme]

The assertion sounds like #714

Agreed. I'll spin a fixed dmg and post here, if someone with Big Sur can try to confirm it.

We're using a std::mutex for the audio lock at the moment, but recursive mutexes are also available in the std library, which might make a general improvement to the locking situation easier now.

[cme]

Hi, @jonmay6 , @bhopmann would you mind trying out this build:

Hydrogen-dev-1.0.1-bigsur.dmg

It's built from 1.0.1 but with an added fix for the race condition that I think the release build is hitting.

Thanks!

[jonmay6]

It works!

On 19 Nov 2020, at 7:16 am, Colin McEwan [e-mail] wrote:

Hi, @jonmay6 https://github.com/jonmay6 , @bhopmann https://github.com/bhopmann would you mind trying out this build:

Hydrogen-dev-1.0.1-bigsur.dmg https://drive.google.com/file/d/1lhEii-AKWlMW-sbr4gGBpZFYumQ5QFIT/view?usp=sharing
It's built from 1.0.1 but with an added fix for the race condition that I think the release build is hitting.

Thanks!

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[bhopmann]

Thanks @cme , it works for me too!