JACK latency change causes crash

[Yorick Henning]

When you change the latency with JACK selected as API, you get a fatal assert:

First time:
ASSERT: "m_pControlObject" in file src/controlobjectthread.cpp, line 32

Fourth time:
Debug: Opened PortAudio stream successfully... starting
Debug: PortAudio: Started stream successfully
Fatal: ASSERT: "m_pControlObject" in file src/controlobjectthread.cpp, line 32
Aborted (core dumped)

Getting the program back into this condition, I couldn't do though. Yet another race probably... The wonders of threaded programming. :)

[Albert Santoni (gamegod)]

Yorick, does this happen in beta2 and/or SVN still?

Thanks! (I can't remember if I fixed this or not...)

[Yorick Henning (p-yorick)]

This is still happening. Sp'ifically, it now happens on startup once
you've configured to JACK and closed down once - terminating JACK and
starting up again fixes it though (Mixxx realises there's no jackd and
reverts to ALSA I suppose).

I notice that the latency slider is now locked at 16ms for JACK
though. Is it actually 16ms or 0ms? But given the latency slider is
locked, I can't really tell if changing it on the fly causes a crash,
can I? ;)

~Y

On Sun, Mar 2, 2008 at 6:05 AM, Albert Santoni <email address hidden> wrote:
> Yorick, does this happen in beta2 and/or SVN still?
>
> Thanks! (I can't remember if I fixed this or not...)
>
> ** Changed in: mixxx
> Importance: Undecided => High
> Status: New => Triaged
>
>
> --
> JACK latency change causes crash
> https://bugs.launchpad.net/bugs/191518
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in Mixxx: Triaged
>
>
>
> Bug description:
> When you change the latency with JACK selected as API, you get a fatal assert:
>
> First time:
> ASSERT: "m_pControlObject" in file src/controlobjectthread.cpp, line 32
>
> Fourth time:
> Debug: Opened PortAudio stream successfully... starting
> Debug: PortAudio: Started stream successfully
> Fatal: ASSERT: "m_pControlObject" in file src/controlobjectthread.cpp, line 32
> Aborted (core dumped)
>
> Getting the program back into this condition, I couldn't do though. Yet another race probably... The wonders of threaded programming. :)
>

[Albert Santoni (gamegod)]

Ok, thanks for the update Yorick, I'll have to play around and try to reproduce this on my system....

[seamus1089 (s-holden1)]

This still occurs in beta3 btw.

Cheers
Seamus

[ironstorm (ironstorm-gmail)]

This was marked as fixed.... But was it?

[Albert Santoni (gamegod)]

Yes, latency is no longer changeable with JACK as an API, because it's
determined by the JACK daemon anyways.

On Mon, Nov 17, 2008 at 3:41 PM, ironstorm <email address hidden> wrote:
> This was marked as fixed.... But was it?
>
> --
> JACK latency change causes crash
> https://bugs.launchpad.net/bugs/191518
> You received this bug notification because you are a member of Mixxx
> Development Team, which is subscribed to Mixxx.
>

[ironstorm (ironstorm-gmail)]

fair enough, closing.

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issue/4916

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/4916