[LAD] ambix vs JUCE, segfault

Fernando Lopez-Lezcano nando at ccrma.Stanford.EDU
Mon Apr 13 18:06:37 UTC 2015

On 04/13/2015 07:13 AM, Tito Latini wrote:
> On Sun, Apr 12, 2015 at 07:29:41PM -0700, Fernando Lopez-Lezcano wrote:
>> Anyone out there using ambix on Linux?
>> I'm seeing various instabilities, for example trying out the converter
>> standalone I get a segfault when connecting output ports, and it looks
>> like the Jack JUCE component is doing some unaligned memory copies.
>> Any hint on how to fix this?
>> I get Ardour crashes if I try to use the converter LV2 plugin as well.
>> See below for a trace of the standalone binary...
>> Thanks for any help!
>> -- Fernando
>> [...]
> I have compiled the git-version and tested with the converter standalone.
> The attached patch should fix this problem.

Thanks Tito!
That seems to have fixed that problem. But I'm still having other 
problems :-(

On a different machine I see this problem when I try to bring up the LV2 
GUI for the encoder plugin in, say, ardour3:

[xcb] Unknown request in queue while dequeuing
[xcb] Most likely this is a multi-threaded client and XInitThreads has 
not been called
[xcb] Aborting, sorry about that.
xcb_io.c: 179: dequeue_pending_request: Assertion 

And then ardour3 crashes.
-- Fernando

More information about the Linux-audio-dev mailing list