Re: [LAD] ambix vs JUCE, segfault

On 04/13/2015 04:47 PM, Andres Cabrera wrote:
> Not sure if this works, but can Ardour be built with native linux VST
> support and ambix built as a native linux VST?

Yes, that is probably an option. But I'm interested in getting the LV2
version to work.
-- Fernando

> On Mon, Apr 13, 2015 at 4:42 PM, Fernando Lopez-Lezcano
> <nando@email-addr-hidden <mailto:nando@email-addr-hidden>> wrote:
>
> On 04/13/2015 11:24 AM, Paul Davis wrote:
>
> definitely caused by use of X / GUI toolkit calls from the wrong
> thread.
> Not legal.
>
>
> Ok, thanks, staring at code - no idea what to look for (Ambix uses
> the JUCE LV2 wrapper) ...
>
> On my laptop (Fedora 21 instead of Fedora 20, different video
> chipset) the GUI starts fine but it can randomly crash with the same
> message. Race condition that is sometimes triggered?
>
> Anyone our there running the Ambix LV2 plugins successfully? (in,
> for example, Ardour3?)
> -- Fernando
>
>
> On Mon, Apr 13, 2015 at 2:06 PM, Fernando Lopez-Lezcano
> <nando@email-addr-hidden <mailto:nando@email-addr-hidden>
> <mailto:nando@email-addr-hidden
> <mailto:nando@email-addr-hidden>>> wrote:
>
> 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
> xcb_xlib_inknown_req_in_deq'____failed
>
> And then ardour3 crashes.
> -- Fernando
>
>
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Received on Tue Apr 14 04:15:02 2015