Re: [LAD] ambix vs JUCE, segfault

Not sure if this works, but can Ardour be built with native linux VST
support and ambix built as a native linux VST?

Cheers,
Andrés

On Mon, Apr 13, 2015 at 4:42 PM, Fernando Lopez-Lezcano <
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>> 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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>>
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Received on Tue Apr 14 04:15:02 2015