[Ardour-Users] LinuxVST in Ardour4.0.0 on Ubuntu 14.04 LTS x86-64?

Gunter Königsmann gunter at peterpall.de
Wed May 6 21:37:16 PDT 2015

I am currently working with wxMaxima which is a front-end for the 
computer algebra system maxima and I always wonder why it is 
implemented as a client-server architecture: The actual mathematics is 
done by a separate program. This sounds monstrous and has its 
disadvantages, too. But if the process that does mathematics crashes 
this does not tend to be a problem: The program that contains the 
worksheet with the actual user data still lives on.
Would it be possible to write a external program that scans for AU or 
VST plug-ins and populates a list with them? This program could run in 
the background not delaying the start-up of ardour too much and it 
could even inform the list that a certain plug-in crashed before 
actually testing if this assumption was right and (if it didn't) 
correcting the error after actually scanning the plug-in: This way the 
list would even contain the information which plugin caused a crash.

Kind regards,


On Mo, Mai 4, 2015 at 6:13 , Robin Gareus <robin at gareus.org> wrote:
> On 05/03/2015 08:58 PM, Per Sigmond wrote:
>>  That helped. Thanks.
> you're welcome.
>>  So vst plugins are not automatically scanned for, but it seems 
>> lv2/ladspa
>>  plugins are. A little confusing, but I assume there is a good 
>> reason for this
>>  difference in behaviour?
> Yes, various reasons.
> LV2 plugins can be discovered by just reading the ttl (description). 
> The
> plugin itself does not need to be instantiated. It's fast and it's 
> robust.
> Scanning AU or VST may crash ardour[1]. Some users never even saw
> ardour. It always crashed at start while discovering plugins.
> If the crash happens when a user explicitly asks to scan, there is at
> least some clue.
> Some VSTs perform license checks, pop up dialogs (please register 
> etc),
> other VSTs can take a long time. If you have a few hundred plugins
> installed a scan can take minutes.
> If none of the above is an issue for you, there's a checkbox in
> preferences to always scan at start.
> ciao,
> robin
> [1] some aspects of this has been mitigated. VST discovery is now
> delegated to an external scanner app. Also a crash during scan will
> disable the 'automatic scan at start' preference and ardour maintains 
> a
> blacklist..
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