Ubuntu 18.4.5 Ardour 6.x crashes Ardour 5 works

[Andreas1 (Andreas H Buch)]

Hi All,
mostly i use Ardour on my laptop and the new 6.0 and/or 6.2 Version work nicely, but on my desktop it crashes during start after loading a session or creating a new one and after the the audio adjustments. The same happens if i try to load a session created with ardour 5.12. When i invoke ardour6 in a terminal, the messages are all the same on my laptop and on my desktop except
“free(): invalid pointer
Abgebrochen (Speicherabzug geschrieben)” means “canceled (core dump written)”
I know that that information is almost useless as hint, but does anybody have an idea how to debug further.
Ubuntu Studio 18.4.5
thx

[x42 (Robin Gareus)]

Ubuntu 18.4 ? A guess based on prior report (linked below). Try:

sudo dpkg -P csladspa calf-ladspa

Process Error - Ardour won't launch

Maybe the same as Ubuntu Studio 17.10 Problem It is apparently also an issue on Ubuntu 18.04. try sudo dpkg -P csladspa If that doesn’t help we’ll need more information, crash log, and/or https://ardour.org/debugging_ardour Or interactive troubleshooting on IRC.

Ardour won't start

The actual crash however may be due to csladspa plugin, see also https://community.ardour.org/node/15363 and http://tracker.ardour.org/view.php?id=7489 Assuming this is Ubuntu or some debian derivative try sudo dpkg -P csladspa

Ardour Crashes after installing Qtractor and LMMS

We need a lot more information… Maybe you’ve installed other packages as side-effect? What GNU/Linux distribution are you using? Can you start ardour from a terminal and post the error message? A short in the dark: (from Ardour won't start) calf-ladspa and cs-ladspa are know to cause crashes when ardour starts on Ubuntu and derivatives maybe try sudo dpkg -P csladspa calf-ladspa

Other than that, a backtrace would be needed: https://ardour.org/debugging_ardour

[Andreas1 (Andreas H Buch)]

Hi Robin, thank you for your hint. I tried to remove the csladspa and calf-ladspa but i had not installed it only the calf package
Then i had the terrific idea to start ardour in the “safe” mode (all plugins disabled). Since than ardour start flawlessly . I have no clue what happened, but my problem is solved so far. But thanks again for your help

[x42 (Robin Gareus)]

@Andreas1

only the calf package

Perhaps that solved it indirectly.

For Calf, prefer the calf-plugins package (LV2 plugins – LADSPA version 2). – When Ardour scans calf-ladspa (LV1), there will be conflicts and crashes if you later load a calf LV2 plugin.