[Techtalk] MIdi, QjackCtl etc.

[David Sumbler]

On Sat, 2015-09-05 at 10:14 -0700, Terry wrote:
> On 05/09/2015 09:12, David Sumbler wrote:
> 
> <snipped>
> 
> > Cannot lock
> > down 82246176 byte memory area (Cannot allocate memory)
> 
> <snipped>
> 
> According to
> http://askubuntu.com/questions/166126/unable-to-start-jack-cannot-allocate-memory,
> the fix is to:
> 
> 1.  usermod -a -G audio theusername
> 
> 2.  Logout then login again as group membership is only updated on login.

The error I mentioned was just one of the problems.  The link you gave
was useful, but having followed its suggestions I still have no sound on
either computer when using jackd.


On Sat, 2015-09-05 at 23:39 +0530, A. Mani wrote:
On Sat, Sep 5, 2015 at 9:42 PM, David Sumbler <david at aeolia.co.uk>
wrote:
> > I wonder if somebody can point me in the right direction for sorting
out
> > a midi system.  Search as I might, I can't seem to find any *basic*
> > information about how to set things up, or how things fit together.
> 
> 
> 
> Join http://lists.linuxaudio.org/listinfo/linux-audio-dev , related
> mailing lists and have a look at their site.

The users group and the documentation here will be very useful if and
when I can get the sound working on my computers.  But unfortunately it
does not cover difficulties in actually getting sound to work!

Thanks to both of you for your suggestions.

I can play a midi file using Timidity, and sound generally works OK on
both my computers.  The problem I have is that once I have Qtractor or
Muse running, with QjackCtl too, although everything appears to be
working I get no sound.  This is after experimenting endlessly with
different software connections.  It is the same on both computers,
although they undoubtedly have very different hardware from each other.

David