Hi Redu,
You are correct about the purpose of qjackctl. It only helps you manage
jack configuration and patch bay state.
The line...
>>> |jackd -d alsa -d hw:0|
Tells me you are trying to start jack using ALSA for the back end on
device hw:0. This likely does not work because hw:0 is the wrong device
ID on that machine or it is busy. If you have sound for MP3s then Jack
should be usable. It simply isn't able to talk to the device for some
reason.
All that said, don't start Jack using the terminal. You are far better
off using a tool to manage it. Since you are using Ubuntu Focal, you
NEED to use Ubuntu Studio Controls for this to work reliably. Go to the
following link and read through it for instructions. (Ubuntu Studio is
an official part of Ubuntu proper.)
https://help.ubuntu.com/community/UbuntuStudio/UbuntuStudioControls
This covers everything you need to get Jack running correctly. Pay close
attention to the Audio setup section. This is where you configure the
audio devices. That tool will show you what the system sees as
legitimate devices you can use. One of them is the device you want. Try
each until you find the one that works.
Try that and let me know how it goes. Feel free to email me directly. I
have plenty of time to help today.
I have tested these tools on an old Dell Inspiron with an external USB
audio interface without problem. Once properly configured Jack and Pulse
worked fine and I could use both the onboard and USB audio devices at
the same time. This gave me three working audio devices on the same
system using Jack and Pulse without issue. So I'm positive we can get
that working easily. Then we can move to the HP and see how it goes.
Hope that helps,
Matthew
On 5/10/2020 7:46 AM, redu wrote:
Yoshimi source code is available from either:
On 10.5.2020 11.16, Will Godfrey wrote:
On Sun, 10 May 2020 07:34:58 +0300Thans Will!
redu <reino.urala@xxxxxxxxx> wrote:
Thank yoy all for educating me!Does audio work on the Cannon for playing (say) and MP3?
Qjackctl is just a GUI. Not needed necerrary. However, Qjackctl takes
care of Jack connections and offers a way to write a patchbey script to
make connections permanent.
But I was totally wrong: Qjackctl works well in my system, but what
fails is Jack. Starting Jack in terminal:
|jackd -d alsa -d hw:0|
does not start jack either.
Cannot initialize driver
JackServer::Open failed with -1
Failed to open server
I am totally confused.
Jack woul’nt start:
Ubuntu 20.04, HP Envy x360 laptop, IntelCorp Cannon point-LP audio
Jack starts normally:
Ubuntu 18.04. HP Envy x360 laptop, IntelCorp Sunrise point-LP audio
Ubuntu 20.04, Dell 17.3" Inspiron 17-3721
Installed latest Kernel 5.6.11 to problem HP. No luck. Jack still not
starts.
Cannot use Yoshimi in this Cannon point-LP audio HP laptop, as Jack
refuses to co-operate.
If not, it may be a lack of drivers - the company is not very co-operative with
Linux.
Alternatively this may be caused by a contention between jack and pulse audio.
There is the ability to get pulse to move out of the way, but I don't know the
details because I always have pulse permanently disabled.
If Yoshimi is going to be the only sound source for a composition, you might
also get round this by setting Yoshimi to use ALSA audio directly.
Yes, audio works well, if playing MP3 and MP4!
How to disable pulse permanently?
How to play Yoshimi less Jack, using an external USB keyboard? Stupid question? I never learned.
Yoshimi source code is available from either: https://sourceforge.net/projects/yoshimi
Or: https://github.com/Yoshimi/yoshimi
Our list archive is at: https://www.freelists.org/archive/yoshimi
To post, email to yoshimi@xxxxxxxxxxxxx