audio drops for few ms, or one sec, with jack on ubuntu (was: Mess with Pd installation on Linux)
Coming back to a previous thread I started, having compiled pd with jack, having done the realtime scheduling in jack, opening pd with '-jack' and '-rt' I still get some audio drop outs. The sound actually stops for a few ms, or even about a second, then comes back.
From the previous thread I was told that probably jack is waiting for
samples that pd doesn't provide at certain moments. I went through jack's manual, but it is a manual for programmers and I'm not one, so I didn't make much of it. The only thing I found in jack's FAQ is a question about audio with jack on a macbook (I'm on a macbook with ubuntu) that mentions a drivers problem that distorts the output http://jackaudio.org/macbook_distortion but my output is not distorted... I also tried to start up jack like this $ jackd -d firewire -d NVidia but it really didn't make any difference (why should it? it uses the same sound card with or without '-d NVidia'). Also used QjackCtl to change the block size, but also didn't work. Dunno if this message in jack's terminal says something about the situation: JackEngine::XRun: client = pure_data_0 was not run: state = 2 JackAudioDriver::ProcessGraphAsyncMaster: Process error
It appears whenever I open pd with '-jack' I'm on a macbook 5,2 with ubuntu 12.04 and pd-0.45-4 Can anyone help?
Forgot to mention that whenever I move a window around, open a subpatch, swich between applications while the audio is running, the sound stops till I stop which ever action. Also I'm running $ jackd -d firewire -d hw:NVidia (forgot to write hw: in the first email)
On Thu, Jan 2, 2014 at 1:29 PM, Alexandros Drymonitis adrcki@gmail.comwrote:
Coming back to a previous thread I started, having compiled pd with jack, having done the realtime scheduling in jack, opening pd with '-jack' and '-rt' I still get some audio drop outs. The sound actually stops for a few ms, or even about a second, then comes back. From the previous thread I was told that probably jack is waiting for samples that pd doesn't provide at certain moments. I went through jack's manual, but it is a manual for programmers and I'm not one, so I didn't make much of it. The only thing I found in jack's FAQ is a question about audio with jack on a macbook (I'm on a macbook with ubuntu) that mentions a drivers problem that distorts the output http://jackaudio.org/macbook_distortion but my output is not distorted... I also tried to start up jack like this $ jackd -d firewire -d NVidia but it really didn't make any difference (why should it? it uses the same sound card with or without '-d NVidia'). Also used QjackCtl to change the block size, but also didn't work. Dunno if this message in jack's terminal says something about the situation: JackEngine::XRun: client = pure_data_0 was not run: state = 2 JackAudioDriver::ProcessGraphAsyncMaster: Process error
It appears whenever I open pd with '-jack' I'm on a macbook 5,2 with ubuntu 12.04 and pd-0.45-4 Can anyone help?
Just an addition to this, it shouldn't be pd's problem as I tried jack with audacity and got drop outs there as well. I'd be grateful to any help..
On Thu, Jan 2, 2014 at 2:05 PM, Alexandros Drymonitis adrcki@gmail.comwrote:
Forgot to mention that whenever I move a window around, open a subpatch, swich between applications while the audio is running, the sound stops till I stop which ever action. Also I'm running $ jackd -d firewire -d hw:NVidia (forgot to write hw: in the first email)
On Thu, Jan 2, 2014 at 1:29 PM, Alexandros Drymonitis adrcki@gmail.comwrote:
Coming back to a previous thread I started, having compiled pd with jack, having done the realtime scheduling in jack, opening pd with '-jack' and '-rt' I still get some audio drop outs. The sound actually stops for a few ms, or even about a second, then comes back. From the previous thread I was told that probably jack is waiting for samples that pd doesn't provide at certain moments. I went through jack's manual, but it is a manual for programmers and I'm not one, so I didn't make much of it. The only thing I found in jack's FAQ is a question about audio with jack on a macbook (I'm on a macbook with ubuntu) that mentions a drivers problem that distorts the output http://jackaudio.org/macbook_distortion but my output is not distorted... I also tried to start up jack like this $ jackd -d firewire -d NVidia but it really didn't make any difference (why should it? it uses the same sound card with or without '-d NVidia'). Also used QjackCtl to change the block size, but also didn't work. Dunno if this message in jack's terminal says something about the situation: JackEngine::XRun: client = pure_data_0 was not run: state = 2 JackAudioDriver::ProcessGraphAsyncMaster: Process error
It appears whenever I open pd with '-jack' I'm on a macbook 5,2 with ubuntu 12.04 and pd-0.45-4 Can anyone help?
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Alexandros Drymonitis