On 05/21/11 19:44, Daniel B. Thurman wrote: > On 05/21/2011 04:20 PM, JD wrote: >> On 05/21/11 15:03, Daniel B. Thurman wrote: >>> I searched everywhere on the Internet and found >>> lots of people complaining that PCM could not be >>> opened, thus terminating jackd. >>> >>> Here is what I an getting from starting jackd via qjackctl: >>> >>> $ jackd -d alsa >>> jackd 0.118.0 >>> Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn >>> and others. >>> jackd comes with ABSOLUTELY NO WARRANTY >>> This is free software, and you are welcome to redistribute it >>> under certain conditions; see the file COPYING for details >>> >>> >>> Memory locking is unlimited - this is dangerous. You should probably >>> alter the line: >>> @audio - memlock unlimited >>> in your /etc/limits.conf to read: >>> @audio - memlock 1540245 >>> JACK compiled with System V SHM support. >>> loading driver .. >>> creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit >>> control device hw:0 >>> ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to >>> capture-only mode >>> configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods >>> ALSA: final selected sample format for capture: 16bit little-endian >>> ALSA: use 2 periods for capture >>> impossible sample width (1) discovered! >>> >>> I have tried everything, including the kitchen sink and cannot >>> seem to get jackd running. >>> >>> >> I had tried some months ago. >> I gave up because it ended up screwing up my audio >> so I could no longer get sound out. >> > The hard part is finding a site that tells you step-by-step > what exactly needs to be done. I had to cobble bits > and pieces together from different Internet postings to get > it to work, as many are for older versions of jack and/or > pulseaudio and for different distros - so I used Ubuntu/Fedora > distros to assemble it specifically for F13. > > > From memory, I recall: > 1) yum install pulseaudio-module-jack alsa-plugins-jack > jack-audio-connection-kit > 2) Add the user to audio, jackuser, pulse, pulse-access > 3) echo "autospawn = no"> ~/.pulse/client.conf > 4) cp /etc/pulse/default.pa ~/.pulse/pulsejack.pa > Edit and add after the below commented out line: > #load-module module-pipe-sink > load-module module-jack-source > load-module module-jack-sink > 5) reboot > > Sorry that I cannot locate the specific links where > I found all of the pieces... > > But once the basic configuration is done for both > jack and pulse audio, then one can proceed to use > qjackctl tool. > > See: https://help.ubuntu.com/community/HowToJACKConfiguration > > I found that jack has to be "tuned" to make sure > that there is the proper latency settings (mine is > @ ~25ms, and you can easily do this with the jack > tool: qjackctl and keeping an eye on minimizing > the Xruns, which determines the "optimal" latency > setting for your system. > > I have tried Hydrogen, MuseScore, Rosegarden and > these seem to work well. For fun. I had Amarok > running and at the same time Hydrogen Jazz drums > running and it was odd, but interesting. > > Some notes: > 1) Be careful not to checkbox the qjackctl->Misc:"Start > jack audioserver on application startup" as it hung > qjackctl and jackd. If that happens, then you have > to blow away: ~/.config/rncbc.org/QjackCtl.conf > file and start all over with the proper settings. > I could not locate the auto??? entry in this file. > > 2) Make SURE you get the correct qjackctl->Settings:Interface > value for your audio hardware or you get: 'Cannot find PCM..." > cryptic error. > > I hope I got it all here.... (crossing fingers) > Thanx a lot. I will retry it then! What I had wanted to use it for might still not work; namely to let me play some mp3 into a skype connection so that the person on the other end can hear good quality sound clip. I read some blogs on how to do that, but they were incorrect, so by following their suggestions, I had lost the audio sound and had to start all over. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
