On 02/27/2011 02:12 PM, Dan Capp wrote: > * > david wrote: >> Hmm, maybe make a script that checks to see if firewire device is >> connected. If true, it starts JACK with the firewire backend, otherwise, >> it starts with your ALSA backend. Maybe you could run that script on >> startup.* > > Thanks David, but as a beginner I have no idea where to write this scipt. The goal you want to achieve is not really "beginner-level". Seamless JACK Destop integration is sth that even experts have not cleanly solved. It's mostly historical: AFAIK jack was never really intended as flexible desktop-sound daemon. OTOH writing a custom script for one individual use-case is not very hard. > I assume you don't mean that I write such a script in the QjackCtl setup GUI, > right? right. You do want to control qjackctl. The qjackctl "setup->scripting" options are intended if you want to control some other program(s) _from_ qjackctl. Shell Script is series of command written in plain text file. You write scripts it in a text editor. Save it to e.g. 'myfile.sh' and make it executable (right-click-on-file -> Properties -> Permisions -> "allow executing file as program" or use a Terminal run 'chmod +x myfile.sh'). "How to write shell script": http://www.freeos.com/guides/lsst/ch02sec01.html > *Dominic Sacr? wrote:* > *> The "Execute script on Startup" field is used to run a command before >> the JACK server is started (which may or may not be the same time >> QjackCtl is started). >> The meta-symbols can be used to pass parameters to the command. For >> example, if "alsa" is your active QjackCtl preset, %P would be replaced >> with "alsa" when the command is executed. > >> From your description it sounds like to don't need a startup script at >> all, but what you really want is "qjackctl -p alsa".* Alas, it's not going to be that easy. AFAIK that will only work if jack is not yet started. > That's very insightful Dominic - thanks! What would "qjackctl -p alsa" do > and where would I enter it? It launches qjackctl (if it is not already started) and selects the preset named "alsa". - Open a terminal and enter the above command. While you're at it: type "qjackctl --help" (without the quotes) in the terminal. and "man qjackctl" (manual page - press 'q' to exit the manual viewer).. You'd add that command to the programs to be started after login. On Gnome you can set those in Menu -> System -> Preferences -> Startup-Applications HTH, robin _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
