2010-08-24 15:56, [email protected] skrev: > > > Le 24/08/2010 12:11, Cory K. a écrit : >> On 08/24/2010 04:56 AM, David Henningsson wrote: >> >>> Hi, >>> >>> Adding users to the audio group is not recommended for reasons I've just >>> documented here: https://wiki.ubuntu.com/Audio/TheAudioGroup >>> >>> Looking at ubuntu studio documentation, you seem to recommend people to >>> add themselves to the audio group pretty much (found by doing a search >>> for "audio group" on help.ubuntu.com), so can we remove it? Change it to >>> something else? >>> >>> >> That's under the "community" section. Something we don't control.
Or rather, we control it as much as anyone else in the community. >> >> Also, it was nessesary in the past because of permissions needed for >> some soundcards. (firewire I believe) From what I have seen, our users >> are folks who have "single-user" systems. (this is actually our target >> audience and setup) So your "Implications" section will not apply to >> them. >> >> Someone with more current grasp on the situation should chime in. As >> long as a solution can be found that works for everyone we can change >> the documentation. In the end, adding users still might be needed for >> corner cases and those folks won't care. They'll just want their gear to >> work. :) >> >> >> -Cory K. >> >> > David, Cory, > > Their would be one case, when a user would have his workstation in a > dedicated room for noisy hardware, and use a remote connection with a > low power computer in the studio, where this could be a problem as David > described. Right, noted. > With the current LTS release, the use of the "audio" group is for a real > time use of jackd. The document you may have found is this one, I guess: > https://help.ubuntu.com/community/UbuntuStudioPreparation#Real time > (-rt) and Low latency (-lowlatency) kernels > <https://help.ubuntu.com/community/UbuntuStudioPreparation#Real%20time%20%28-rt%29%20and%20Low%20latency%20%28-lowlatency%29%20kernels> And a few more, yes. > For firewire sound cards, ffado driver needs user to be member of the > "video" group, as a firewire sound card is considered to be similar as a > "dv" camera by firewire libraries. Slightly off topic, does this apply to the new fw stack in maverick as well, or are fw devices handled by ConsoleKit? (Note to myself: I should really upgrade to maverick and test that, soon.) > Maybe, we just have to change "audio" group for "realtime" or something > like that. Seems reasonable. In addition, a few months ago, I made a client unit for requesting real-time privileges through realtimekit (for FluidSynth), and while this does not give out anything above rtprio ~20 (or was it 30) by default, I think it would be a valuable addition to jackd. Reference: http://fluidsynth.svn.sourceforge.net/viewvc/fluidsynth/trunk/fluidsynth/src/bindings/fluid_rtkit.c http://fluidsynth.svn.sourceforge.net/viewvc/fluidsynth/trunk/fluidsynth/src/bindings/fluid_rtkit.h > That would mean changing the post configuration of jackd > installation package, wich create the "audio" settings/entries for real > time use. If you think this is compulsory, then, it is easy to do it: > ask the jackd maintainer to change the group name, I and other update > their documentation and it's done. Are you talking about Debian's pkg-multimedia-maintainers, or the jack2 upstream developers at jackaudio.org? > To "fine tune", a dedicated possibility should be added to "User and > Group Manager Privileges" GUI, and maybe the "Use audio devices" should > be renamed for "Use audio devices on remote connection" or something > like that. True, I've already suggested that but it seems stuck in bureaucracy: https://bugs.launchpad.net/bugs/616998 -- David Henningsson, Canonical Ltd. http://launchpad.net/~diwic -- Ubuntu-Studio-devel mailing list [email protected] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-studio-devel
