From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pap Peti Subject: Re: [FFADO-devel] M-audio Audiophile Firewire Date: Wed, 26 Oct 2016 21:03:20 +0200 Message-ID: References: <1f6dd683-f550-651b-93d2-87560dd298ff@sakamocchi.jp> <7f5bc2fc-7e45-2577-9286-be0e2ff74228@sakamocchi.jp> <20161023224350.GB12315@marvin.atrad.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wm0-f41.google.com (mail-wm0-f41.google.com [74.125.82.41]) by alsa0.perex.cz (Postfix) with ESMTP id 8C8402671EC for ; Wed, 26 Oct 2016 21:03:24 +0200 (CEST) Received: by mail-wm0-f41.google.com with SMTP id 140so33414580wmv.0 for ; Wed, 26 Oct 2016 12:03:24 -0700 (PDT) In-Reply-To: <20161023224350.GB12315@marvin.atrad.com.au> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Jonathan Woithe Cc: "alsa-devel@alsa-project.org" , ffado-devel@lists.sf.net List-Id: alsa-devel@alsa-project.org On 2016-10-24 00:43, Jonathan Woithe wrote: > On Sun, Oct 23, 2016 at 08:22:32PM +0200, Peti Pap wrote: >> I installed now an Ubuntu 16.10 (because this distro can handle ffado 2.3 >> well), and now almost work the playback (but sometimes a bit noisy, and I >> dont know the reason). >> When I start the FFADO Mixer from terminal, I get the following messages: >> >> Cannot create RT messagebuffer thread: Operation not permitted (1) >> Retrying messagebuffer thread without RT scheduling >> Messagebuffer not realtime; consider enabling RT scheduling for user > This indicates that your user does not have access to the realtime > scheduling features on the system. While this should not affect the > operation of ffado-mixer (and its related ffado-dbus-server), it will cause > problems if you choose to use the FFADO audio streaming system via jackd's > "firewire" backend. From the above message I'm not sure if you're doing > this though: the "noisy" playback might still be relating to your use of the > ALSA streaming driver. > > On most distributions it is sufficient to add your user to the "audio". > > Not having access to the realtime scheduling shouldn't cause ffado-mixer any > problem. However, just to be sure it's probably worth adding your user to > the audio group to see if that improves the ffado-mixer behaviour. > >> ----------------------------------------------- >> FFADO Control DBUS service >> Part of the FFADO project -- www.ffado.org >> Version: 2.3.0- >> (C) 2008, Pieter Palmers >> This program comes with ABSOLUTELY NO WARRANTY. >> ----------------------------------------------- >> >> 1477244892717343: (ffado-dbus-server.cpp)[ 270] main: Discovering >> devices... >> 03966254548: (ffado-dbus-server.cpp)[ 329] main: DBUS service running >> 03966254588: (ffado-dbus-server.cpp)[ 330] main: press ctrl-c to stop it & >> exit >> 03966254597: Debug (ffado-dbus-server.cpp)[ 333] main: dispatching... >> 03970152237: Error (avc_avdevice.cpp)[ 300] supportsSamplingFrequency: >> sample rate not supported by input plug > I'm not sure what would cause this. Was the device actively streaming audio > at the time you started ffado-dbus-server? That still shouldn't cause any > issues, but obviously something is amiss. > >> (And if I close the mixer GUI, I cant re-open again without killing the >> ffado-dbus-server) > That's strange. Something seems to be getting hung up somewhere. > > Peti: to keep the original thread in alsa-devel on topic, you may like to > subscribe to ffado-devel and start a fresh thread there about the > above ffado-mixer / ffado-dbus-server issues you are seeing. > > Regards > jonathan