Hi Clemens, > grep bandwidth /var/log/* >or for recent messages only: > dmesg | grep bandwidth ... don't get any error messages here. >The bug I'm thinking about was fixed in 3.0.13; the current stable >kernel version is 3.2.7. A newer kernel might be available through >online updates, if Ubuntustudio has them. I downloaded and installed the kernel 3.0.13: uname -vrs Linux 3.0.13-030013-generic #201112091235 SMP Fri Dec 9 17:35:57 UTC 2011 Now, trying to start jack still fails: ~$ sudo jackd -dalsa -dhw:2,0 -r48000 -p1024 -n2 jackdmp 1.9.7 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2011 Grame. jackdmp 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 no message buffer overruns no message buffer overruns JACK server starting in realtime mode with priority 10 control device hw:2 control device hw:2 audio_reservation_init Acquire audio card Audio2 creating alsa driver ... hw:2,0|hw:2,0|1024|2|48000|0|0|nomon|swmeter|-|32bit control device hw:2 configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods ALSA: final selected sample format for capture: 24bit little-endian ALSA: use 2 periods for capture ALSA: final selected sample format for playback: 24bit little-endian ALSA: use 2 periods for playback ALSA: cannot set hardware parameters for playback ALSA: cannot configure playback channel Cannot initialize driver JackServer::Open() failed with -1 Failed to open server Or trying it with '-dhw:2' instead of '-dhw:2,0' ~$ sudo jackd -dalsa -dhw:2 -r48000 -p1024 -n2 jackdmp 1.9.7 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2011 Grame. jackdmp 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 no message buffer overruns no message buffer overruns JACK server starting in realtime mode with priority 10 control device hw:2 control device hw:2 audio_reservation_init Acquire audio card Audio2 creating alsa driver ... hw:2|hw:2|1024|2|48000|0|0|nomon|swmeter|-|32bit control device hw:2 configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods ALSA: final selected sample format for capture: 24bit little-endian ALSA: use 2 periods for capture ALSA: final selected sample format for playback: 24bit little-endian ALSA: use 2 periods for playback ALSA: prepare error for playback on "hw:2" (Broken pipe) Cannot start driver JackServer::Start() failed with -1 Failed to start server control device hw:2 Released audio card Audio2 audio_reservation_finish control device hw:2 sela ------------------------------ >Message: 3 >Date: Mon, 27 Feb 2012 17:15:57 +0100 >From: Clemens Ladisch <cladisch@xxxxxxxxxxxxxx> >Subject: Re: US-122: permanent problem on ubuntustudio > 11.10 >To: alsa-user@xxxxxxxxxxxxxxxxxxxxx >Message-ID: <4F4BAC3D.4010609@xxxxxxxxxxxxxx> >Content-Type: text/plain; charset=us-ascii > >Fabio Sela wrote: >>> Which kernel version? Try the latest update. >> >> ~$ uname -vrs >> Linux 3.0.0-16-generic #28-Ubuntu SMP Fri Jan 27 17:44:39 UTC 2012 >> I downloaded the latest version of Ubuntustudio 11.10 only recently (a >> couple of weeks ago) and installed it right-away from DVD. Should I >> still go for a newer one (is there)? > >The bug I'm thinking about was fixed in 3.0.13; the current stable >kernel version is 3.2.7. A newer kernel might be available through >online updates, if Ubuntustudio has them. > >>> Check the system log for bandwidth error messages. >> >> Can you give me a hint how to look for that? > > grep bandwidth /var/log/* >or for recent messages only: > dmesg | grep bandwidth > >The message would be something like "cannot submit datapipe ... not >enough bandwidth". > > >Regards, >Clemens ------------------------------- >2012/2/27 Fabio Sela <fabiosela@xxxxxx>: > Clemens, > >> Which kernel version? Try the latest update. > > ~$ uname -vrs > Linux 3.0.0-16-generic #28-Ubuntu SMP Fri Jan 27 17:44:39 UTC 2012 > > I downloaded the latest version of Ubuntustudio 11.10 only recently (a > couple of weeks ago) and installed it right-away from DVD. Should I > still go for a newer one (is there)? > >> Check the system log for bandwidth error messages. > > Can you give me a hint how to look for that? > I never worked on the logfiles, but would it be e.g. like 'cat > /var/log/syslog | grep bandwidth' ? Only that does not give me any > interesting error-messages: > > /var/log$ cat syslog | grep bandwidth > Feb 21 07:52:09 ubuntu kernel: [ 14.083499] cfg80211: > (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > Feb 21 09:44:05 ubuntu kernel: [ 8.150424] cfg80211: > (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > Feb 21 10:22:35 ubuntu kernel: [ 11.913162] cfg80211: > (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > Feb 23 22:07:08 ubuntu kernel: [ 12.798987] cfg80211: > (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > Feb 24 08:08:06 ubuntu kernel: [ 12.102207] cfg80211: > (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > Feb 25 22:16:57 ubuntu kernel: [ 11.981356] cfg80211: > (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > Feb 25 22:18:32 ubuntu kernel: [ 11.614490] cfg80211: > (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > Feb 25 23:48:45 ubuntu kernel: [ 11.756647] cfg80211: > (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > Feb 27 07:58:20 ubuntu kernel: [ 12.180472] cfg80211: > (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) > > Stefan > > 2012/2/27 Clemens Ladisch <cladisch@xxxxxxxxxxxxxx>: >> Fabio Sela wrote: >>> I have been trying to get my Tascam US-122 USB Audio interface running >>> on Ubuntustudio 11.10 >> >> Which kernel version? Try the latest update. >> >>> ALSA: cannot set hardware parameters for playback >>> ... >>> 00:1a.0 USB Controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 05) >> >> Probably an EHCI driver bug. >> Check the system log for bandwidth error messages. >> >>> When I start alsamixer and select the usx2y sound-device, I get the >>> message: " This sound device does not have any controls." >> >> This is OK for devices that actually do not have any software- >> controllable controls. >> >> >> Regards, >> Clemens ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. 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