Re: [LAU] could not start jack - already registered problem

Am 24.04.2013 17:15, schrieb Johannes Kroll: > On Wed, 24 Apr 2013 16:10:56 +0200 > Hartmut Noack <zettberlin(a)linuxuse.de> wrote: > >> Am 24.04.2013 15:51, schrieb Len Ovens: >>> >>> On Wed, April 24, 2013 6:26 am, Hartmut Noack wrote: >>>> Hello, >>>> >>>> I run KXStudio on Ubuntu 12.10 on a Lenovo Ideapad with a MAudio >>>> Mobile >>>> Pre USB1 interface. >>>> >>>> Normaly all this works near perfection but there is a problem >>>> starting >>>> Jack: >>>> >>> >>>> Tue Apr 23 09:58:52 2013: ERROR: cannot register object path >>>> "/org/freedesktop/ReserveDevice1/Audio2": A handler is already >>>> registered for /org/freedesktop/ReserveDevice1/Audio2 >>>> Tue Apr 23 09:58:52 2013: ERROR: Failed to acquire device name : >>>> Audio2 >>>> error : A handler is already registered for >>>> /org/freedesktop/ReserveDevice1/Audio2 >>> >>> Ok, so what application already has the audio port? Are you running >>> an >>> audio or video player? Have you been using a web browser that was >>> seeing a >>> video or just hit a page with video adds? >>> >>> To put it another way, does this problem show up right after a fresh >>> login? >> >> Exactly: after a fresh login. >> >>> or only after having used the system for a while. What does your >>> desktop use for most of it's non-jack audio output? >> >> Before I do anything else, I check if Jack is running. Browser, Skype >> and the like use Pulse Jack sink, so I let Cadence start pulse-jack >> after starting Jack. > > The command "lsof /dev/snd/pcm*" should show a list of commands which > are using any sound cards. Try it the next time the problem shows up. Right now I have go the situation: +++++++++++++++++++++++++++++++++++++++++++++++++++++++ zettberlin@zettberlin-Lenovo-U410:~$ lsof /dev/snd/pcm* zettberlin@zettberlin-Lenovo-U410:~$ cat /proc/asound/cards 0 [Loopback ]: Loopback - Loopback Loopback 1 1 [PCH ]: HDA-Intel - HDA Intel PCH HDA Intel PCH at 0xeb610000 irq 46 2 [MobilePre ]: USB-Audio - MobilePre M Audio MobilePre at usb-0000:00:14.0-2, full speed +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Thu Apr 25 08:29:57 2013: JACK server starting in realtime mode with priority 10 Thu Apr 25 08:29:57 2013: ERROR: cannot register object path "/org/freedesktop/ReserveDevice1/Audio2": A handler is already registered for /org/freedesktop/ReserveDevice1/Audio2 Thu Apr 25 08:29:57 2013: ERROR: Failed to acquire device name : Audio2 error : A handler is already registered for /org/freedesktop/ReserveDevice1/Audio2 Thu Apr 25 08:29:57 2013: ERROR: Audio device hw:MobilePre,0 cannot be acquired... Thu Apr 25 08:29:57 2013: ERROR: Cannot initialize driver Thu Apr 25 08:29:57 2013: ERROR: JackServer::Open failed with -1 Thu Apr 25 08:29:57 2013: ERROR: Failed to open server Thu Apr 25 08:30:04 2013: ------------------ Thu Apr 25 08:30:04 2013: Controller activated. Version 1.9.9.5 (unknown) built on Sat Dec 22 19:50:40 2012 Thu Apr 25 08:30:04 2013: Loading settings from "/home/zettberlin/.config/jack/conf.xml" using expat_2.1.0 ... Thu Apr 25 08:30:04 2013: setting parameter 'engine':'driver':'(null)' to value "alsa" Thu Apr 25 08:30:04 2013: setting parameter 'engine':'realtime':'(null)' to value "true" Thu Apr 25 08:30:04 2013: setting parameter 'engine':'verbose':'(null)' to value "false" Thu Apr 25 08:30:04 2013: setting parameter 'engine':'client-timeout':'(null)' to value "1000" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'device' to value "hw:2" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'capture' to value "hw:MobilePre,0" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'playback' to value "hw:MobilePre,0" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'rate' to value "48000" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'period' to value "256" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'nperiods' to value "3" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'hwmon' to value "false" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'hwmeter' to value "false" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'duplex' to value "true" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'softmode' to value "true" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'monitor' to value "false" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'dither' to value "n" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'shorts' to value "true" Thu Apr 25 08:30:04 2013: setting parameter 'drivers':'alsa':'midi-driver' to value "seq" Thu Apr 25 08:30:04 2013: Listening for D-Bus messages Thu Apr 25 08:30:04 2013: Starting jack server... Thu Apr 25 08:30:04 2013: JACK server starting in realtime mode with priority 10 Thu Apr 25 08:30:05 2013: Acquired audio card Audio2 Thu Apr 25 08:30:05 2013: creating alsa driver ... hw:MobilePre,0|hw:MobilePre,0|256|3|48000|0|0|nomon|swmeter|soft-mode|16bit Thu Apr 25 08:30:05 2013: Using ALSA driver USB-Audio running on card 2 - M Audio MobilePre at usb-0000:00:14.0-2, full speed Thu Apr 25 08:30:05 2013: configuring for 48000Hz, period = 256 frames (5.3 ms), buffer = 3 periods Thu Apr 25 08:30:05 2013: ALSA: final selected sample format for capture: 16bit little-endian Thu Apr 25 08:30:05 2013: ALSA: use 3 periods for capture Thu Apr 25 08:30:05 2013: ERROR: ALSA: cannot set hardware parameters for capture Thu Apr 25 08:30:05 2013: ERROR: ALSA: cannot configure capture channel Thu Apr 25 08:30:05 2013: ERROR: Cannot initialize driver Thu Apr 25 08:30:05 2013: ERROR: JackServer::Open failed with -1 Thu Apr 25 08:30:05 2013: ERROR: Failed to open server ############################################################## Now I unplug the Mobile Pre.... Replug it And: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Thu Apr 25 08:34:19 2013: ------------------ Thu Apr 25 08:34:19 2013: Controller activated. Version 1.9.9.5 (unknown) built on Sat Dec 22 19:50:40 2012 Thu Apr 25 08:34:20 2013: Loading settings from "/home/zettberlin/.config/jack/conf.xml" using expat_2.1.0 ... Thu Apr 25 08:34:20 2013: setting parameter 'engine':'driver':'(null)' to value "alsa" Thu Apr 25 08:34:20 2013: setting parameter 'engine':'realtime':'(null)' to value "true" Thu Apr 25 08:34:20 2013: setting parameter 'engine':'verbose':'(null)' to value "false" Thu Apr 25 08:34:20 2013: setting parameter 'engine':'client-timeout':'(null)' to value "1000" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'device' to value "hw:2" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'capture' to value "hw:MobilePre,0" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'playback' to value "hw:MobilePre,0" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'rate' to value "48000" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'period' to value "256" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'nperiods' to value "3" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'hwmon' to value "false" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'hwmeter' to value "false" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'duplex' to value "true" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'softmode' to value "true" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'monitor' to value "false" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'dither' to value "n" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'shorts' to value "true" Thu Apr 25 08:34:20 2013: setting parameter 'drivers':'alsa':'midi-driver' to value "seq" Thu Apr 25 08:34:20 2013: Listening for D-Bus messages Thu Apr 25 08:34:20 2013: Starting jack server... Thu Apr 25 08:34:20 2013: JACK server starting in realtime mode with priority 10 Thu Apr 25 08:34:20 2013: Acquired audio card Audio2 Thu Apr 25 08:34:20 2013: creating alsa driver ... hw:MobilePre,0|hw:MobilePre,0|256|3|48000|0|0|nomon|swmeter|soft-mode|16bit Thu Apr 25 08:34:20 2013: Using ALSA driver USB-Audio running on card 2 - M Audio MobilePre at usb-0000:00:14.0-2, full speed Thu Apr 25 08:34:20 2013: configuring for 48000Hz, period = 256 frames (5.3 ms), buffer = 3 periods Thu Apr 25 08:34:20 2013: ALSA: final selected sample format for capture: 16bit little-endian Thu Apr 25 08:34:20 2013: ALSA: use 3 periods for capture Thu Apr 25 08:34:20 2013: ALSA: final selected sample format for playback: 16bit little-endian Thu Apr 25 08:34:20 2013: ALSA: use 3 periods for playback Thu Apr 25 08:34:20 2013: port created: Midi-Through:midi/playback_1 Thu Apr 25 08:34:20 2013: port created: Midi-Through:midi/capture_1 Thu Apr 25 08:34:20 2013: graph reorder: new port 'system:capture_1' Thu Apr 25 08:34:20 2013: New client 'system' with PID 0 Thu Apr 25 08:34:20 2013: graph reorder: new port 'system:capture_2' Thu Apr 25 08:34:20 2013: graph reorder: new port 'system:playback_1' Thu Apr 25 08:34:20 2013: graph reorder: new port 'system:playback_2' Thu Apr 25 08:34:20 2013: graph reorder: new port 'system:midi_capture_1' Thu Apr 25 08:34:20 2013: graph reorder: new port 'system:midi_playback_1' ################################################################ Please, people! Is there nobody out there who could say, what is registering the Device? I guess, it has to do with dbus but I really would like to jump straight to the core of the problem, learning all mysteries of dbus/freedesktop/Jackdbus whatever is not an option for me. So if anybody could point me to that spurious registering-process it would be most appreciated :-)