[LAU] could not start jack - already registered problem

david gnome at hawaii.rr.com
Thu Apr 25 18:57:53 UTC 2013
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On 04/25/2013 06:32 AM, Markus Seeber wrote:
> On 04/25/2013 03:33 PM, Hartmut Noack wrote:
>> Am 25.04.2013 13:27, schrieb Patrick Shirkey:
>>> On Thu, April 25, 2013 8:14 pm, Hartmut Noack wrote:
>>>> Am 25.04.2013 09:56, schrieb Patrick Shirkey:
>>>>> On Thu, April 25, 2013 4:40 pm, Hartmut Noack wrote:
>>>>>> Am 24.04.2013 17:15, schrieb Johannes Kroll:
>>>>>>> On Wed, 24 Apr 2013 16:10:56 +0200
>>>>>>> Hartmut Noack <zettberlin at 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 at zettberlin-Lenovo-U410:~$ lsof /dev/snd/pcm*
>>>>>> zettberlin at 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 :-)
>>>>>>
>>>>>
>>>>> You might have better luck with this one on the PA mailing list.
>>>> So you suspect PA (and not dbus) to be the registering spectre?
>>>>
>>>> If I remember correctly I have tried some PA-voodoo also. Such as
>>>> killall -9 pulseaudio. But to no avail.
>>>>
>>>> Anyway thanks for the hint: I will try once more to find out,
>>>> whether PA
>>>> has the custom to "register" handlers for
>>>> /org/freedesktop/ReserveDevice1/Audio2
>>>>
>>>
>>> You can try adding
>>>
>>>    autospawn = no
>> This is in the file already, guess KXStudio does it automagically. And
>> it looks like it works, PA never starts automatically and it does not
>> respawn as I kill it.
>>
>> In fact I do not believe, that the problem is directly related to
>> pulse...
>>
>>> to
>>>
>>>     ~/.pulse/client.conf
>>>
>>>
>>> This is reminiscent of the other pulse bug.
>>>
>>>
>>>
>>> --
>>> Patrick Shirkey
>>> Boost Hardware Ltd
>>>
>>>
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user at lists.linuxaudio.org
>> http://lists.linuxaudio.org/listinfo/linux-audio-user
>>
> I stumbled over the same issue a while ago but i can't reproduce the
> exact issue at the moment. I noticed, you are using Skype at the same
> time? Actually Skype doesn't support Jack and tries to do strange stuff
> sometimes, which inevitably breaks things on my system, because it
> aggressively tries to obtain access to the audio card somehow. The only
> way i discovered to free the device, is to stop Skype, start pulse
> audio, and kill pulseaudio afterwards. I try to avoid Skype now as much
> as possible, when i am Using Jack, because i couldn't get it working in
> a reliable way with the pulseaudio bridge.
> Basically i guess Skype is causing you problems.

Or it's Pulse causing the problems. I don't use either Skype or Pulse.

-- 
David
gnome at hawaii.rr.com
authenticity, honesty, community
http://clanjones.org/david/
http://dancing-treefrog.deviantart.com/
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