[LAU] could not start jack - already registered problem

[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.


--
Patrick Shirkey
Boost Hardware Ltd