KXstudio i'm experiencing some problems..

[hellalive]

Hi all, I recently upgraded my ubuntu 10.04 audio system to full kxstudio (gnome) - i was using only some PPA's but i thought it could have been better adding the others, and it is. Apps like klaudia, claudia etc are GREAT! I'm using reltime kernel right now, i get some xruns here and there (mainly with MIDI) but it's fine; my system is: AMD phenom II X6 3.2 GHz, RAM 4 GB, nvidia gt220, and as audio interface i'm with an M-audio fast track USB - i'd like to upgrade to a delta, maybe 1010 in some time.
So, there are some problems i cannot seem to solve:

1) I can't open alsamixer. I tried to reinstall ALSA and alsa-utils, everything is here (links, libraries, etc) but it says "no such file or directory". I found no solution online, so maybe you can help me..
2) Qtractor loads but crashes in like 1 sec..tried both the standard and SVN version, no way it can go. I had it working for some time..
3) Sometimes the fast track does not load at startup, and this means jack does not load and it's quite annoying.
4) Sometimes i get problems with MIDI - using zynadd or some other app causes xruns at some point and the sound starts crackilng and i have to kill jackdbus in order to get everything back together working.
5) So, sometimes i have then to restart jack. If i do this with jack2simpleconfig it goes ok, but if i do this from qjackcontrol klaudia does not load saying that jack is not started - but it doesn't happend all the times. Plus, settings for jack are not the same in jack2simpleconfig and qjackcontrol - if i change something in one program the other one does not change.

Hope you can help me..I'd rather not reinstall the whole thing.

[hellalive]

Thank you Falk, you're incredibly fast for support!

So, here we go.

1) You won't belive this, but when i typed this:

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federico@federico-studio:~$ dpkg -L alsa-utils
/.
/usr
/usr/share
/usr/share/alsa
/usr/share/alsa/init
/usr/share/alsa/init/00main
/usr/share/alsa/init/default
/usr/share/alsa/init/help
/usr/share/alsa/init/info
/usr/share/alsa/init/test
/usr/share/alsa/init/hda
/usr/share/alsa/speaker-test
/usr/share/alsa/speaker-test/sample_map.csv
/usr/share/man
/usr/share/man/man1
/usr/share/man/man1/amixer.1.gz
/usr/share/man/man1/amidi.1.gz
/usr/share/man/man1/aplay.1.gz
/usr/share/man/man1/iecset.1.gz
/usr/share/man/man1/aconnect.1.gz
/usr/share/man/man1/aplaymidi.1.gz
/usr/share/man/man1/arecordmidi.1.gz
/usr/share/man/man1/aseqdump.1.gz
/usr/share/man/man1/aseqnet.1.gz
/usr/share/man/man1/alsactl.1.gz
/usr/share/man/man1/alsamixer.1.gz
/usr/share/man/man1/speaker-test.1.gz
/usr/share/man/man7
/usr/share/sounds
/usr/share/sounds/alsa
/usr/share/sounds/alsa/Front_Left.wav
/usr/share/sounds/alsa/Rear_Center.wav
/usr/share/sounds/alsa/Rear_Right.wav
/usr/share/sounds/alsa/Side_Right.wav
/usr/share/sounds/alsa/Front_Center.wav
/usr/share/sounds/alsa/Front_Right.wav
/usr/share/sounds/alsa/Noise.wav
/usr/share/sounds/alsa/Rear_Left.wav
/usr/share/sounds/alsa/Side_Left.wav
/usr/share/doc
/usr/share/doc/alsa-utils
/usr/share/doc/alsa-utils/README.Debian
/usr/share/doc/alsa-utils/copyright
/usr/share/doc/alsa-utils/PATCHES.Debian
/usr/share/doc/alsa-utils/README.init.cs4236
/usr/share/doc/alsa-utils/NEWS.Debian.gz
/usr/share/doc/alsa-utils/changelog.gz
/usr/share/doc/alsa-utils/changelog.Debian.gz
/usr/sbin
/usr/bin
/usr/bin/alsamixer
/usr/bin/amixer
/usr/bin/amidi
/usr/bin/aplay
/usr/bin/iecset
/usr/bin/speaker-test
/usr/bin/aconnect
/usr/bin/aplaymidi
/usr/bin/arecordmidi
/usr/bin/aseqdump
/usr/bin/aseqnet
/sbin
/sbin/alsactl
/sbin/alsa-utils
/lib
/lib/udev
/lib/udev/rules.d
/lib/udev/rules.d/80-alsa.rules
/lib/udev/alsa-utils
/var
/var/lib
/var/lib/alsa
/etc
/etc/init
/etc/init/alsa-mixer-save.conf
/etc/init.d
/usr/share/man/man1/arecord.1.gz
/usr/bin/arecord
/etc/init.d/alsa-mixer-save

After reeading the output i typed alsamixer and it appeared. It didn't show for like a week..LOL. Solved!

2)

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federico@federico-studio:~$ qtractor
Warning: no translation found for 'it_IT' locale: /usr/share/qt4/translations/qt_it_IT.qm
Warning: no translation found for 'it_IT' locale: /usr/share/locale/qtractor_it_IT.qm
qtractorPluginPath[0x7fff64a07040]::open() paths="/usr/lib64/lv2" typeHint=4
qtractorLv2PluginType::slv2_open()
[Thread debugging using libthread_db enabled]
0x00007f2cf5c9844e in waitpid () from /lib/libpthread.so.0

Thread 1 (Thread 0x7f2cf9b3b760 (LWP 2484)):
#0  0x00007f2cf5c9844e in waitpid () from /lib/libpthread.so.0
#1  0x00000000004336ea in ?? ()
#2  <signal handler called>
#3  0x00007f2cf51d5e2d in free () from /lib/libc.so.6
#4  0x00007f2ce66fd9b2 in _naladspa_lrdf_free_data ()
   from /usr/lib/lv2/naspro-ladspa.lv2/ladspa.so
#5  0x00007f2ce66fd3cc in _naladspa_descriptor_free_data ()
   from /usr/lib/lv2/naspro-ladspa.lv2/ladspa.so
#6  0x00007f2ce66ff0b4 in _naladspa_pluglib_unload_all ()
   from /usr/lib/lv2/naspro-ladspa.lv2/ladspa.so
#7  0x00007f2ce66fef8b in ?? () from /usr/lib/lv2/naspro-ladspa.lv2/ladspa.so
#8  0x00007f2ce66fd34f in ?? () from /usr/lib/lv2/naspro-ladspa.lv2/ladspa.so
#9  0x00007fff64a05f60 in ?? ()
#10 0x0000000000000034 in ?? ()
#11 0x00007fff64a06b00 in ?? ()
#12 0x00007f2ce66ff621 in _fini ()
   from /usr/lib/lv2/naspro-ladspa.lv2/ladspa.so
#13 0x0000000001a4c5b0 in ?? ()
#14 0x00007f2cf9967822 in ?? () from /lib64/ld-linux-x86-64.so.2
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
 

Well, seems you were right. What to do then?

3) I just don't know. It's USB and it still gets powered when i shut down the PC but not power off the power supply - but switching it off or leaving it on doesn't matter, for what i have seen. Legacy disabled, didn't change a thing. Changed USB port, same. On another Ubuntu installation on the same PC - natty - happens too so i guess it's some kernel problem, but don't know. I rarely use the interface with the standard ubuntu installation, so i had never noticed it was loaded totally random. By the way, when it doesn't load i get some error messages at startup with RT kernel (and if i have to say i get always some error message about ACPI index not assigned or already assigned).

4) This is strange. Maybe i have some unusual problem with the ALSA driver, as the mixer didn't want to be loaded. It happens with ordinary latency - 256 period buffer; ardour and other non-midi programs do not give me particular xruns (if not while loading some terrible project) at the same settings, don't know why.

5) Well, I'll use the other programs to start jack. And this is solved too

[paldepind]

Qtractor doesn't work for me either in KX Studio. However my output if different:

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[simon@simon-HP-Pavilion-dv5-Notebook-PC Documents]$ qtractor 
Warning: no translation found for 'en_US' locale: /usr/share/qt4/translations/qt_en_US.qm
Warning: no translation found for 'en_US' locale: /usr/share/locale/qtractor_en_US.qm
qtractorPluginPath[0x7fffadaf64f0]::open() paths="/usr/lib/lv2:/usr/local/lib/lv2:/home/simon/.lv2" typeHint=4
qtractorLv2PluginType::slv2_open()
Could not attach to process.  If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
ptrace: Operation not permitted.

What is wrong?

[hellalive]

Well, falk will know

So, here's how it continues:

2) ok, it starts nicely but i had to remove the plugin metapackages - can it be a problem for updates?

3) I tried to disable the internal soundcard and it happend - one time in 4 reboots, so i re-enabled it. The fast track is a small soundcard, but it's very useful for recording guitar and bass to the PC. Well, if i logout right after boot plugging it out then in again, everything is fine. I run

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sudo /etc/init.d/rtirq restart

after doing this so it should not be the main problem behind point 4...or not? Also, here's my output of the rtirq thing:

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federico@federico-studio:~$ sudo /etc/init.d/rtirq restart 
Setting IRQ priorities: start [rtc] irq=8 pid=198 prio=90: OK.
Setting IRQ priorities: start [HDA NVidia] irq=18 pid=988 prio=80: OK.
Setting IRQ priorities: start [HDA ATI SB] irq=16 pid=982 prio=79: OK.
Setting IRQ priorities: start [ohci_hcd] irq=18 pid=188 prio=75: OK.
Setting IRQ priorities: start [ohci_hcd] irq=18 pid=190 prio=74: OK.
Setting IRQ priorities: start [ohci_hcd] irq=18 pid=192 prio=73: OK.
Setting IRQ priorities: start [ohci_hcd] irq=18 pid=194 prio=72: OK.
Setting IRQ priorities: start [ehci_hcd] irq=17 pid=182 prio=75: OK.
Setting IRQ priorities: start [ehci_hcd] irq=17 pid=184 prio=74: OK.
Setting IRQ priorities: start [ehci_hcd] irq=17 pid=186 prio=73: OK.
Setting IRQ priorities: start [i8042] irq=1 pid=197 prio=70: OK.
Setting IRQ priorities: start [i8042] irq=12 pid=196 prio=69: OK.
federico@federico-studio:~$ 

Here's lsusb

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federico@federico-studio:~$ lsusb
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 002: ID 0763:2010 Midiman M-Audio Fast Track
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 050d:705e Belkin Components 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

And there's federico@federico-studio:~$ cat /proc/asound/cards

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 0 [SB             ]: HDA-Intel - HDA ATI SB
                      HDA ATI SB at 0xfcef4000 irq 16
 1 [Track          ]: USB-Audio - Fast Track
                      M-Audio Fast Track at usb-0000:00:13.0-3, full speed
 2 [NVidia         ]: HDA-Intel - HDA NVidia
                      HDA NVidia at 0xfe97c000 irq 18

i assume my soundcard is on bus 5, irq 18. It has priority 75 i suppose, so what should i do to give it like 81? Can this be a contribute to problem 4?

[paldepind]

I think this problem is related to the new lilv libs (crashy).

please try:

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export LV2_PATH=
qtractor

Sorry, that didn't work. I still get the same error message.

[Pablo]

It has priority 75 i suppose, so what should i do to give it like 81?

I think this will do the trick:
Edit /etc/default/rtirq and change the order of "snd" and "usb" in RTIRQ_NAME_LIST, so that usb audio devices have greater priority than pci audio devices.

[hellalive]

Thanks all! Pablo, i did it and seems ok but i still get some xruns with midi wich i suppose shouldn't be here. Well, i'll let you know when i'll have time.

[hellalive]

So, I have to say that now my system is way more stable than before and i've got everything working well - as for now no strange crashes.

one thing that is some strange is the behaviour of fluidsynth, sometimes the standalone doesn't output sound..then at some point you get it. Did anyone experince this?

[hellalive]

So, double post. I have experienced some crashes with rosegarden using sineshaper - it gives xrun and crashes when loaded in rosegarden. I updated today some stuff, and i reinstalled and the meta's i removed previously then removed again the naspro...just to be shure. Oh, and ubufox seems to have some issues after updating to firefox 5 - i simply removed it, but i just thought i let you know falk.

[Ross jeremy]

After reading your post i have a better understanding about this.Your post have the information that is helpful and very informative. I would like you to keep up the good work.You know how to make your post understandable for most of the people.Thumbs up and Thanks.

[Raul]

It has priority 75 i suppose, so what should i do to give it like 81?

I think this will do the trick:
Edit /etc/default/rtirq and change the order of "snd" and "usb" in RTIRQ_NAME_LIST, so that usb audio devices have greater priority than pci audio devices.

Hello all,
My laptop detect "c-media USB audio" on volume control, but when I select it, I still have got the sound on the internal speakers. Pablo, I tried your trick; now when I plug the USB speakers in the volume control selects "c-media USB audio (Alsa mixer)" automatically, but sill no sound there...

Using KXstudio 11.04 Unity
Thanks and sorry for my english...

[hellalive]

Are you working with jack? You should select the right interface in jack settings and not in pulseaudio.

[Raul]

Ok, thanks, but I'm a kind of ignorant...

Yes, in KXStudio JACK is used as "audio master", and all other audio apps will output to it.
Once JACK is configured properly (use 'Cadence'), you'll then have sound in all apps output to the right place.

I know this, but what must I configure in Cadence to get the USB speakers working? There are not in the "Device" list on the "Driver" tab... musted be there?

Thanks and please be patient... I hope to be better with music than with the computer

[Raul]

That was ok, Falk, thanks a lot.
SOLVED!