Linux-audio-dev

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[linux-audio-dev] International Linux Audio Conference 2005 (LAC05): Call for Papers and more

by Frank NEUMANN

Hi list, as had been announced here earlier, the 3rd International Linux Audio Conference (or "LAC05" for short) will take place on April 21st-24th, 2005, again at the ZKM (Zentrum fuer Kunst und Medientechnologie, Center for Arts and Media Technology) in Karlsruhe, Germany. The organizers are now happy to send out the Call for Papers, Call for Music and more. We have prepared a web site containing all the details, including the text of the Calls, submission instructions, mailing list/contact addresses and more here: http://www.zkm.de/lac The website is not fully equipped yet (e.g., the templates for Papers have not been finished, and registration is not yet possible), but this will be added in the next weeks. Please watch the "News" page for up to date information. Compared to the last 2 years, we have changed several points. With the conference growing both in numbers of talks and visitors, certain things need to be planned more precisely in advance. That is why we now have a review process for papers and mandatory registration (as well as some other smaller changes, see the web page for details). We hope that you will agree that this is only for the better. We hope for a lot of interesting and entertaining papers and talks, and look forward to meet you (again :-) in April 2005. One detail we can reveal already now is that we could "hire" Fernando Lopez-Lezcano to hold the keynote. If you know of other interested parties - local user groups, composers, other mailing lists or individuals - please forward this mail wherever appropriate. If you have any kind of questions about the conference or this call, please don't hesitate to contact us at: lac2005 _at_ zkm _dot_ de. Thanks for reading, The LAC05 organization team: Goetz Dipper (ZKM) Matthias Nagorni Frank Neumann -------------------------------------------------------------------------- LAC 2005 Calls ============== Call for Papers --------------- We invite submissions of papers addressing all areas of audio processing based on Linux and open source software. Papers can focus on technical, artistic or scientific issues and can target developers or users. This includes (but is not limited to) the following categories: * Computer Music * Music Production * Instruments * Drivers and Sound Architecture * Audio Distributions * Generic (Usage, Documentation etc.) The conference is held in English. In contrast to the last conferences we are asking you to submit elaborated papers rather than abstracts only, for the following reasons: * We are planning to publish conference proceedings (in print and online) and a conference CD. * Also, the conference has grown to such an extent that we have to limit the number of talks. All papers will be reviewed by a board of experts. Based on their recommendations the organization team will decide which talks will be accepted. If you want to present some work in progress rather than a complete paper, please consider the sections "Call for Project Notes" and "Call for Posters". Length of a paper is 4-8 pages. Papers should include an abstract (50-100 words). The abstract will be published separately on the conference website once the paper has been accepted. Also, papers should include up to 5 keywords. We are going to use these keywords to create an index of the proceedings. In general talks should take 20-30 minutes followed by 5 minutes discussion. If you think you need more time, please tell us. Please also notify us if you need a special technical setup. The technical standard setup will be: * microphone (head set) * projector with XVGA input (resolution 1024x768) * stereo speaker setup with mini jack input If you are not able to bring your laptop along with you, please notify us in advance. How to submit * File format is PDF. If you cannot produce PDF, contact us. Make use of the templates for paper formatting available at the web page. If this is not possible, please contact us. * See our check list to ensure that you do not forget to enclose all necessary information. * Send your paper and all necessary information until 10 Jan 2005 via email to this address: lac2005 at zkm dot de * You will be notified by 18 Feb 2005 whether your paper has been accepted. The reviewers may ask you to modify your paper in order to be accepted. The deadline for the final version is March 11, 2005. Important Dates 10 Jan 2005: Paper submission deadline 18 Feb 2005: Notification of acceptance 11 Mar 2005: Final version deadline 21 - 24 Apr 2005: Conference Call for Project Notes ---------------------- A project note is very similar to a paper, but does not need to be as elaborated and complete. Length of a project note is 2-4 pages. Project notes should include an abstract (50-100 words) and up to 5 keywords. In all other respects, the same criteria apply as for papers (see section "Call for Papers"). How to submit * File format is PDF. If you cannot produce PDF, contact us. Make use of the templates for paper formatting available at the web page. If this is not possible, please contact us. * See our check list to ensure that you do not forget to enclose all necessary information. * Send your project note and all necessary information until 10 Jan 2005 via email to this address: lac2005 at zkm dot de * You will be notified by 18 Feb 2005 whether your project note has been accepted. The reviewers may ask you to modify your project note in order to be accepted. The deadline for the final version is 11 Mar 2005. Important Dates * See dates for "Call for Papers" Call for Posters ---------------- With respect to their content poster presentations do not differ from regular talks: Posters can focus on technical, artistic or scientific issues and can target developers or users. See section "Call for Papers" for more info on this. Since we never had poster sessions up to now, here is a short description of what we are planning: Authors will bring a printed poster to be attached to a wall. There will be enough space to have about 10 posters presented simultaneously. Authors are expected to present their posters by short presentations (max 10 min), which they repeat several times during the whole poster session. A whole poster session will take 2 hours. People can walk around and freely choose which poster presentation to attend and can visit several presentations during the whole poster session. Two reasons why we decided to include poster sessions into the conference: * We can have more presentations in the same time * It allows for more "interactivity" with the audience Note: It is not planned that you use your laptop while presenting the poster. The poster will not be part of the conference proceedings. However you may additionally provide a paper or project note on your topic which will be included in the proceedings. See the section "Call for Papers" for more info (especially about the paper templates). The poster itself will be included on the conference CD and on the conference website. How to submit * File format is PDF. If you cannot produce PDF, contact us. There is no template for posters. * Add a separate abstract (ca 50-100 words). The abstract will be published on the conference website once the poster has been accepted. * Add a separate list of up to 5 keywords describing your poster. We are going to use these keywords to create an index for the conference CD and online. * See our check list to ensure that you do not forget to enclose all necessary information. * Send your poster and all necessary information until 10 Jan 2005 via email to this address: lac2005 at zkm dot de * All submissions will be reviewed by a board of experts. See section "Call for Papers" for more info on this. Important Dates * See dates for "Call for Papers" Call for Workshops/Tutorials ---------------------------- With respect to their content workshops do not differ from talks: Workshops can have technical focus as well as artistic or scientific focus. Workshops can be targeted to developers as well as users. See section "Call for Papers" for more info on this. Workshops will take place in seminar rooms. Attendance is limited to ca. 10 people. A workshop can take significantly longer than a talk (2-3 hours). We have already had workshops during the last conferences, but most of them were rather spontaneously initiated. We will still retain the possibility of spontaneous workshops, but additionally we would like to encourage people to submit carefully prepared workshops. You might submit a paper along with your workshop proposal. If accepted, the paper will be included in the conference proceedings. Make use of the paper templates (see section "Call for Papers"). How to submit * See our check list to ensure that you do not forget to enclose all necessary information. * Send an abstract (ca. 50-100 words), all necessary information and your (optional) paper until 10 Jan 2005 via email to this address: lac2005 at zkm dot de * The abstract will be published on the conference website once the workshop has been accepted. * All submissions will be reviewed by a board of experts. See section "Call for Papers") for more info on this. Important Dates * See dates for "Call for Papers" Call for BOFS ------------- "Birds Of a Feather Sessions" - among all the events during the conference, the BOFS will be the most spontaneous. So there is no deadline for BOFS submissions. A BOFS is a chance for like-minded users and/or developers to exchange experience and knowledge about a specific topic. This can happen in a public place like the ZKM cafe or in a seminar room (if available). If you like to suggest a topic for a BOFS, do not hesitate. Send an email to lac2005 at zkm dot de, include an abstract (50-100 words), a title for the BOFS, and possibly additional remarks. Call for Music -------------- There will be again some concerts during the conference. We are looking for music that has been produced completely or mostly under Linux and/or with open source software: * Interesting demos of sound synthesis, sound processing, etc. This should include a short talk/introduction to the technique used. * "Serious" compositions, to be played in a concert-like context * Electronica, Chill-Out, Ambient etc. If you want to participate, send your composition(s) to this address: Linux Sound Night ZKM | Institut fuer Musik und Akustik Lorenzstr. 19 D-76135 Karlsruhe Germany Make use of one of the following media formats: * Media: Audio-CD, DVD or CD-ROM * File formats: aiff or wav * Channels: mono, stereo or multi-channel * Samplerate: 44.1 or 48 kHz * Resolution: 16 or 24 bit Include the following items with your submission (in English): * Requirements (speaker setup, instruments etc.) * A filled-in and signed printout of the form available on the web. For the printed programme and to be published online and on the conference CD, in continuous text (no table or list please): * A short commentary on the compositions (ca. 150 words) * A short Curriculum Vitae (ca. 100 words) Deadline for submissions is 10 Jan 2005. A jury will select the compositions that will be performed/played. Furthermore, the jury will give out 3 prices to participants to contribute to their travel expenses. Besides artistic criteria and technical reasons, these criteria apply for the selection: * Tape pieces or pieces which are performed by the composer herself will generally have more chances to get included. * If we get more pieces than we can include in the programme, composers who are attending the conference are preferred. Terms and conditions for participation can be found in the form mentioned above. This form includes among other things: * I will receive no fees whether my composition is played or not. * GEMA fees (in case of performance) will be paid by ZKM. * The material I send to ZKM will not be returned. Additionally to this Call for Music, there will be an open stage called "Plug & Chill - The Linux Jam Night" at Saturday night (23 Apr 2005), where attendents of the conference are invited to perform their pieces in a less "official" context. There is no deadline for this, so people can decide during the conference if they want to participate. However if you already know that you want to participate, do not hesitate to inform us. Send us an email to lac2005 at zkm dot de and include a description of your equipment and a short characterisation of your music (keywords only). During the conference it is possible to register at the info desk. Note that there is a time limit for "Plug & Chill". If we have received too many registrations already you might not get a slot. Contributions to "Plug & Chill" should not exceed 10 min. There will be a room at ZKM where people can meet during the conference and rehearse for "Plug & Chill".

20 years, 8 months

[linux-audio-dev] xruns, VP kernel, interrupts

by John Hedditch

Hi all. Does anyone have any ideas on what this message means: Unexpected hw_pointer value [1] (stream = 0, delta: -106, max jitter = 128): wrong interrupt acknowledge? It seems to accompany the xruns I get with the 2.6.9-rc2-mm4-VP-S7 kernel. Otherwise, this gives the best results I've yet got with jack. Incidentally, has anyone ever had an xrun-free system with jackd -R -d alsa -p64 ? Cheers, John

20 years, 8 months

[linux-audio-dev] LAC 2004 recordings now online

by Joern Nettingsmeier

hi everyone! thanks to the work of stephan römer at zkm, the recordings of the linux audio conference 2004 are now completely edited and tagged. they are being uploaded as i type. you will find them at http://linuxaudiodev.org/contrib/zkm_meeting_2004/recordings/ , the corresponding slides are at http://linuxaudiodev.org/contrib/zkm_meeting_2004/slides/ . best regards, and sorry it took so long (my responsibility), jörn ps: if you have more photos, recordings or other lac memorabilia to share, throw them my way so that i can upload them. -- "90% of all networking problems are routing problems. 9 of the remaining 10% are routing problems, but in the other direction. The final 1% might be something else, but check the routing anyway." - Anthony Stone's networking words of wisdom Jörn Nettingsmeier Lortzingstr. 11, 45128 Essen, Germany http://spunk.dnsalias.org (my server) http://www.linuxaudiodev.org (Linux Audio Developers)

20 years, 8 months

Re: [linux-audio-dev] Drum synth

by Lachlan Davison

> > > http://www.soundonsound.com/sos/Apr02/articles/synthsecrets0402.asp > > > > > > if this is translated into a galan patch a UI can be built which looks > > > very similar to drumatic. > > > > > > -- > > > torben Hohn > > > http://galan.sourceforge.net -- The graphical Audio language > > > > Torben, You are a god among men, THANKS, this is EXACTLY what i was looking for because the schematics where somewhat enigmatic for me. Thanks tons, i shall start coding it one monday! (i have an exam on monday so not earlier) Now i just have to decide on using thinksynth or galan for the prototype :-) Last time i tried galan it was too fast on my machine... a p3 650...but i'm hopeful! > > > > someone on #lad told me about that. > what do you mean with to fast ? > > do you mean galan-0.3/include/generator.h:24 > > > #define SAMPLE_RATE 48000 ??? > > my interface only does 48k and i am not proud, that its still hardcoded > but ;) > Opps, sorry, typo there.... Too slow... makes much more sense now, as in my wimpy p3 650 does not really cope with Galan too well. Simple patches seem to use a lot of cpu so i don't know how doing more complex patches in it would be. I have enough trouble running Muse and Zyn at the same time. Work on the drum synth will be starting soon, i was slowed down by my laptop catching on fire on tuesday. ;-) At this stage i'm thinking of copying the circuits for the good ones in the TR series, the non-sample based simmons, and the techniques on the SOS site for tuned drums. Anything else anyone is keen on? A drum synth they can't live without? Or any particular drum sounds? Dmitry, and I have decided on a name, but you'll here it when the code is done. Loki

20 years, 8 months

[linux-audio-dev] [ANN] Specimen v0.4.4

by Pete Bessman

Normally, I don't announce minor releases, but this is an exception. The latest Specimen has a completely redone GUI, which I hope will make using it suck a whole lot less. Downloads: www.gazuga.net/downloads.php Screenshots: www.gazuga.net/screenshots.php This version of Specimen also relies on PHAT, so be sure you have the latest version (0.2.2). PHAT: www.gazuga.net/phat.php This is a relatively ambitious endeavor, so please inundate me with bug reports. And yes, MIDI control is coming really, really soon. Seriously. --Pete

20 years, 8 months

[linux-audio-dev] Apple's distributed audio processing technology

by Kai Vehmanen

As seen on slashdot: http://www.apple.com/logic/distributedaudio.html ""Simply add one or more Macintosh systems via Ethernet (or FireWire) connections to your Logic Pro 7 system. The result is an audio and music production system with processing power that was previously unimaginable for native-based systems."" No details about the protocols used. Gigabit ethernet is recommended for "the best performance". Pretty interesting stuff to say the least. -- http://www.eca.cx Audio software for Linux!

20 years, 8 months

[linux-audio-dev] Logic 7: Distributed Audio over GigE

by lazzaro

Hi everyone, Of interest to the networking discussions here ... http://www.apple.com/logic/distributedaudio.html --- John Lazzaro http://www.cs.berkeley.edu/~lazzaro lazzaro [at] cs [dot] berkeley [dot] edu ---

20 years, 8 months

Re: [linux-audio-dev] M-Audio Sonica/Ozone/MobilePre/Transit firm ware loader now works

by Stephen Hassard

I just played around with my Sonica a little more (on i386) and found that after the firmware upload was attempted, madfuload was unable to reset the device. It looks like the device auto-reset, as the USB device changed (increment by one). The usb IDs have also changed. Here's a nice big log. ----- lsusb -v (before) Bus 001 Device 010: ID 0763:2805 Midiman Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.00 bDeviceClass 254 Application Specific Interface bDeviceSubClass 1 Device Firmware Update bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0763 Midiman idProduct 0x2805 bcdDevice 1.00 iManufacturer 1 iProduct 2 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 25 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x40 Self Powered MaxPower 200mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 254 Application Specific Interface bInterfaceSubClass 1 Device Firmware Update bInterfaceProtocol 0 iInterface 3 --- lsusb -v (after) Bus 001 Device 011: ID 0763:2005 Midiman Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 8 idVendor 0x0763 Midiman idProduct 0x2005 bcdDevice 1.01 iManufacturer 1 iProduct 2 iSerial 0 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 277 bNumInterfaces 2 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 MaxPower 200mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 1 Control Device bInterfaceProtocol 0 iInterface 2 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 1 (HEADER) bcdADC 1.00 wTotalLength 40 bInCollection 1 baInterfaceNr( 0) 1 AudioControl Interface Descriptor: bLength 12 bDescriptorType 36 bDescriptorSubtype 2 (INPUT_TERMINAL) bTerminalID 1 wTerminalType 0x0101 USB Streaming bAssocTerminal 0 bNrChannels 2 wChannelConfig 0x0003 Left Front (L) Right Front (R) iChannelNames 0 iTerminal 0 AudioControl Interface Descriptor: bLength 10 bDescriptorType 36 bDescriptorSubtype 6 (FEATURE_UNIT) bUnitID 2 bSourceID 1 bControlSize 1 bmaControls( 0) 0x01 Mute bmaControls( 1) 0x02 Volume bmaControls( 2) 0x02 Volume iFeature 0 AudioControl Interface Descriptor: bLength 9 bDescriptorType 36 bDescriptorSubtype 3 (OUTPUT_TERMINAL) bTerminalID 3 wTerminalType 0x0301 Speaker bAssocTerminal 0 bSourceID 2 iTerminal 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 0 bNumEndpoints 0 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 1 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x0240 bytes 576 once bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 1 Milliseconds wLockDelay 1500 Milliseconds AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 1 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 3 bBitResolution 24 bSamFreqType 10 Discrete tSamFreq[ 0] 8000 tSamFreq[ 1] 11025 tSamFreq[ 2] 12000 tSamFreq[ 3] 22050 tSamFreq[ 4] 24000 tSamFreq[ 5] 32000 tSamFreq[ 6] 44100 tSamFreq[ 7] 48000 tSamFreq[ 8] 88200 tSamFreq[ 9] 96000 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 2 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x0180 bytes 384 once bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 1 Milliseconds wLockDelay 1500 Milliseconds AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 1 bDelay 1 frames wFormatTag 1 PCM AudioStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 1 (FORMAT_TYPE_I) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 10 Discrete tSamFreq[ 0] 8000 tSamFreq[ 1] 11025 tSamFreq[ 2] 12000 tSamFreq[ 3] 22050 tSamFreq[ 4] 24000 tSamFreq[ 5] 32000 tSamFreq[ 6] 44100 tSamFreq[ 7] 48000 tSamFreq[ 8] 88200 tSamFreq[ 9] 96000 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 1 bAlternateSetting 3 bNumEndpoints 1 bInterfaceClass 1 Audio bInterfaceSubClass 2 Streaming bInterfaceProtocol 0 iInterface 0 Endpoint Descriptor: bLength 9 bDescriptorType 5 bEndpointAddress 0x03 EP 3 OUT bmAttributes 9 Transfer Type Isochronous Synch Type Adaptive Usage Type Data wMaxPacketSize 0x0180 bytes 384 once bInterval 1 bRefresh 0 bSynchAddress 0 AudioControl Endpoint Descriptor: bLength 7 bDescriptorType 37 bDescriptorSubtype 1 (EP_GENERAL) bmAttributes 0x01 Sampling Frequency bLockDelayUnits 1 Milliseconds wLockDelay 1500 Milliseconds AudioStreaming Interface Descriptor: bLength 7 bDescriptorType 36 bDescriptorSubtype 1 (AS_GENERAL) bTerminalLink 1 bDelay 1 frames wFormatTag 8193 IEC1937_AC-3 AudioStreaming Interface Descriptor: bLength 38 bDescriptorType 36 bDescriptorSubtype 2 (FORMAT_TYPE) bFormatType 3 (FORMAT_TYPE_III) bNrChannels 2 bSubframeSize 2 bBitResolution 16 bSamFreqType 10 Discrete tSamFreq[ 0] 8000 tSamFreq[ 1] 11025 tSamFreq[ 2] 12000 tSamFreq[ 3] 22050 tSamFreq[ 4] 24000 tSamFreq[ 5] 32000 tSamFreq[ 6] 44100 tSamFreq[ 7] 48000 tSamFreq[ 8] 88200 tSamFreq[ 9] 96000 --- ./madfuload -D /proc/bus/usb/001/007 -f ma005101.bin -v -v -3 ma005101.bin: 5959 bytes read successfully reading device descriptor ... interface descriptor 0:0 DFU interface is 0 DFU descriptor found transfer size is 64 waiting 32 ms cannot reset device: (19) No such device --- dmesg output usb 1-1: new full speed USB device using address 7 usb 1-1: reset full speed USB device using address 7 usb 1-1: device firmware changed usb 1-1: USB disconnect, address 7 usb 1-1: new full speed USB device using address 8 Thanks, Steve Hassard Clemens Ladisch wrote: > I wrote: > >>Stephen Hassard wrote: >> >>>Segmentation fault >>> >>>I'm running an AMD64 kernel in 64bits mode. >> >>This looks as if I'm using a wrong data type in some structure >>(probably usbdevfs_ctrltransfer). > > > This was indeed the problem. > > I've released a new version (0.4): > http://sourceforge.net/project/showfiles.php?group_id=87777&package_id=94170 > > > HTH > Clemens >

20 years, 8 months

[linux-audio-dev] VP kernels

by Dmitry Baikov

Hello! I'm not subscribed to LKML, so positng here. Anyone tried 2.6.9-rc2-mm1-VP-S3? In two words: no luck. i8042 does not work at all (have an usb kbd hopely). Nvidia-61.11 does not modprobe (unresolved symbols), but builds . 2.6.9-rc1-VP-S0 works fine. except for few lockups after writing cds (may be not kernel, but xorg-6.8.0). Any comments? -- Dmitry.

20 years, 8 months

[linux-audio-dev] Linux/Alsa Tascam US-122 Issues

by Antonio Willy Malara

hello everybody! i've finally got an usb-audio card for my linux audio madness, i've taken a tascam us122, beacuse of the good support it has, infact i was able to use it, i've not tested it extensively because i was moving and my laptop had a desperate need of a reinstalling :P i've reinstalled this ibook with a net-installed debian sid and the first thing i've done was compiling the same alsa and kernel versions, linux vanilla 2.6.8.1 and alsa-driver 1.0.6a, alsa-lib 1.0.6 but all alsa wont work... with the internal powermac audio card (which was working) i got a undefined referece, in compile time (but not fatal, since the module is compiled) and in inserting time: Zeryn:/home/willy# modprobe snd-powermac snd_powermac: Unknown symbol num_controls Zeryn:/home/willy# but i can live without it, i have the oss module and i plan to not use it anymore, because the tascam card will be conencted to everything in my setup, but the strangest things happened when i tried to plug the usb-usx2y module: a variety of freezes, kernel panics, oops, so i've tried to compile different versions of alsa and kernel, i've tried combinations of: linux 2.4.27, 2.6.8, 2.6.7, 2.6.9-rc2, 2.6.9-rc2-bk9 alsa 1.0.6, 1.0.6a, 1.0.7rc1, alsa-cvs (alsa cvs was broken) now i got the same error over and over again, the hotplug scrits are loading the firmware, the module is correctly loaded and the card is powering up well and the usb led keeps to stay on, but, when i try to launch jack or an audio application i got some messages regarding "sequence errors" and i have to kill the application via ctrl-c, if i restart the application i have a freeze (no kernel panics or such) this is the kernel log from kernel module loading to the freeze --- Sep 26 05:34:27 (none) kernel: usbcore: registered new driver snd-usb- usx2y Sep 26 05:34:37 (none) kernel: ohci_hcd 0001:01:18.0: wakeup Sep 26 05:34:37 (none) kernel: usb 1-1: new full speed USB device using address 2 Sep 26 05:34:38 (none) kernel: usb 1-1: USB disconnect, address 2 Sep 26 05:34:39 (none) kernel: ohci_hcd 0001:01:18.0: wakeup Sep 26 05:34:40 (none) kernel: usb 1-1: new full speed USB device using address 3 Sep 26 05:35:12 (none) kernel: ALSA /home/willy/Pacchi/alsa/alsa- driver-1.0.6a/kbuild/../usb/usx2y/../../alsa-kernel/usb/usx2y/ usbusx2yaudio.c:30 4: Sequence Error!(ep=10;nuc=0,frame=34039) Sep 26 05:35:12 (none) kernel: ohci_hcd 0001:01:18.0: bad entry 50ce000 Sep 26 05:35:19 (none) kernel: ALSA /home/willy/Pacchi/alsa/alsa- driver-1.0.6a/kbuild/../usb/usx2y/../../alsa-kernel/usb/usx2y/ usbusx2yaudio.c:37 0: timeout: still 9 active urbs.. Sep 26 05:35:20 (none) kernel: ALSA /home/willy/Pacchi/alsa/alsa- driver-1.0.6a/kbuild/../usb/usx2y/../../alsa-kernel/usb/usx2y/ usbusx2yaudio.c:37 0: timeout: still 2 active urbs.. --- everyone knows this issue? or knows the versions of alsa/kernel this card will work well? the device is surely working because i use well on osx with audacity sorry for the long post, but i've tried everything i know.. whit the exception of voodoo programming :P wil --- Il jazz e' lasciare che la luce brilli, lasciarla essere. -- Keith Jarrett

20 years, 8 months

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Linux-audio-dev