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[alsa-devel] [1/3] 2.6.22-rc1: known regressions v2
by Michal Piotrowski 16 May '07

16 May '07

Hi all, Here is a list of some known regressions in 2.6.22-rc1. Feel free to add new regressions/remove fixed etc. http://kernelnewbies.org/known_regressions Unclassified Subject : AMD k6-III/450 won't boot w/2.6.22-rc1 References : http://lkml.org/lkml/2007/5/16/192 Submitter : Bob Tracy <rct(a)gherkin.frus.com> Handled-By : Dave Jones <davej(a)codemonkey.org.uk> Status : problem is being debugged ACPI Subject : nx6125 has lost fan control References : http://lkml.org/lkml/2007/5/16/249 Submitter : Ray Lee <ray-lk(a)madrabbit.org> Status : Unknown ALSA Subject : lost snd_4236 device References : http://lkml.org/lkml/2007/5/13/87 Submitter : Pete Clements <clem(a)clem.clem-digital.net> Handled-By : Rene Herman <rene.herman(a)gmail.com> Patch : http://lkml.org/lkml/2007/5/15/23 Status : patch available Block devices Subject : loop devices limited to one single device References : http://lkml.org/lkml/2007/5/16/229 Submitter : Uwe Bugla <uwe.bugla(a)gmx.de> Status : Unknown Cryptography Subject : cryptomgr oops References : http://lkml.org/lkml/2007/5/14/283 Submitter : Luca Tettamanti <kronos.it(a)gmail.com> Handled-By : Herbert Xu <herbert(a)gondor.apana.org.au> Status : problem is being debugged Regards, Michal -- Michal K. K. Piotrowski Kernel Monkeys (http://kernel.wikidot.com/start)

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[alsa-devel] HDA: Add more systems to Sigmatel codec.
by Tobin Davis 16 May '07

16 May '07

This patch adds more Dell systems and a Panasonic laptop with Stac9200 codecs. Signed off by Tobin Davis <tdavis(a)dsl-only.net>

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[alsa-devel] HDA: Add support for Gateway NX860
by Tobin Davis 16 May '07

16 May '07

This patch adds support for the Gateway NX860 system. Signed off by Tobin Davis <tdavis(a)dsl-only.net>

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[alsa-devel] Audio DMA buffer layout
by Markus Korber 16 May '07

16 May '07

Hi, I'm working with a custom sound chip with its own DMA hardware. The figure shows how the I2S DMA expects data to be prepared: IRQ1 +----------------+ | page_3 (right) |\ +----------------+ > double buffer 1 | page_2 (left) |/ IRQ0 +----------------+ | page_1 (right) |\ +----------------+ > double buffer 0 | page_0 (left) |/ +----------------+ The hardware has 2 double buffers, each containing left and right sample regions, i.e. it alternately transmits samples from page_0 and page_1, i.e. double buffer 0, then generates an interrupt and starts transmitting page_2 and page_3. After that another interrupt is generated and the process begins again with double buffer 0. So my question is, how to tell ALSA about this memory layout? Is it possible to operate in MMAP mode with SNDRV_PCM_INFO_NONINTERLEAVED? But then, how to tell the application that it should either fill double buffer 0 or 1? Or should I use RW mode and copy samples manually to another buffer? Or something else? SG-DMA? page()-callback? Best regards, Markus Korber

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[alsa-devel] Steinberg Midex 8 driver development
by Norman Schleicher 16 May '07

16 May '07

I am currently on development for the Steinberg Midex8 USB driver. At the moment I can send notes to my Midi equipment via this device. Receiving is currently not implemented. My questions are: 1. Are there any tools to test the Alsa-Midi compatiblity ? 2. May I release some milestone results to the Alsa project ? Eg when the driver supports a small subset of send commands supported by midi. 3. What are the requirements to get released in an official alsa release package ? 4. Who is responsible for the version management ? Where can I read how the source code is organized in the repository and how to manage tags and branches for the development ?(I don't need an introduction how to use CVS, thats clear for me.) Regards Norman

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[alsa-devel] [PATCH] Add ALSA support for the SEGA Dreamcast PCM device
by Adrian McMenamin 16 May '07

16 May '07

Incorporating further small changes to tidy the code, please commit if ok. ALSA support for the SEGA Dreamcast Yamaha AICA sound device (pcm) This patch adds ALSA sound support for pcm playback on two channels on the SEGA Dreamcast built-in sound device (the Yamaha AICA) Add driver for the AICA sound device built into the SEGA Dreamcast Hook it all up with the build system. Signed-off-by: Adrian McMenamin <adrian(a)mcmen.demon.co.uk>

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[alsa-devel] Question to integrate a new driver
by Jean-Christian Hassler 16 May '07

16 May '07

Hello ! I wrote with a friend an ALSA driver for the emagic AUDIOWERK 2 soundcard. Now it works for the analog inputs/outputs. The project page is here : http://home.gna.org/aw2-alsa/index.html We have 2 questions to continue our work : 1- what is the way to submit our code to be integrated in the ALSA tree ? 2- We develop on two different version of the kernel (2.6.17-14 & 2.6.20) and the request_irq function prototype has changed between these two versions(the "struct pt_regs *" does no longer exists), how is this managed in ALSA ? Thank you

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[alsa-devel] [PATCH] ALSA sound driver for SEGA Dreamcast AICA (pcm)
by Adrian McMenamin 16 May '07

16 May '07

(This is a cleaned-up version following comments - please commit) ALSA support for the SEGA Dreamcast Yamaha AICA sound device (pcm) This patch adds ALSA sound support for pcm playback on two channels on the SEGA Dreamcast built-in sound device (the Yamaha AICA) Add driver for the AICA sound device built into the SEGA Dreamcast Hook it all up with the build system. Signed-off-by: Adrian McMenamin <adrian(a)mcmen.demon.co.uk>

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[alsa-devel] Jackd dies with snd-usb-usx2y (DRIVER NT error)
by Michael Bourgeous 15 May '07

15 May '07

Hi, I recently upgraded my system from 32-bit Ubuntu Edgy, with a custom hard-realtime-enabled 2.6.19 kernel, to 64-bit Ubuntu Feisty, with a hard-realtime-enabled 2.6.20 kernel. I also switched from an Athlon XP 2600 to an Athlon 64 X2 4600. In every way my new system should be faster, but jackd+usx2y worked on the last system, and doesn't work now. Here's what I'm doing to test the audio setup: ---------- sudo chrt -f 90 `pidof IRQ-23` # usb irq chrt -v -f 70 jackd -d alsa -dhw:1,2 -p 64 -n 2 # also tried defaults, and values up to -p 256 -n 8 chrt -v -f 25 zynaddsubfx ---------- After a short time (< 1 or 2 minutes) of switching instruments and playing notes with zynaddsubfx, all audio stops and jackd dies with the following error: ---------- ALSA: poll time out, polled for 7998858 usecs DRIVER NT: could not run driver cycle jack main caught signal 12 no message buffer overruns ---------- There is a corresponding message in the kernel log: ---------- [12546.132286] ALSA [...]/usx2yhwdeppcm.c:94: activ frame status -70. Most propably some hardware problem. ---------- I am loading the snd-usb-usx2y module with the nrpacks=1 option. I've gone through the Ubuntu HOWTOs I used to get things working on my last system (to some of which I have even contributed), and I am still having this problem. I already tried on alsa-user, so I'm taking this to the developer list (since I plan to help fix this if anybody will point me in the right direction). Additional note: I tried modifying the source code of the driver, commenting out the return statement after the "active status" error message. This began producing a new error message: "shouldn't be here with count=xx". So, I commented out the "return -EPIPE" after that error message, and now jackd doesn't crash. There are noticeable audio clicks whenever one of these errors occurs, but the driver seems to have no problem recovering, as audio continues. This error happens with the stock Ubuntu kernels as well. Thanks in advance, Mike Bourgeous

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[alsa-devel] [Alsa-devel] Crosstool for PDA iPAQ hx4700
by K 15 May '07

15 May '07

Hi, I want to port a audio program on my hx4700, So I will use a prebuilt toolchain. I have downloaded ftp://ftp.handhelds.org/projects/toolchain/arm-linux-gcc-3.4.1.tar.bz2 and I extract this file to /usr/local/arm I have downloaded alsa-lib from ftp://ftp.alsa-project.org/pub/lib/stable/alsa-lib-0.0.9.tar.gz I have compiled it : #./configure --prefix=/usr/local/arm-linux --host=arm-linux #make #make install after I compile my program : #arm-linux-gcc -Wa,-mfpu=fpa11 -mcpu=xscale record.c -lasound -I /usr/local/arm/3.4.1/include/ /usr/local/arm/3.4.1/lib/gcc/arm-linux/3.4.1/../../../../arm-linux/bin/ld: cannot find -lasound collect2: ld returned 1 exit status Do you have an idea ? Can you help me ? I want to port a Vumeter, Peakmeter and other audio tools on hx4700. Thank you -- K

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