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[alsa-devel] Linux 2.6.22 and SB-Live! - broken microphone capture?
by Chris Rankin 09 Aug '07

09 Aug '07

Hi, I have been testing my old SB Live! card with Linux 2.6.22 and the 1.0.14 alsa lib and utils, and I have discovered that the following no longer works: $ arecord -f cd -t wav -d 4 > testin.wav Recording WAVE 'stdin' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo arecord: pcm_read:1346: read error: Input/output error The testin.wav file is always 44 bytes long. The microphone works, is plugged into the correct slot, and (AFAICT) all the mixer settings are correct: - playback AC97 = 0 - capture AC97 = 100 - mic select = mic1 - mic set to capture - capture volume = 100, and set to capture Has something broken in ALSA, please? Playback seems fine, and I get some kind of noise from the speakers if I raise the Microphone playback volume to 100 and then blow on the microphone. I also have an Audigy 2 card, and microphone capture works fine there. Can anyone confirm this, please? Thanks, Chris ___________________________________________________________ Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your free account today http://uk.rd.yahoo.com/evt=44106/*http://uk.docs.yahoo.com/mail/winter07.ht…

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[alsa-devel] Website to Wiki migration
by Eliot Blennerhassett 08 Aug '07

08 Aug '07

Greetings, IMO the basic content of the static website has been migrated to the wiki. This doesn't include the following: * http://alsa-project.org/changes/ Changelogs .txt files are referenced, assume they are auto generated? * Contents of http://www.alsa-project.org/alsa/ftp/ * Contents of http://www.alsa-project.org/~iwai/ include "Writing an alsa driver" * User added comments in the soundcard matrix are referenced. (Is there any way to find out which modules in the matrix have user comments attached so that they can be copied across to the wiki?) Anything missing - tell about it here: http://bugtrack.alsa-project.org/main/index.php/MigrationPlan One proposal for prettier front page is here: http://bugtrack.alsa-project.org/main/index.php/Talk:Main_Page Go ahead - criticise, praise, make your own... cheers Eliot

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[alsa-devel] Possible problems with alsa soc
by Nobin Mathew 08 Aug '07

08 Aug '07

Hi Liam, There are some players which will call snd-pcm_close() before any open call, i dont know why they are calling this. So in ASoC it will put the stream in SNDRV_CTL_POWER_D3hot and pop_wait equal to 1. This state will make problems in snd_pcm_prepare (i.e soc_pcm_prepare). Trouble creating players and libraries are mpg123 and gstreamer library. Takashi, We now have priority based alsa plugin, as I explained earlier. all these credits goes to Sudhanshu. This will be usefull for many gps, bluetooth and audio SoCs. But we need to make some changes to make it generic, later we will summit this as a patch. Thanks Nobin Mathew

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[alsa-devel] how to 'alias' a mixer element?
by John L. Utz III 08 Aug '07

08 Aug '07

Hello; If one had a mixer item called 'Surround' and one really wanted to access it as an item called 'Rear' instead of using the existing name 'Surround', would it be possible to create a virtual control called Rear that just maps directly to Surround? tnx! johnu

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[alsa-devel] trouble compiling alsa-drivers
by Wallace, Brooke 08 Aug '07

08 Aug '07

The alsa-drivers INSTALL file tells me: On 2.6 kernels, the build directory has to be given via --with-build=<kernel_build_dir> option additionaly, too. What exactly is mean by kernel_build_dir? I should not have to recompile my kernel because I already have the sourcecore module. Configure seems to work fine and locates my kernel source code: ./configure --with-cards=hda-intel --with-sequencer=yes But when I compile, it fails in acore/pcm_native.c line #75, acore/pcm_native.c line #75 uses the macro DEFINE_RWLOCK which apparently has not been defined yet. Searching thu the alsa-drivers source, I find that include/adriver.h defines this macro. What am I doing wrong? Why doesn't adriver.h get included when I compile acore/pcm_native.c? I'm using the latest release - alsa-driver-1.0.14rc4 My Kernel sources are: 2.6.9-34.EL-smp-i686 Alsa is already working fine on this system using the HDA Intel driver, its a RHEL- 3.4.5-2 system. I just want to re-compile the latest ALSA software and start writing a dummy user space driver that prints to a file or something. I should be able to cmopile all of the latest ALSA software... Any help is appreciated. -Brooke

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[alsa-devel] Noise on rear speaker when switching from 2.0 to 5.1 sound
by Felix Rauscher 07 Aug '07

07 Aug '07

Hello, I have a Hercules Muse 5.1 DVD (C-Media PCI CMI8738-MC6). I have a problem when a running xine (e.g xineliboutput from vdr) switches from 2.0 to 5.1 output. Then the sound quality of the rear speakers is terrible. There is a noise on the rear speakers. If I start the xineliboutput-client when vdr already plays a programme with a 5.1 sound track, the quality is ok. It looks like the switching between 2.0 to 5.1 is a problem. Thank you for your help! Felix

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Re: [alsa-devel] SOLVED Re: snd_pcm_hw_params_set_format fails with invalid argument
by stan 07 Aug '07

07 Aug '07

I sent this directly to Takashi by mistake. I could have sworn I saw the list in the to field but I must be mistaken. Here it is for the list. On Tue, 7 Aug 2007 08:02:42 -0700 stan <stanl(a)cox.net> wrote: > On Tue, 07 Aug 2007 15:38:40 +0200 > Takashi Iwai <tiwai(a)suse.de> wrote: > > > At Mon, 6 Aug 2007 09:22:01 -0700, > > stan wrote: > > > > > > On Mon, 6 Aug 2007 09:04:57 -0700 > > > stan <stanl(a)cox.net> wrote: > > > > > > > I downloaded the hg alsa-lib snapshot of July 14, 2007, compiled > > > > it, (on Fedora 7 you will have to make a link to compile, > > > > cd /usr/include > > > > ln -s python2.5 python) > > > > and linked my program against it. It works again so the issue > > > > has been fixed in the latest version of alsa lib. Any estimate > > > > of when this version will be released for public consumption? > > > > My app is dead in the water with the current version of alsa, so > > > > anyone trying to use it will have a terrible user > > > > experience. :-( I want to give some indication of when people > > > > can expect it to start working again. In the meantime I'll > > > > create instructions on how to install the hg version to > > > > usr/local and change the library linking. > > > > > > > > Thanks. > > > > > > > For anyone interested, these are the formats that fail in 1.0.14 > > > final > > > > > > Value of last format 43 > > > test of sample format 14 failed (Invalid argument) > > > test of sample format 15 failed (Invalid argument) > > > test of sample format 16 failed (Invalid argument) > > > test of sample format 17 failed (Invalid argument) > > > test of sample format 18 failed (Invalid argument) > > > test of sample format 19 failed (Invalid argument) > > > test of sample format 23 failed (Invalid argument) > > > test of sample format 24 failed (Invalid argument) > > > test of sample format 25 failed (Invalid argument) > > > test of sample format 26 failed (Invalid argument) > > > test of sample format 27 failed (Invalid argument) > > > test of sample format 28 failed (Invalid argument) > > > test of sample format 29 failed (Invalid argument) > > > test of sample format 30 failed (Invalid argument) > > > test of sample format 31 failed (Invalid argument) > > > Format returned (0) > > > > > > > > > and these are the formats that fail in the hg version. > > > > > > Value of last format 43 > > > test of sample format 18 failed (Invalid argument) > > > test of sample format 19 failed (Invalid argument) > > > test of sample format 23 failed (Invalid argument) > > > test of sample format 24 failed (Invalid argument) > > > test of sample format 25 failed (Invalid argument) > > > test of sample format 26 failed (Invalid argument) > > > test of sample format 27 failed (Invalid argument) > > > test of sample format 28 failed (Invalid argument) > > > test of sample format 29 failed (Invalid argument) > > > test of sample format 30 failed (Invalid argument) > > > test of sample format 31 failed (Invalid argument) > > > Format returned (16) > > > > Could you give me the simple test case for checking the same thing > > on my system? > > > > > > thanks, > > > > Takashi > > They are attached as file test_case.c and shell script mktest. > > Running ./mktest should generate an executable named test_case. > Running that should generate the above output. > >

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[alsa-devel] snd_pcm_hw_params_set_format fails with invalid argument
by stan 07 Aug '07

07 Aug '07

Fedora 7 upgraded alsa to 1.0.14 from RC3. I was going to test the default device sound for my prior problem (as requested by Takashi weeks ago). Unfortunately when I try to run my app it won't start. The snd_pcm_hw_params_set_format fails when I try to use it as follows. err = snd_pcm_hw_params_set_access (alsa_dev, hw_params, ND_PCM_ACCESS_RW_INTERLEAVED); if (err < 0) { fprintf (stderr, "cannot set access type (%s)\n", snd_strerror (err)) ; goto catch_error ; } ; err = snd_pcm_hw_params_set_format (alsa_dev, hw_params, SND_PCM_FORMAT_FLOAT64_LE); //err = snd_pcm_hw_params_set_format (alsa_dev, hw_params, SND_PCM_FORMAT_S32_LE); if (err < 0) { fprintf (stderr, "cannot set sample format (%s)\n", snd_strerror (err)) ; goto catch_error ; } ; cannot set sample format (Invalid argument) It compiles cleanly. When I replace the SND_PCM_FORMAT_FLOAT64_LE with the S32_LE, it sets it, but of course the sound is garbage as it is still receiving doubles. This code worked fine under RC3. Is there some change that occurred in the step from 1.0.14.rc3 to 1.0.14 that would explain the above and suggest a fix? Thank you. $ uname -r 2.6.22.1-41.fc7 $ cat /proc/asound/version Advanced Linux Sound Architecture Driver Version 1.0.14 (Thu May 31 09:03:25 2007 UTC). $ ls /proc/asound/card0 ice1724 id oss_mixer pcm0c pcm0p pcm1p pcm2p

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[alsa-devel] HDA: Add support for Acer Aspire laptops.
by Tobin Davis 07 Aug '07

07 Aug '07

This patch adds support for some Acer Aspire systems. Signed off by Tobin Davis <tdavis(a)dsl-only.net> I was actually sent this patch by someone on IRC. They approved for it to be submitted, and I don't see anything in the code to cause it to be kept out.

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[alsa-devel] HDA: Add more Dell systems
by Tobin Davis 07 Aug '07

07 Aug '07

This patch adds support for Dell E520 and a couple of other 965 based systems. Signed off by Tobin Davis <tdavis(a)dsl-only.net> On a side note, I start back to work tomorrow, getting paid to do these patches (well, sort of).

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