August 2007 - Alsa-devel - mailman.alsa-project.org

[alsa-devel] emu10k1 ALSA/jack problem
by jamesmstone＠gmail.com 14 Aug '07

14 Aug '07

Dear All, I am currently working on an audio program (aldrin) which uses libbzub driver http://trac.zeitherrschaft.org/zzub/browser/trunk/src/libzzub/driver.cpp for accessing the sound card. Libzzub, in turn uses rtaudio version 3.03, which is part of the libzzub source tree. The problem arises when I am running a jack server using my sblive, but specifying the default interface (hw:0). On startup, a vast number of xruns are generated (>200) and jack either falls over, or the computer almost completely locks up. This appears to be caused by rtaudio probing the alsa devices whilst jack is running. Interestingly, if I specify a sub-device (hw:0,3), or the integrated sound card (intel), no xruns are generated. I am wondering if this problem is arising because of a bug in the emu10k1 driver, or a problem with the way rtaudio probes alsa devices, or because it is a bad idea to probe alsa devices while they are being used by jack??? Best wishes, James

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[alsa-devel] Noisy audio
by Magdalena Iovescu 14 Aug '07

14 Aug '07

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[alsa-devel] Current alsa module list discrepancies
by Eliot Blennerhassett 14 Aug '07

14 Aug '07

Hello all, As part of getting the wiki up to date I have been comparing three lists of driver modules 1) List given by "configure --help" for --with-cards option 2) List of modules installed on my system when I make install alsa-driver 3) Current list of Module-* pages in the wiki The results of these comparisons is here. http://www.alsa-project.org/main/index.php/Matrix_Talk:Main Question is, are there some drivers in these lists that should be listed in "configure --help" (loopback -> aloop at least) Should all modules (even helpers) be documented in the wiki? Particularly helper modules that have parameters, to explain what the parameters are for. regards Eliot

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[alsa-devel] Problem with CME UF5 MIDI keyboard master volume slider
by Damon Chaplin 13 Aug '07

13 Aug '07

Hi, I have a CME UF5 MIDI keyboard (USB), which mostly works fine with ALSA. However if I move the Master Volume slider I stop getting MIDI events - I have to disconnect the snd_seq port and reconnect it to get MIDI events working again. Any ideas what the problem is? Or how to track it down? Also, I wanted to try the rawmidi test app, but what would the device ID be? Damon

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[alsa-devel] HDA - Add support for more Dell systems
by Tobin Davis 13 Aug '07

13 Aug '07

This patch adds more support for Dell systems with Stac9205 codecs. Tested against a couple of different systems (with different pin configs), but the others should also work. Also cleaned up some of the 9205 patch code. Ignore previous email, as I missed a few vendor ID replacements. Signed off by Tobin Davis <tdavis(a)dsl-only.net>

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[alsa-devel] Recent code changes for HD-audio on HG repo
by Claude Michel 13 Aug '07

13 Aug '07

Hi, I have done come test of the new suspend/resume capabilities. However suspend failed to correctly work on my laptop (dell d630). You must note that there is a few trouble issues with sound on this laptop: the snd_hda_intel driver correctly detect a STAC9205 and get the default pin configuration from the bios. So far, so good ... however, pin B is by default configured as line out and is working as such. But, it does not correctly work with an external microphone as it need a vref. So, instead of using the bios settings, I use the windows default settings. This is not perfectly working : I usually get some glinches that disappear after a logout/login procedure. Nothing significant appears from a diff between /proc/asound/card0/codec0 before and after this procedure ... Now let talk about the suspend failure. The suspend procedure (which was previously working) produce a bug (I was not able to catch the message at this stage. This is a partial and hand written report ..): Bug: unable to handle kernel NULL Pointer deferred at virtual address 0000 .... Call trace ... <f9546d24> hda_set_power_state+0x34/0x150 [snd_hda_intel] <f9547768> hda_call_code_suspend+0x39/0x60 [snd_hda_intel] <f955477b7> snd_hda_suspend+0x27/0x50 [snd_hda_intel]<f954603c> azx_suspend+0x60/0xd0 [snd_hda_intel] <c023b29ac> pci_device_suspend+0x2c/0x70 <c0f29effd> suspend_devide+0xdd/0x110 .... By the way, I am running mandriva 2007.1 with kernel 2.6.17-14mdv. cpjm

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[alsa-devel] HDA - Add support for more Dell systems
by Tobin Davis 12 Aug '07

12 Aug '07

This patch adds more support for Dell systems with Stac9205 codecs. Tested against a couple of different systems (with different pin configs), but the others should also work. Also cleaned up some of the 9205 patch code. Signed off by Tobin Davis <tdavis(a)dsl-only.net>

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[alsa-devel] Intel HDA pin-config values (patch_sigmatel.c) - Dell Inspiron 1721 (also 1521?) mic
by Thorsten Riess 11 Aug '07

11 Aug '07

Hi, I am wondering where the values of ref9205_pin_configs in patch_sigmatel come from. The SigmaTel documentation gives different reference values for the 9205. The set of values I use at the moment is static unsigned int ref9205_pin_configs[12] = { 0x02214020, 0x02a19041, 0x40000100, 0x40000100, 0x40000100, 0x40000100, 0x40000100, 0x40000100, 0x10a000f0, 0x50a000f0, 0x01441030, 0x01c41030 }; (the first two are actually from the SigmaTel document, the other just mute the remaining in/outs) These numbers actually work quite well for the Dell Inspiron 1721 (and probably for the 1521), even the mic input works - although the quality could be better and the input levels have to be adjusted carefully. Can anybody confirm this? Thorsten.

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[alsa-devel] ALSA WWW moved to Mediawiki
by Jaroslav Kysela 11 Aug '07

11 Aug '07

Hi all, today, I moved www.alsa-project.org to the second ALSA server with Mediawiki. The official URL is: http://www.alsa-project.org/main/index.php/Main_Page or http://www.alsa-project.org (for links from other sites) I also created templates to keep actual release versions in one page. The nice "Download a package" box on main page was taken from mediawiki.org. I'm also working on new box with news for the front page generating news from Main_Page_News. Last change is the modification of Special:Prefixindex (new special name is Special:ALSAPrefixindex) to remove 'Vendor-' and 'Module-' (or any other) prefixes to increase readability of Matrix:Main page. I would like to thank you to all wiki contributors. Jaroslav ----- Jaroslav Kysela <perex(a)suse.cz> Linux Kernel Sound Maintainer ALSA Project, SUSE Labs

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[alsa-devel] Where is simple mixer control "Surround" defined for ac97 or via82xx? I cant find it anywhere in ac97....
by John L. Utz III 10 Aug '07

10 Aug '07

The Surround controls exists: amixer sget Surround Simple mixer control 'Surround',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 0 [0%] [-46.50dB] [off] Front Right: Playback 0 [0%] [-46.50dB] [off] amixer controls | grep Surround numid=20,iface=MIXER,name='Surround Playback Switch' numid=21,iface=MIXER,name='Surround Playback Volume' But for the life of me, i cant find the code that implements it! There are many implementations inside of the hda directory, but those dont have anything todo with non hda things, the only item in the ac97 directory is for AD18XX: ac97_codec.c:958:AD18XX_PCM_VOLUME("Surround Playback Volume", 1) This shouldnt have anything to do with VIA 1618 stuff, right? tnx! johnu

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