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[alsa-devel] alsa-lib: pcm_softvol.c: attenuation curve - it seems to be too quiet at full volume
by John L. Utz III 25 Jun '07

25 Jun '07

Hello All; I am in release testing with a fix to our product to use 4 channels on a CMEDIA 8738-MC6 (previously we only used 2 channels on the CMEDIA and a separate soundcard for the 2 back channels). The 8738 is a pretty funny old duck of a chip and i am trying to work around a subset of it's many idiosyncracies. :-) The most glaring defect is the absence of hard volume on the back channels *and* that the back channel is louder than the front channel. Obviously, this is a great candidate for softvol! Softvol works quite well *except* that the max volume for the rear channel is now much quieter than it is without softvol. :-( Is there anything i can do to alter this behavior? I notice that there is an initial minimal DB in the file: #define PRESET_MIN_DB -51.0 is this where everything starts from? if i bump this up, will i get a higher max volume? tnx! johnu

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[alsa-devel] Query regarding pointer callback
by Pharaoh . 25 Jun '07

25 Jun '07

Hi In Writing an ALSA driver, it is said that pointer callback is called usually from the buffer-update routine in the pcm middle layer, which is invoked when snd_pcm_period_elapsed() is called in the interrupt routine. Then the pcm middle layer updates the position and calculates the available space, and wakes up the sleeping poll threads, etc What are the other places from where pointer callback is called? If it is not called from any other routine then does it mean that interrupts are occuring?

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[alsa-devel] Intel Realtek ALC268 don't sound
by Antonio Rguez. Capita 25 Jun '07

25 Jun '07

Hi, I tried lastest HG driver version of Alsa, with patch included for ALC268. Apparently card is detected and mixer show correctly volumes bars, but don't sound. I tried option 3stack and auto in /etc/modprobe.d/alsa-base but nothing difference. I've a HP Pavilion dv6528 with Santa Rosa. Please tell me that I can do? Thanks

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Re: [alsa-devel] No sound on Medion laptop (intel 82801G)
by albox＠free.fr 25 Jun '07

25 Jun '07

Here is the result : $ sudo dmesg -c $ sudo rmmod snd-hda-intel && sudo modprobe snd-hda-intel probe_mask=1 $ dmesg [ 638.324000] ACPI: PCI interrupt for device 0000:00:1b.0 disabled [ 638.368000] ACPI: PCI Interrupt 0000:00:1b.0[A] -> GSI 22 (level, low) -> IRQ 22 [ 638.368000] PCI: Setting latency timer of device 0000:00:1b.0 to 64 [ 638.400000] ALSA /home/alboot/Sources/alsa1.0.14rc4/alsa-driver-1.0.14rc4/pci/hda/../../alsa-kernel/pci/hda/hda_intel.c:698: codec_mask = 0x3 [ 638.576000] ALSA /home/alboot/Sources/alsa1.0.14rc4/alsa-driver-1.0.14rc4/pci/hda/hda_codec.c:1820: hda_codec: model 'medion' is selected for config 161f:2054 (Medion laptop) I can hear a quick sound (like a "bip") when I enter the command but after that, the sound doesn't work.

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[alsa-devel] No sound on Medion laptop (intel 82801G)
by albox＠free.fr 25 Jun '07

25 Jun '07

Hi, I reported a bug about medion laptops having an intel 82801G sound card that doesn't work with ALSA 1.0.14rc4 on Kubuntu : https://bugtrack.alsa-project.org/alsa-bug/bug_view_advanced_page.php?bug_i… I didn't get any news yet. As I said, I'm willing to help. Any ideas about what I should check ? Is there any web page that could help me to detect the problem ? Thanks

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[alsa-devel] $1000 bounty for getting audio working under linux on a Osprey 440
by Nathan Allen Stratton 25 Jun '07

25 Jun '07

Need to get audio working on Osprey 440 card. http://www.viewcast.com/pages.asp?page=osprey-440 The card is bt878 based, and ViewCast says it is supported on linux however not something they support. Audio is not detected by default, but does how up when you do a modprobe snd-bt87x load-all(see below). However I have not been able to pull audio from the card (only get high pitched noise). Bid may require patching bt878.c if modprobe options don't work. Only mono support is required. [root@video share]# amixer Simple mixer control 'Bass',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 48 Mono: 30 [62%] Simple mixer control 'Bass Boost',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] Simple mixer control 'Treble',0 Capabilities: volume volume-joined Playback channels: Mono Capture channels: Mono Limits: 0 - 48 Mono: 24 [50%] Simple mixer control 'PCM',0 Capabilities: pvolume cvolume pswitch pswitch-joined cswitch cswitch-joined Playback channels: Front Left - Front Right Capture channels: Mono Limits: Playback 0 - 44 Capture 0 - 15 Mono: Capture 15 [100%] [15.00dB] [on] Front Left: Playback 44 [100%] [3.00dB] [on] Front Right: Playback 44 [100%] [3.00dB] [on] Simple mixer control 'PCM Capture Source',0 Capabilities: enum Items: 'PCM' 'Mic' 'Input 2' Item0: 'Input 2' Simple mixer control 'PCM',1 Capabilities: cvolume Capture channels: Mono Limits: Capture 0 - 656 Mono: Capture 0 [0%] [-41.00dB] Simple mixer control 'Mic',0 Capabilities: cvolume Capture channels: Mono Limits: Capture 0 - 15 Mono: Capture 0 [0%] [16.00dB] Simple mixer control 'Auto Gain Control',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [on] [root@video share]# amixer -c 1 Simple mixer control 'FM',0 Capabilities: cswitch cswitch-joined cswitch-exclusive Capture exclusive group: 0 Capture channels: Mono Mono: Capture [off] Simple mixer control 'Mic/Line',0 Capabilities: cswitch cswitch-joined cswitch-exclusive Capture exclusive group: 0 Capture channels: Mono Mono: Capture [on] Simple mixer control 'Capture',0 Capabilities: cvolume Capture channels: Mono Limits: Capture 0 - 15 Mono: Capture 15 [100%] Simple mixer control 'Capture Boost',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Simple mixer control 'TV Tuner',0 Capabilities: cswitch cswitch-joined cswitch-exclusive Capture exclusive group: 0 Capture channels: Mono Mono: Capture [off] :::::::::::::: cards :::::::::::::: 0 [INport ]: USB-Audio - INport Xitel INport at usb-0000:00:1d.0-1, full speed 1 [Bt878 ]: Bt87x - Brooktree Bt878 Brooktree Bt878 at 0xd8001000, irq 16 2 [Bt878_1 ]: Bt87x - Brooktree Bt878 Brooktree Bt878 at 0xd8003000, irq 17 3 [Bt878_2 ]: Bt87x - Brooktree Bt878 Brooktree Bt878 at 0xd8005000, irq 18 4 [Bt878_3 ]: Bt87x - Brooktree Bt878 Brooktree Bt878 at 0xd8007000, irq 19 :::::::::::::: devices :::::::::::::: 2: : timer 3: : sequencer 4: [ 0- 0]: digital audio playback 5: [ 0- 0]: digital audio capture 6: [ 0] : control 7: [ 1- 1]: digital audio capture 8: [ 1- 0]: digital audio capture 9: [ 1] : control 10: [ 2- 1]: digital audio capture 11: [ 2- 0]: digital audio capture 12: [ 2] : control 13: [ 3- 1]: digital audio capture 14: [ 3- 0]: digital audio capture 15: [ 3] : control 16: [ 4- 1]: digital audio capture 17: [ 4- 0]: digital audio capture 18: [ 4] : control :::::::::::::: hwdep :::::::::::::: *** INport: directory *** :::::::::::::: modules :::::::::::::: 0 snd_usb_audio 1 snd_bt87x 2 snd_bt87x 3 snd_bt87x 4 snd_bt87x *** oss: directory *** :::::::::::::: pcm :::::::::::::: 00-00: USB Audio : USB Audio : playback 1 : capture 1 01-01: Bt87x Analog : Bt87x Analog : capture 1 01-00: Bt87x Digital : Bt87x Digital : capture 1 02-01: Bt87x Analog : Bt87x Analog : capture 1 02-00: Bt87x Digital : Bt87x Digital : capture 1 03-01: Bt87x Analog : Bt87x Analog : capture 1 03-00: Bt87x Digital : Bt87x Digital : capture 1 04-01: Bt87x Analog : Bt87x Analog : capture 1 04-00: Bt87x Digital : Bt87x Digital : capture 1 *** seq: directory *** :::::::::::::: timers :::::::::::::: G0: system timer : 1000.000us (10000000 ticks) P0-0-0: PCM playback 0-0-0 : SLAVE P0-0-1: PCM capture 0-0-1 : SLAVE P1-0-1: PCM capture 1-0-1 : SLAVE P1-1-1: PCM capture 1-1-1 : SLAVE P2-0-1: PCM capture 2-0-1 : SLAVE P2-1-1: PCM capture 2-1-1 : SLAVE P3-0-1: PCM capture 3-0-1 : SLAVE P3-1-1: PCM capture 3-1-1 : SLAVE P4-0-1: PCM capture 4-0-1 : SLAVE P4-1-1: PCM capture 4-1-1 : SLAVE :::::::::::::: version :::::::::::::: Advanced Linux Sound Architecture Driver Version 1.0.14rc3 (Wed Mar 14 07:25:50 2007 UTC). unknown card 0x878-0x70:0xff07, using default rate 32000 please mail id, board name, and, if it works, the correct digital_rate option to <alsa-devel(a)lists.sf.net> ACPI: PCI Interrupt 0000:06:04.1[A] -> GSI 16 (level, low) -> IRQ 16 unknown card 0x878-0x70:0xff07, using default rate 32000 please mail id, board name, and, if it works, the correct digital_rate option to <alsa-devel(a)lists.sf.net> ACPI: PCI Interrupt 0000:06:05.1[A] -> GSI 17 (level, low) -> IRQ 17 unknown card 0x878-0x70:0xff07, using default rate 32000 please mail id, board name, and, if it works, the correct digital_rate option to <alsa-devel(a)lists.sf.net> ACPI: PCI Interrupt 0000:06:06.1[A] -> GSI 18 (level, low) -> IRQ 18 unknown card 0x878-0x70:0xff07, using default rate 32000 please mail id, board name, and, if it works, the correct digital_rate option to <alsa-devel(a)lists.sf.net> ACPI: PCI Interrupt 0000:06:07.1[A] -> GSI 19 (level, low) -> IRQ 19 ><> Nathan Stratton CTO, Voila IP Communications nathan at robotics.net nathan at voilaip.com http://www.robotics.net http://www.voilaip.com

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[alsa-devel] pcm->private_data is NULL in alsa core!!
by Pharaoh . 22 Jun '07

22 Jun '07

Hi I am writing an alsa driver for my omap based board. I am testing it using cat /dev/audio currently, i.e. I have OSS emulation turned on. This is an initial round of testing and I will use alsa-libs and utils later. My problem is: I have set the pcm->private_data = my_chip after registering the pcm ops, after referring various standard drivers in alsa tree. My module is insmoded properly but after I do snd_card_register(card) the pcm->private_data is corrupted !! Before this step, the pcm->private_data is intact. But after looking at the snd_card_register(), I realized that it doesn't even touch the pcm pointer. So, when I cat the device I get huge segfault in snd_pcm_attach_substream(), since pcm->private_data is NULL but surprisingly all the other fields are intact in pcm pointer. Even the OSS code doesn't touch the pcm pointer, what must be wrong? I have checked my source atleast 5 times and couldn't find anything in it. -pharaoh.

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[alsa-devel] AT91 SoC PCM Capture
by Paul Kavan 22 Jun '07

22 Jun '07

I am wondering what piece of code contains the capture functionality for the at91 soc. I am hoping to see how and when the pcm activates the ssc at read time. I just cannot figure out why TD0 would behave at such with this set of code and yet behave correctly with my polling code. Not a criticism....just wanting to figure this out. Paul -- *************************************** Paul David Kavan Project Engineer GRH Electronics, Inc. 402-734-4900 pkavan(a)gmail.com ***************************************

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[alsa-devel] Osprey 440 almost supported!!! Need X9221 i2c support!
by Nathan Allen Stratton 22 Jun '07

22 Jun '07

This card does not use analog bt878a inputs, but rather the digital input. To get audio working I set the mask to 000303, first two bits are for the audio rate, 00 is 32000, 01 is 41000, 10 is 4800. The first two bits in the next byte are for balanced or unbalanced audio input. 0x00 for unbalanced and 0x100 for balanced. So I am using: modprobe bttv card=140 bttv_gpio=1 bttv_verbose=2 bttv_debug=1 gpiomask=0x020303 audioall=0xFFFDFC bttv: Bt8xx card found (0). bttv0: Bt878 (rev 17) at 0000:08:04.0, irq: 24, latency: 132, mmio: 0xc8600000 bttv0: detected: Osprey-440 [card=140], PCI subsystem ID is 0070:ff07 bttv0: using: Osprey 440 [card=140,insmod option] bttv0: gpio config override: mask=0x20303, mux=0xfffdfc,0xfffdfc,0xfffdfc,0xfffdfc bttv0: gpio: en=00000000, out=00000000 in=00feffff [pre-init] bttv0: risc main @ 37f25000 bttv0: gpio: en=00000000, out=00000000 in=00feffff [init] bttv0: BT878A ARESET bttv0: tveeprom i2c attach [addr=0x50,client=tveeprom] bttv0: using tuner=-1 bttv0: i2c: checking for TDA9887 @ 0x86... not found bttv0: registered device video0 bttv0: registered device vbi0 bttv0: gpio: en=00020303, out=00000000 in=00fcfcfc [audio: mute] bttv0: video mux: input=0 mux=2 bttv0: gpio: en=00020303, out=00000000 in=00fcfcfc [audio: mute] bttv0: PLL: 28636363 => 35468950 .<7>bttv0: gpio: en=00020303, out=00000000 in=00fcfcfc [audio: mute] ok So the issue now is that the audio is WAY to high so it is very distorted. The audio is controlled via X9221A chips on the i2c bus at 0x50, there are not drivers for X9221 so I can't lower the audio levels. Anyone able to help me with this last part??? ><> Nathan Stratton CTO, Voila IP Communications nathan at robotics.net nathan at voilaip.com http://www.robotics.net http://www.voilaip.com

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[alsa-devel] Driver for Creamware / SonicCore Pulsar, which information needed?
by Kaspar Schleiser 22 Jun '07

22 Jun '07

Hey, I've got a Creamware Pulsar DSP card. As it actually has NO support for linux, I asked the vendor whether support was planned or if I could get necessary technical information. they answered they'd not have concrete plans on supporting linux and what information I'd need for the development of a driver. As I never wrote a driver, I don't know that, so maybe you could help me giving a useful answer ... What do we need to write a driver? Would anyone be interested in writing a driver? I could lend my card. It's a high quality multichannel card with 3 DSP chips on it. Cheers Kaspar

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