linux-kernel - Re: BUG - HDA Intel very low audio with breaking voice in 2.6.28-rc8

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Date:	Sun, 14 Dec 2008 17:00:52 +0530
From:	"Jaswinder Singh" <jaswinderlinux@...il.com>
To:	"Takashi Iwai" <tiwai@...e.de>
Cc:	linux-kernel@...r.kernel.org, matt.jared@...el.com,
	andy.kopp@...el.com, dan.d.kogan@...el.com, pshou@...ltek.com.tw
Subject: Re: BUG - HDA Intel very low audio with breaking voice in 2.6.28-rc8

Hello Takashi,

On Sun, Dec 14, 2008 at 2:56 PM, Takashi Iwai <tiwai@...e.de> wrote:
>>
>> I am facing problem in 2.6.28-rc8, HDA Intel audio is very low and
>> with breaking voice, may be it seems like HD effect ;)
>
> What do you mean "breaking voice"?  Please be more specific.
>

1. It seems like few frames are dropping and it gives like crackling sound.
2. Audio volume is very low, I can only hear it if I increase the volume > 85%

> Run alsa-info.sh with --no-upload option, and attach the generated
> file.  This will contain the detailed hardware information.  The
> script is found at
>    http://www.alsa-project.org/alsa-info.sh
>

I am attaching output file by using sound git kernel.

> Is this a regression from the older kernel?

I have no idea, I have checked many trees and versions but all are
giving same problem.

> If yes, please run
> alsa-info on both working and non-working kernels and attach the both
> outputs.

http://www.alsa-project.org/db/?f=ef63766d74e6a7aa7fe246b62dafa2711aae109a
by using sound git kernel.

>    git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git
>
> Also, try the latest sound git tree whether the problem persists on
> the latest version.
>

sound-2.6 git is also giving same problem, its dmesg is :

[    3.927195] Advanced Linux Sound Architecture Driver Version 1.0.18a.
[    3.929171] HDA Intel 0000:00:14.2: PCI INT A -> GSI 16 (level,
low) -> IRQ 16
[    3.929698] HDA Intel 0000:00:14.2: setting latency timer to 64
[    3.936487] input: AT Translated Set 2 keyboard as
/devices/platform/i8042/serio0/input/input5
[    3.941096] usb 1-3: new high speed USB device using ehci_hcd and address 2
[    3.994132] ehci_hcd 0000:00:12.2: port 3 high speed
[    3.994148] ehci_hcd 0000:00:12.2: GetStatus port 3 status 001005
POWER sig=se0 PE CONNECT
[    3.994816] input: HDA ATI SB at 0xd2400000 irq 16 Line In at Ext
Rear Jack as /devices/pci0000:00/0000:00:14.2/input/input6
[    3.997629] input: HDA ATI SB at 0xd2400000 irq 16 Mic at Ext Front
Jack as /devices/pci0000:00/0000:00:14.2/input/input7
[    4.000630] input: HDA ATI SB at 0xd2400000 irq 16 Line In at Ext
Rear Jack as /devices/pci0000:00/0000:00:14.2/input/input8
[    4.003629] input: HDA ATI SB at 0xd2400000 irq 16 HP Out at Ext
Front Jack as /devices/pci0000:00/0000:00:14.2/input/input9
[    4.009588] HDA Intel 0000:01:05.1: PCI INT B -> GSI 19 (level,
low) -> IRQ 19
[    4.009588] HDA Intel 0000:01:05.1: setting latency timer to 64
[    4.035961] ALSA device list:
[    4.036079]   #0: HDA ATI SB at 0xd2400000 irq 16
[    4.036335]   #1: HDA ATI HDMI at 0xd2310000 irq 19
..
[   47.642943] hda-intel: Invalid position buffer, using LPIB read
method instead.
..
[  113.786524] hda_intel: azx_get_response timeout, switching to
polling mode: last cmd=0x021f000a
..
[  114.787522] hda_intel: azx_get_response timeout, switching to
single_cmd mode: last cmd=0x021f000a

Thank you,

Jaswinder Singh.

View attachment "alsa-info.txt" of type "text/plain" (10030 bytes)