[PATCH] ALSA: HDA: Set position fix to LPIB for an Atom/Poulsbo based device

[PATCH] ALSA: HDA: Set position fix to LPIB for an Atom/Poulsbo based device

[David Henningsson]

For the Asus 1101HA, reporting position by reading the DMA position
buffer map seems unstable and often wrong. The reporter says that
position_fix=LPIB works much better (although not 100%, but this is
probably due to other issues).

The controller chip is an Intel Poulsbo 8086:811b (rev 07) controller,
and complete alsa-info is available here:
https://launchpadlibrarian.net/86691768/alsa-info.txt.1TNwyE5Ea7

Cc: stable@kernel.org (3.0+)
BugLink: http://bugs.launchpad.net/bugs/825709
Tested-by: Stefano Lodi
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
---
 sound/pci/hda/hda_intel.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index d1582dd..0746ab4 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2506,6 +2506,7 @@ static struct snd_pci_quirk position_fix_list[] __devinitdata = {
 	SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
+	SND_PCI_QUIRK(0x1043, 0x83ce, "ASUS 1101HA", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
 	SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
-- 
1.7.5.4

Re: [PATCH] ALSA: HDA: Set position fix to LPIB for an Atom/Poulsbo based device

[Takashi Iwai]

At Mon, 12 Dec 2011 14:01:17 +0800,
David Henningsson wrote:
> 
> For the Asus 1101HA, reporting position by reading the DMA position
> buffer map seems unstable and often wrong. The reporter says that
> position_fix=LPIB works much better (although not 100%, but this is
> probably due to other issues).
> 
> The controller chip is an Intel Poulsbo 8086:811b (rev 07) controller,
> and complete alsa-info is available here:
> https://launchpadlibrarian.net/86691768/alsa-info.txt.1TNwyE5Ea7
> 
> Cc: stable@kernel.org (3.0+)
> BugLink: http://bugs.launchpad.net/bugs/825709
> Tested-by: Stefano Lodi
> Signed-off-by: David Henningsson <david.henningsson@canonical.com>

Applied now.  Thanks.


Takashi


> ---
>  sound/pci/hda/hda_intel.c |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> 
> diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
> index d1582dd..0746ab4 100644
> --- a/sound/pci/hda/hda_intel.c
> +++ b/sound/pci/hda/hda_intel.c
> @@ -2506,6 +2506,7 @@ static struct snd_pci_quirk position_fix_list[] __devinitdata = {
>  	SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
>  	SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
>  	SND_PCI_QUIRK(0x1043, 0x81e7, "ASUS M2V", POS_FIX_LPIB),
> +	SND_PCI_QUIRK(0x1043, 0x83ce, "ASUS 1101HA", POS_FIX_LPIB),
>  	SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
>  	SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
>  	SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
> -- 
> 1.7.5.4
>