From patchwork Fri Jan 13 11:42:14 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: (precise pre-stable) [PATCH] ALSA: HDA: Use LPIB position fix for Macbook Pro 7, 1 Date: Fri, 13 Jan 2012 01:42:14 -0000 From: David Henningsson X-Patchwork-Id: 135803 Message-Id: <1326454935-30817-1-git-send-email-david.henningsson@canonical.com> To: kernel-team@lists.ubuntu.com Cc: 909419@bugs.launchpad.net Several users have reported "choppy" audio under the 3.2 kernel, and that changing position_fix to 1 has resolved their problem. The chip is an nVidia Corporation MCP89 High Definition Audio, [10de:0d94] (rev a2). Cc: stable@kernel.org (v3.2+) BugLink: https://bugs.launchpad.net/bugs/909419 Signed-off-by: David Henningsson Signed-off-by: Takashi Iwai (cherry picked from commit b01de4fb40137fbda7530550ff0cd37171dafb0c, git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git) Acked-by: Andy Whitcroft --- * Several macbooks (with the same ID, see duplicates to bug 909419) seem to be hitting this one, so it might be worth picking it for our next upload, instead of waiting for stable. 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 c2f79e6..5b2b75b 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2509,6 +2509,7 @@ static struct snd_pci_quirk position_fix_list[] __devinitdata = { 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(0x10de, 0xcb89, "Macbook Pro 7,1", POS_FIX_LPIB), SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB), SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB), SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),