At Sun, 06 Jan 2013 04:29:57 +0100,
Mau wrote:
>
> Hello,
>
> I'm running current Debian testing (Wheezy), KDE with pulseaudio, with
> the latest Liquorix kernel (3.7.0-1.dmz.6-liquorix-amd64) on a Clevo
> W150HRM laptop (Realtek ALC269VB codec).
>
> As soon as I unplug ac, the hda_intel power saving features get turned
> on by the /usr/lib/pm-utils/power.d/intel-audio-powersave script
> supplied by the pm-tools package, which echoes "1" to
> /sys/module/snd_hda_intel/parameters/power_save; after that, and until I
> disable hda_intel power savings, all the sounds I get are prolonged and
> interrupted by pauses of silence. I'm quite sure that this issue wasn't
> present before 3.7 kernel.
>
> Either disabling MSIs or disabling controller power savings seem to fix
> the issue (I'm currently running with enable_msi=0).
>
> Any idea?
Which HD-audio controller do you have? Give lspci -v output.
If it's a Cougar Point or Panther Point, it's likely the regression in
3.7 kernel due to the runtime D3 support. The patch below should fix
that problem.
Takashi
---
From: Takashi Iwai <tiwai@xxxxxxx>
Subject: [PATCH] ALSA: hda - Disable runtime D3 for Intel CPT & co
We've got a few bug reports that the runtime D3 results in the dead
HD-audio controller. It seems that the problem is in a deeper level
than the sound driver itself, so as a temporal solution, disable the
feature for these controllers again.
Reported-by: Vincent Blut <vincent.debian@xxxxxxx>
Reported-by: Maurizio Avogadro <mavoga@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> [v3.7]
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
sound/pci/hda/hda_intel.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index cca8727..0b6aeba 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -573,9 +573,12 @@ enum {
#define AZX_DCAPS_PM_RUNTIME (1 << 26) /* runtime PM support */
/* quirks for Intel PCH */
-#define AZX_DCAPS_INTEL_PCH \
+#define AZX_DCAPS_INTEL_PCH_NOPM \
(AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_BUFSIZE | \
- AZX_DCAPS_COUNT_LPIB_DELAY | AZX_DCAPS_PM_RUNTIME)
+ AZX_DCAPS_COUNT_LPIB_DELAY)
+
+#define AZX_DCAPS_INTEL_PCH \
+ (AZX_DCAPS_INTEL_PCH_NOPM | AZX_DCAPS_PM_RUNTIME)
/* quirks for ATI SB / AMD Hudson */
#define AZX_DCAPS_PRESET_ATI_SB \
@@ -3586,13 +3589,13 @@ static void azx_remove(struct pci_dev *pci)
static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
/* CPT */
{ PCI_DEVICE(0x8086, 0x1c20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
/* PBG */
{ PCI_DEVICE(0x8086, 0x1d20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
/* Panther Point */
{ PCI_DEVICE(0x8086, 0x1e20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH_NOPM },
/* Lynx Point */
{ PCI_DEVICE(0x8086, 0x8c20),
.driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
--
1.8.0.1
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