At 08/01/2013 17:48, Takashi Iwai wrote:
> 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 <[email protected]>
> 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 <[email protected]>
> Reported-by: Maurizio Avogadro <[email protected]>
> Cc: <[email protected]> [v3.7]
> Signed-off-by: Takashi Iwai <[email protected]>
> ---
> 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 },
Hi Takashi
with your patch the hda_intel driver seems to work perfectly until now
with no additional parameters; lspci -v output about the sound card
follows (please ask if you need the full output; PCI ID is 8086:1c20):
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset
Family High Definition Audio Controller (rev 05)
Subsystem: CLEVO/KAPOK Computer Device 1500
Flags: bus master, fast devsel, latency 0, IRQ 55
Memory at f7400000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [130] Root Complex Link
Kernel driver in use: snd_hda_intel
thanks a lot for your great work
Maurizio
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