[alsa-devel] No sound for HP Pavilion DV4z

[Takashi Iwai]

At Thu, 5 Feb 2009 23:45:25 +0000 (UTC),
aeleneski at comcast.net wrote:
> 
> Ok, seems like I have no luck. Here were some general tests that I did and the
> dmesg results:
> 
> alias snd-card-0 snd-hda-intel
> alias sound-slot-0 snd-hda-intel
> options snd-hda-intel model=hp-dv5
> 
> [   94.194443] hda-intel: Invalid position buffer, using LPIB read method
> [  265.860938] HDA Intel 0000:01:05.1: PCI INT B disabled
> [  265.968343] HDA Intel 0000:00:14.2: PCI INT A disabled
> [  266.908393] HDA Intel 0000:00:14.2: PCI INT A -> GSI 16 (level, low) -> IRQ
> 16
> [  266.944615] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:14.2/
> input/input14
> [  267.037347] input: HDA ATI SB at 0xd2500000 irq 16 Mic at Ext Front Jack as
> /devices/pci0000:00/0000:00:14.2/input/input15
> [  267.064233] input: HDA ATI SB at 0xd2500000 irq 16 HP Out at Ext Front Jack
> as /devices/pci0000:00/0000:00:14.2/input/input16
> [  267.080415] HDA Intel 0000:01:05.1: PCI INT B -> GSI 19 (level, low) -> IRQ
> 19
> [  267.080445] HDA Intel 0000:01:05.1: setting latency timer to 64
> [  315.093428] hda-intel: Invalid position buffer, using LPIB read method
> instead.

This isn't too bad, but...

> options snd-hda-intel model=hp-dv5 enable_msi=1
> 
> [  514.468839] APIC error on CPU1: 00(08)
> [  514.468851] APIC error on CPU0: 00(08)
> [  515.472557] ALSA /usr/src/Alsa-1.0.19/alsa-driver-1.0.19/pci/hda/
> hda_intel.c:621: hda_intel: No response from codec, disabling MSI: last cmd=
> 0x000f0000
> [  516.476554] ALSA /usr/src/Alsa-1.0.19/alsa-driver-1.0.19/pci/hda/
> hda_intel.c:634: hda_intel: azx_get_response timeout, switching to polling
> mode: last cmd=0x000f0000

This seems more serious.

> options snd-hda-intel model=hp-dv5 probe_mask=1
> 
> [  512.740875] HDA Intel 0000:01:05.1: PCI INT B disabled
> [  512.853833] HDA Intel 0000:00:14.2: PCI INT A disabled
> [  514.077692] HDA Intel 0000:00:14.2: PCI INT A -> GSI 16 (level, low) -> IRQ
> 16
> [  514.150312] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:14.2/
> input/input17
> [  514.412696] input: HDA ATI SB at 0xd2500000 irq 16 Mic at Ext Front Jack as
> /devices/pci0000:00/0000:00:14.2/input/input18
> [  514.433025] input: HDA ATI SB at 0xd2500000 irq 16 HP Out at Ext Front Jack
> as /devices/pci0000:00/0000:00:14.2/input/input19
> [  514.454995] HDA Intel 0000:01:05.1: PCI INT B -> GSI 19 (level, low) -> IRQ
> 19
> [  514.455153] HDA Intel 0000:01:05.1: setting latency timer to 64

And this is better.
So, obviously the problem looks like the communication with the
secondary codec.

> Now something weird is that when I initially changed to just model=hp-dv5, the
> mute light on my laptop
> went from orange to white. But no sound played. Then after the above tests
> failed, I started to try different models again (such as auto, laptop) and
> now that light is orange. So I changed back to just model=hp-dv5, and the
> light is still orange.
> 
> Any other suggestions?

OK, first try to load the module with probe_only=1 option.
Reboot once after setting this model to restore the original BIOS
setup.  Then run alsa-info.sh --no-upload, and attach the generated
file.  If you get errors, try to get /proc/asound/card0/codec#* files,
at least.

Then set model=hp-dv5, reboot and get alsa-info output, too.

Also, make sure to use the very latest alsa-driver snapshot,
    ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-snapshot.tar.gz
Check the changelogs in alsa-driver*/HEAD and alsa-driver*/alsa-kernel/HEAD
files.

The problem could be the invalid BIOS pin setup.
In that case, you can try to change the pin control manually via
hda-verb program, such as,

	hda-verb /dev/snd/hwC0D0 0x0d SET_PIN_WID 0x40

See Documentation/sound/alsa/HD-Audio.txt in the recent kernel
(found in alsa-driver snapshot, too).


thanks,

Takashi