[alsa-devel] Bug on Dell Vostro 5480 (Intel Wildcat) kernel driver

[Takashi Iwai]

On Wed, 29 Jul 2015 00:32:08 +0200,
Paulo Roberto de Oliveira Castro wrote:
> 
> I'm not an expert on applying patches to the kernel (never did that
> before), therefore, I don't know if I did everything right.
> 
> What I did was: downloaded 4.2-rc4 from kernel.org[1], added the line by
> hand (couldn't apply the patch using patch), copied the config file from
> /boot/ (the config fedora 22 uses for its kernel) to .config on the root of
> the kernel directory, runned "make oldconfig" (typing ENTER for every
> question, is that right?), "make", "make modules_install", "make install".
> Rebooted, and chose the new kernel I just installed.
> 
> The sound worked like a charm, the speakers worked as expected, and the
> volume was as loud as on Windows.

Good to hear, I queued the fix now.

> Is the patch going to be applied on master? Any chance that fix reaches my
> Fedora 22 (with backport to older kernel versions)?

The commit is with Cc to stable, so it'll be backported to stable
kernels once when landed to upstream.  Then Fedora will pick it up
eventually later.


thanks,

Takashi

> 
> Thanks for the help,
> 
> Paulo
> 
> [1]
> https://www.kernel.org/pub/linux/kernel/v4.x/testing/linux-4.2-rc4.tar.xz
> 
> 2015-07-28 10:49 GMT-03:00 Paulo Roberto de Oliveira Castro <
> p.oliveira.castro at gmail.com>:
> 
> >
> >
> > ---------- Forwarded message ---------
> > From: Takashi Iwai <tiwai at suse.de>
> > Date: Tue, Jul 28, 2015, 03:35
> > Subject: Re: [alsa-devel] Bug on Dell Vostro 5480 (Intel Wildcat) kernel
> > driver
> > To: Paulo Roberto de Oliveira Castro <p.oliveira.castro at gmail.com>
> > Cc: <alsa-devel at alsa-project.org>
> >
> >
> > On Tue, 28 Jul 2015 05:35:34 +0200,
> > Paulo Roberto de Oliveira Castro wrote:
> > >
> > > Hi everyone,
> > >
> > > After installing Fedora 22 on my Dell Vostro 5480, the speakers don't
> > work,
> > > and the sound only comes out of the subwoofer. Here is the output of
> > > alsa-info.sh. After talking to "debianuser" on IRC, we found this
> > > workaround:
> > >
> > > sudo hda-verb /dev/snd/hwC1D0 0x14 SET_PIN_WIDGET_CONTROL 0x40 # enable,
> > > set it to OUT
> > > sudo hda-verb /dev/snd/hwC1D0 0x14 SET_CONNECT_SEL 0 # switch to 0x0c
> > > sudo hda-verb /dev/snd/hwC1D0 0x14 SET_AMP_GAIN_MUTE 0xa000 # unmute left
> > > sudo hda-verb /dev/snd/hwC1D0 0x14 SET_AMP_GAIN_MUTE 0x9000 # unmute
> > right
> > >
> > > We suspect that it's a kernel driver bug. This makes the speakers work
> > > alongside the headphones (both at the same time) but I need help making
> > it
> > > working when headphones are not plugged in.
> >
> > Does the patch below work?  Try with 4.2-rc kernel at best.
> >
> >
> > Takashi
> >
> > ---
> > diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
> > index 4ae877c3b6a1..18ae17ebb356 100644
> > --- a/sound/pci/hda/patch_realtek.c
> > +++ b/sound/pci/hda/patch_realtek.c
> > @@ -5185,6 +5185,7 @@ static const struct snd_pci_quirk alc269_fixup_tbl[]
> > = {
> >         SND_PCI_QUIRK(0x1028, 0x064a, "Dell",
> > ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
> >         SND_PCI_QUIRK(0x1028, 0x064b, "Dell",
> > ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
> >         SND_PCI_QUIRK(0x1028, 0x0665, "Dell XPS 13",
> > ALC288_FIXUP_DELL_XPS_13),
> > +       SND_PCI_QUIRK(0x1028, 0x069a, "Dell Vostro 5480",
> > ALC290_FIXUP_SUBWOOFER_HSJACK),
> >         SND_PCI_QUIRK(0x1028, 0x06c7, "Dell",
> > ALC255_FIXUP_DELL1_MIC_NO_PRESENCE),
> >         SND_PCI_QUIRK(0x1028, 0x06d9, "Dell",
> > ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
> >         SND_PCI_QUIRK(0x1028, 0x06da, "Dell",
> > ALC293_FIXUP_DELL1_MIC_NO_PRESENCE),
> >
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