My interpretation of this update is that I believe you are trying to
suggest that I apply this patch to correct a scaling problem with HDA,
Is that what you are trying to communicate?

Also, I understand that this code is or maybe broken but why are we working
on Intel HDA when the default ICH AC97 seems to have the problem. I would
rather work on getting the defaulted Driver correct.

On Sat, Sep 5, 2015 at 10:07 AM, Raymond <email address hidden> wrote:

>
> https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/hda/patch_sigmatel.c?id=7c7767ebe2fa847c91a0dd5551ca422aba359473
>
>
> ALSA: hda - Halve too large volume scales for STAC/IDT codecs
> STAC/IDT codecs have often too large volume scales such as -96dB,
> and exposing this as is results in too large scale in percentage
> representation.
>
> This patch adds the check of the volume scale and halves the
> volume range if it's too large automatically.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1487168
>
> Title:
>   [Emulated AD1980 AC97 inside Virualbox 5.0, playback] volume slider
>   problem
>
> Status in Virtualbox:
>   New
> Status in alsa-driver package in Ubuntu:
>   Incomplete
> Status in virtualbox package in Ubuntu:
>   Confirmed
>
> Bug description:
>   Volume Slider is only controlling PCM channel and is not controlling
>   Master. In effect, Master is restricting the audio level to the
>   default of approximately 45 Percent. In order to raise the Master
>   Volume Level, alsamixer is capable of changing Master. Without
>   manually raising Master to Max Volume, Volume Slider can only control
>   volume from 0-45% which is the default level of Master.
>
>   Description:  Ubuntu Wily Werewolf (development branch)
>   Release:      15.10
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 15.10
>   Package: alsa-base 1.0.25+dfsg-0ubuntu5
>   ProcVersionSignature: Ubuntu 4.1.0-3.3-generic 4.1.3
>   Uname: Linux 4.1.0-3-generic x86_64
>   ApportVersion: 2.18-0ubuntu7
>   Architecture: amd64
>   AudioDevicesInUse:
>    USER        PID ACCESS COMMAND
>    /dev/snd/controlC0:  gene       1330 F.... pulseaudio
>                         gene       1922 F.... alsamixer
>   CurrentDesktop: Unity
>   Date: Thu Aug 20 13:00:57 2015
>   InstallationDate: Installed on 2015-08-19 (1 days ago)
>   InstallationMedia: Edubuntu 15.10 "Wily Werewolf" - Alpha amd64
> (20150819)
>   PackageArchitecture: all
>   SourcePackage: alsa-driver
>   Symptom: audio
>   Symptom_Card: Built-in Audio - Intel 82801AA-ICH
>   Symptom_Type: Volume slider, or mixer problems
>   Title: [ICH - Intel 82801AA-ICH, playback] volume slider problem
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 12/01/2006
>   dmi.bios.vendor: innotek GmbH
>   dmi.bios.version: VirtualBox
>   dmi.board.name: VirtualBox
>   dmi.board.vendor: Oracle Corporation
>   dmi.board.version: 1.2
>   dmi.chassis.type: 1
>   dmi.chassis.vendor: Oracle Corporation
>   dmi.modalias:
> dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr:
>   dmi.product.name: VirtualBox
>   dmi.product.version: 1.2
>   dmi.sys.vendor: innotek GmbH
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/virtualbox/+bug/1487168/+subscriptions
>