Comment 20 for bug 1487168

I believe I have discovered the cause of the problem.
Your prompting me to look at the Open Issues for VirtualBox pointed out
that I was on V5.0.0 and when I went to the Downloads Page, V5.0.2 was
currently available.
VirtualBox will send a push notification when the team indicates and
important release is available and is displayed when you start VirtualBox.
Although 5.0.2 is generally available, they did not mark it for Push
Notification.

I upgraded to 5.0.2 and also followed through with a process called Install
Guest Additions, that led to more serious errors.
The Guest Additions Scripting installs custom support for a variety of
system dependent things including advanced Video capabilities like Screen
resizing.
I had noticed this issue before but was not zoned in on it because it is a
critical failure for the new KDE Distro and not with the other Desktops.

I decided to backoff to VBox V4.33 which is the latest release for V4 of
VirtualBox.

Spot checking all of the 15.10 Distros having this audio problem, just
getting into alsamixer and adjusting the Volume Slider, they seem to work
correctly with VBox V4.33.

The VirtualBox Team had a V5.0.3 release that hasn't been finalized but is
available for users to manually install. I have not tried that release to
see if the Audio issues are resolved.

I need to turn my attention to reporting both this Audio Issue and the
Video issue to the respective Virtual Box teams.

I believe you can mark this issues as Closed.

Thanks for all of the help in getting this issue sorted out.

On Fri, Aug 21, 2015 at 7:00 AM, Raymond <email address hidden> wrote:

>
> https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/commit/sound/pci/intel8x0.c?id=4235a31784f59c9be5ff71534743c055091f9735
>
> the real ac97 controller 8086:2415 does not support 6 channels
>
> --
> 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 alsa-driver package in Ubuntu:
> Incomplete
>
> 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/ubuntu/+source/alsa-driver/+bug/1487168/+subscriptions
>