Surround 2.1 is one of the more common surround profiles these days,
so it's about time we support it.
The "surround21" was added to alsa-lib a few months ago, and there
hasn't yet been an alsa-lib release since, but I doubt it will change.
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
On Haswell hardware, there are multiple HDMI outputs capable of
digital sound output. As they were identically named, KDE's control
center was unable to distinguish them, restored the wrong profile and
thus routed sound to the wrong HDMI monitor.
Also, having identically-named menu items in other mixer applications
looks like a bug.
If there is a "Line Out" jack present, then add this path. The fallback
analog-output will be a subset of this path and removed.
I only use the "Line Out Jack" or "Line Out Front Jack" for actual jack
detection - without anything connected to the front jack, it makes little
sense to enable the port.
(Another option could perhaps be to use different paths for stereo line out
and surround line outs, but that could be a possible future improvement.)
As far as I can see, having a mono path in a stereo mapping doesn't
make any sense. It also causes breakage: if the Master Mono mixer
element has two volume channels, the analog-output path gets removed
due to being a subset of analog-output-mono, and that in turn causes
the Master element getting muted. Users generally don't like that.
BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=54673
Upstreamed from Debian: "Although in principle Ac '97 hardware has a
separate mono LFE pin nothing seems to use it. To make matters worse
it does confuse PulseAudio's port selection slightly which causes
audio in virtualbox not to work out of the box."
Credit: Sjoerd Simons <sjoerd@debian.org>
Credit: Martin-Éric Racine <martin-eric.racine@iki.fi>
BugLink: https://bugs.launchpad.net/bugs/1016969
BugLink: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=673847
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Some ASUS netbooks, such as the 1015 CX, have only one 3.5 mm jack,
but it can be used either as a headphone or as a mic (but not both
simultaneously).
This patch adds support for the "Headphone Mic" path that is used
on these devices, so that we can use the jack as an external mic, and
doing so without muting the speaker.
BugLink: https://bugs.launchpad.net/bugs/1018262
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
For Nvidia and Intel, support probing of up to four HDMI devices.
Also add port information to all HDMI profiles.
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
